This document presents research on the flexural behavior of reinforced concrete (RCC) beams with partial replacement of natural river sand with manufactured sand (M-sand) as fine aggregate. Three RCC beam sections were tested: under-reinforced, balanced, and over-reinforced. Beams were cast with 0%, 25%, 50%, and 75% replacement of natural sand with M-sand. Compressive strength cubes were also cast to determine the maximum replacement level. The beams were tested under two-point loading to examine their flexural behavior, load carrying capacity, cracking patterns, and deflection. The results were compared to analyze the behavior and performance of beams made with M-sand versus natural sand. The objective was
Analysis the Effect of Steel Fibre and Marble Dust with Strength of Pavement ...ijtsrd
The thrust nowadays is to produce thinner and green pavement sections of better quality, which can carry the heavy loads. The high strength steel fibre reinforced concrete is a concrete having compressive strength greater than 40MPa, made of hydraulic cements and containing fine and coarse aggregates; and discontinuous, unconnected, randomly distributed steel fibres. The present study aims at, developing pavement quality concrete mixtures incorporating marble dust as partial replacement of cement as well as steel fibres. The aim is to the design of slab thickness of PQC pavement using the achieved flexural strength of the concrete mixtures. In this study, the flexural, compressive and split tensile strength for pavement quality concrete mixtures for different percentage of steel fibres and replacement of cement with marble dust are reported. It is found out the maximum increase in flexure strength, compressive strength and split tensile strength is for 0% Marble Dust and 1% Steel fibre. Also it has been possible to achieve savings in cement by replacing it with marble dust and adding fibres. This study also shows that in view of the high flexural strength, high values of compressive strength and high values of split tensile strength, higher load carrying capacity and higher life expectancy, the combination of 10 to 20% marble dust replacement along with addition of 0.5 to 1% steel fibres is ideal for design of Pavement Quality Concrete (PQC). Krishan Kumar | Sumesh Jain"Analysis the Effect of Steel Fibre and Marble Dust with Strength of Pavement Quality Concrete" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017, URL: http://www.ijtsrd.com/papers/ijtsrd152.pdf http://www.ijtsrd.com/engineering/civil-engineering/152/analysis-the-effect-of-steel-fibre-and-marble-dust-with-strength-of-pavement-quality-concrete/krishan-kumar
A Review Paper on Permeable Concrete as a Road PavementIRJET Journal
This document reviews permeable concrete as a road pavement material. It summarizes several studies that have examined the properties and effectiveness of permeable concrete. Permeable concrete allows water to drain through it, reducing runoff. It has been found to have sufficient strength for low traffic areas but lacks the high strength required for heavily trafficked roads. The document outlines the composition and properties of permeable concrete, including its lower density and strength compared to conventional concrete due to higher porosity. Several studies are reviewed that examined the compressive strength, tensile strength, and effects of curing methods on permeable concrete. The objectives and future scope of additional research on permeable concrete's durability and impact resistance are also discussed.
This document discusses a study on the effect of using Sudanese aggregates and supplementary cementitious materials like silica fume and fly ash to produce high strength concrete. Hundreds of concrete specimens with different mixtures of local materials, silica fume, fly ash, and water-cement ratios were tested to determine compressive strength and workability. The results showed that local Sudanese materials can be used to successfully produce concrete with a compressive strength of 80 MPa when combined with supplementary cementitious materials. Water-cement ratio had an inverse relationship with compressive strength. Silica fume improved short and long-term concrete properties while fly ash inversely affected 28-day strength. The study aims to provide insights for producing
Review Use of Demolished Concrete in Pavement Constructionijtsrd
Recycled aggregates consist of crushed, graded inorganic particles processed from the material that have been used in the constructions and demolition debris. The target of the present thesis work is to determine the strength characteristic of recycled aggregates for the application in concrete pavement construction. The scope of the thesis is to determine and compare the compressive strength, flexural strength and sulphate resistance of concrete by using different percentages of recycled aggregates. The investigation was carried out by using workability test, compressive strength test, flexural strength test and sulphate resistance test. A total of five mixes with replacement of coarse aggregates with 0%, 10%, 20%, 30% and 40% recycled coarse aggregates were studied. The water cement ratio was kept constant at 0.38. It was observed that workability of concrete was decreased with the increase in recycled aggregates in concrete. For the strength characteristics, the results showed that the strengths of recycled aggregate concrete was comparable to the strengths of natural aggregates concrete. Munesh Kumar | Sumesh Jain"Review Use of Demolished Concrete in Pavement Construction" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017, URL: http://www.ijtsrd.com/papers/ijtsrd2368.pdf http://www.ijtsrd.com/engineering/civil-engineering/2368/review-use-of-demolished-concrete-in-pavement-construction/munesh-kumar
IRJET- Study of Self Compacting Concrete - A ReviewIRJET Journal
The document reviews research on self-compacting concrete, which can be placed and compacted under its own weight without vibration. It summarizes various studies that have investigated the fresh and mechanical properties of self-compacting concrete made with different admixtures like fly ash and slag, finding that these can provide satisfactory strength when used to partially replace cement. The review also examines the effects of factors like water-cement ratio, paste content, and viscosity modifiers on the workability and durability of self-compacting concrete.
A Study on self-Compacting Concrete Using Portland Slag Cement with Partial R...IJERA Editor
Concrete plays a vital role as a construction material in the world. In the present scenario, waste materials from various industries are added to the mix. Over 400 million tons of waste materials are being produced by various industries every year. Foundries successfully recycle and reuse the sand many times in a foundry. When the sand can no longer be reused in the foundry, it is removed from the foundry and is termed as Foundry sand. Foundry sand production is nearly 6 to 10 million tons annually. There is a possibility of substituting natural fine aggregate with waste foundry sand which offers technical, economic and environmental advantages which are of great use in the construction sector. The construction industry is now slowly becoming aware of the environmental issues and other sustainable development issues for cement and concrete industries. It is looking for the ways and means to develop building products, which will increase the life span and quality. This thesis presents an experimental investigation on strength aspects like compressive, split tensile and flexural strength of Self Compacting Concrete (SSC) containing an industrial waste foundry sand. It is used as fine aggregate in varying proportions, replacing the fine aggregate with foundry sand as percentages of 0%, 25%, 50%, 75%, 100%. For this green SCC, all SCC tests are performed as per EFNARC guidelines i.e. slump flow, L-box, V funnel and T50 tests are carried out.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
IRJET- A Review on “Partial Replacement of Cement and Fine Aggregate by Al...IRJET Journal
This document reviews research on using copper slag and artificial aggregate as partial replacements for cement and fine aggregate in concrete. It summarizes several studies that found:
1) Replacing 20% of cement and fine aggregate with copper slag and ceramic powder increased compressive strength by around 36%.
2) Replacing 40% of fine aggregate with copper slag increased compressive strength by 17.5% while maintaining workability.
3) Using 20% copper slag as a partial cement replacement achieved a compressive strength of 85% of a reference mix without copper slag.
4) Compressive strength increased up to a 80% replacement of fine aggregate with copper slag and ferrous slag.
Analysis the Effect of Steel Fibre and Marble Dust with Strength of Pavement ...ijtsrd
The thrust nowadays is to produce thinner and green pavement sections of better quality, which can carry the heavy loads. The high strength steel fibre reinforced concrete is a concrete having compressive strength greater than 40MPa, made of hydraulic cements and containing fine and coarse aggregates; and discontinuous, unconnected, randomly distributed steel fibres. The present study aims at, developing pavement quality concrete mixtures incorporating marble dust as partial replacement of cement as well as steel fibres. The aim is to the design of slab thickness of PQC pavement using the achieved flexural strength of the concrete mixtures. In this study, the flexural, compressive and split tensile strength for pavement quality concrete mixtures for different percentage of steel fibres and replacement of cement with marble dust are reported. It is found out the maximum increase in flexure strength, compressive strength and split tensile strength is for 0% Marble Dust and 1% Steel fibre. Also it has been possible to achieve savings in cement by replacing it with marble dust and adding fibres. This study also shows that in view of the high flexural strength, high values of compressive strength and high values of split tensile strength, higher load carrying capacity and higher life expectancy, the combination of 10 to 20% marble dust replacement along with addition of 0.5 to 1% steel fibres is ideal for design of Pavement Quality Concrete (PQC). Krishan Kumar | Sumesh Jain"Analysis the Effect of Steel Fibre and Marble Dust with Strength of Pavement Quality Concrete" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017, URL: http://www.ijtsrd.com/papers/ijtsrd152.pdf http://www.ijtsrd.com/engineering/civil-engineering/152/analysis-the-effect-of-steel-fibre-and-marble-dust-with-strength-of-pavement-quality-concrete/krishan-kumar
A Review Paper on Permeable Concrete as a Road PavementIRJET Journal
This document reviews permeable concrete as a road pavement material. It summarizes several studies that have examined the properties and effectiveness of permeable concrete. Permeable concrete allows water to drain through it, reducing runoff. It has been found to have sufficient strength for low traffic areas but lacks the high strength required for heavily trafficked roads. The document outlines the composition and properties of permeable concrete, including its lower density and strength compared to conventional concrete due to higher porosity. Several studies are reviewed that examined the compressive strength, tensile strength, and effects of curing methods on permeable concrete. The objectives and future scope of additional research on permeable concrete's durability and impact resistance are also discussed.
This document discusses a study on the effect of using Sudanese aggregates and supplementary cementitious materials like silica fume and fly ash to produce high strength concrete. Hundreds of concrete specimens with different mixtures of local materials, silica fume, fly ash, and water-cement ratios were tested to determine compressive strength and workability. The results showed that local Sudanese materials can be used to successfully produce concrete with a compressive strength of 80 MPa when combined with supplementary cementitious materials. Water-cement ratio had an inverse relationship with compressive strength. Silica fume improved short and long-term concrete properties while fly ash inversely affected 28-day strength. The study aims to provide insights for producing
Review Use of Demolished Concrete in Pavement Constructionijtsrd
Recycled aggregates consist of crushed, graded inorganic particles processed from the material that have been used in the constructions and demolition debris. The target of the present thesis work is to determine the strength characteristic of recycled aggregates for the application in concrete pavement construction. The scope of the thesis is to determine and compare the compressive strength, flexural strength and sulphate resistance of concrete by using different percentages of recycled aggregates. The investigation was carried out by using workability test, compressive strength test, flexural strength test and sulphate resistance test. A total of five mixes with replacement of coarse aggregates with 0%, 10%, 20%, 30% and 40% recycled coarse aggregates were studied. The water cement ratio was kept constant at 0.38. It was observed that workability of concrete was decreased with the increase in recycled aggregates in concrete. For the strength characteristics, the results showed that the strengths of recycled aggregate concrete was comparable to the strengths of natural aggregates concrete. Munesh Kumar | Sumesh Jain"Review Use of Demolished Concrete in Pavement Construction" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017, URL: http://www.ijtsrd.com/papers/ijtsrd2368.pdf http://www.ijtsrd.com/engineering/civil-engineering/2368/review-use-of-demolished-concrete-in-pavement-construction/munesh-kumar
IRJET- Study of Self Compacting Concrete - A ReviewIRJET Journal
The document reviews research on self-compacting concrete, which can be placed and compacted under its own weight without vibration. It summarizes various studies that have investigated the fresh and mechanical properties of self-compacting concrete made with different admixtures like fly ash and slag, finding that these can provide satisfactory strength when used to partially replace cement. The review also examines the effects of factors like water-cement ratio, paste content, and viscosity modifiers on the workability and durability of self-compacting concrete.
A Study on self-Compacting Concrete Using Portland Slag Cement with Partial R...IJERA Editor
Concrete plays a vital role as a construction material in the world. In the present scenario, waste materials from various industries are added to the mix. Over 400 million tons of waste materials are being produced by various industries every year. Foundries successfully recycle and reuse the sand many times in a foundry. When the sand can no longer be reused in the foundry, it is removed from the foundry and is termed as Foundry sand. Foundry sand production is nearly 6 to 10 million tons annually. There is a possibility of substituting natural fine aggregate with waste foundry sand which offers technical, economic and environmental advantages which are of great use in the construction sector. The construction industry is now slowly becoming aware of the environmental issues and other sustainable development issues for cement and concrete industries. It is looking for the ways and means to develop building products, which will increase the life span and quality. This thesis presents an experimental investigation on strength aspects like compressive, split tensile and flexural strength of Self Compacting Concrete (SSC) containing an industrial waste foundry sand. It is used as fine aggregate in varying proportions, replacing the fine aggregate with foundry sand as percentages of 0%, 25%, 50%, 75%, 100%. For this green SCC, all SCC tests are performed as per EFNARC guidelines i.e. slump flow, L-box, V funnel and T50 tests are carried out.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
IRJET- A Review on “Partial Replacement of Cement and Fine Aggregate by Al...IRJET Journal
This document reviews research on using copper slag and artificial aggregate as partial replacements for cement and fine aggregate in concrete. It summarizes several studies that found:
1) Replacing 20% of cement and fine aggregate with copper slag and ceramic powder increased compressive strength by around 36%.
2) Replacing 40% of fine aggregate with copper slag increased compressive strength by 17.5% while maintaining workability.
3) Using 20% copper slag as a partial cement replacement achieved a compressive strength of 85% of a reference mix without copper slag.
4) Compressive strength increased up to a 80% replacement of fine aggregate with copper slag and ferrous slag.
A Review Study on Effect of Steel Fibre and Marble Dust with Strength of Pave...ijtsrd
This document summarizes a study on the effect of adding steel fibers and marble dust to pavement quality concrete. The study tested concrete mixtures with different percentages of steel fibers (0-1%) and replacement of cement with marble dust (0-20%). It was found that concrete with 0% marble dust and 1% steel fibers achieved the maximum increase in flexural, compressive, and split tensile strength. In general, strengths increased with the addition of steel fibers up to 1% and the replacement of cement with 10-20% marble dust. The combination of 10-20% marble dust and 0.5-1% steel fibers provided high load capacity, strength, and longevity making it suitable for pavement quality concrete.
IRJET- A Review Paper on Experimental Investigation of Crumb Rubber ConcreteIRJET Journal
The document reviews previous experimental work on crumb rubber concrete. It summarizes several studies that investigated replacing natural aggregates or mixtures with crumb rubber. The studies found that compressive strength generally decreased as crumb rubber content increased but durability properties like resistance to freezing/thawing and sulfate attack improved. Some studies found that pretreating the crumb rubber with chemicals or coatings could minimize strength reductions. Replacing up to 20% of fine aggregates or 5% of total mixtures with crumb rubber produced acceptable strength properties for some applications while improving sustainability by using waste tire material.
Effect of Fly Ash on Mechanical Properties of High Strength ConcreteIRJET Journal
This document discusses a study on the effect of fly ash on the mechanical properties of high strength concrete. Concrete cubes, beams, and cylinders were cast with different percentages of fly ash replacement (0%, 10%, 20%, 30%, 40%, 50%) and tested at 7 and 28 days. The results showed that compressive strength, flexural strength, impact strength, and sorptivity decreased as the percentage of fly ash replacement increased compared to normal concrete. However, fly ash concrete can still achieve the required strengths for its applications with the right mix design and percentages. The study aims to determine the optimum fly ash content for high strength concrete.
An Experimental Study on Effects of Quarry Dust as Partial Replacement of San...IRJET Journal
This study experimentally investigated the effects of replacing natural sand with quarry dust in concrete mixtures. Various concrete mixtures with 10-60% replacement of sand with quarry dust were tested for compressive strength at 7 and 28 days. The results showed that 50% replacement of sand with quarry dust provided higher compressive strengths than normal concrete. Workability tests also showed that concrete with quarry dust was more workable than plain concrete. The study concluded that quarry dust can be effectively used as a partial replacement for natural sand in concrete.
IRJET- A Study on Strength Properties of Basalt Fibre Reinforced Concrete wit...IRJET Journal
This document reviews research on the strength properties of basalt fibre reinforced concrete with filler materials and recycled aggregate. It summarizes 14 studies that investigated how replacing portions of cement with materials like fly ash, Alccofine and recycled concrete aggregate, and adding basalt fibres, impacted the mechanical and durability properties of concrete. The studies found that partial replacement of cement with these materials and addition of basalt fibres can improve properties like compressive strength, flexural strength, crack resistance and sulphate resistance, while also making concrete more sustainable by reducing the use of natural resources. The optimal replacement levels vary by material but are generally around 10-20% of cement replaced.
Performance of High Strength Concrete – Partially Replacing Fine Aggregate wi...IRJET Journal
This document summarizes a research paper that studied the use of manufactured sand (M-sand) as a partial replacement for natural sand in high-strength concrete. The researchers created concrete mixes with M-sand replacing natural sand at 20%, 40%, and 60% replacement rates. The mixes were tested to determine the compressive, split tensile, and flexural strengths. Previous studies have found that M-sand can provide up to 40% cost savings compared to natural sand and exhibits better physical properties for use in concrete. The aim of this study was to determine the optimum replacement level of natural sand with M-sand that provides the highest strengths for a M40 grade high-strength concrete mix.
GGBS are added from 0% to 40% by dry weight of soil, first of all check the all
soil property at 0 % (no GGBS) and then compare after addition of GGBS from 10% to 40%. On
the basis of Standard Proctor test & Unconfined Compressive Strength test the optimum
percentage of GGBS is 10%. Investigations showed that generally the engineering properties
which improved with the addition of GGBS. The California bearing ratio of soil increases as the
percentage of GGBS replaced in increase.
AN EXPERIMENTAL STUDY ON PARTIAL ADDITION OF RECYCLED RUBBER TYRES AS REPLACE...IAEME Publication
Concrete, being one of the widely used construction materials in the world in
which cement and aggregate are termed to be inevitable components that are used to
manufacture it. The increase in consumption of natural resources led to demand in
higher rate where parallel to the utilization of the natural resources emerged out as a
destructive concern inthe environment. In order to protect it the only way defined to
preserve natural resources (say aggregate) is by incorporating alternative materials
say recycled or waste elements in rubber form. In this study, we have carried out an
experimental procedure adopting recycled rubber tyres as a partial replacement for
coarse aggregate to manufacture concrete tyres. Pretreating has of one with sodium
hydroxide solution to modify its surface and interfacial transition zone allowing the
rubber to adhere with cement paste. The cycle tyres were taken and its surface were
treated with a saturated aqueous solution for 20 minutes, washed in running water
and left air dry. Then the coarse aggregates were partially replaced with rubber tyres
in different percentage’s say 5%, 10%, 20% and 30% of its total volume. Prior to that
we have prepared a control mix without any replacement of coarse aggregate to draw
a comparative study. For each and every proportion of tyre mix-concrete cubes,
cylinders were prepared and cast and properties such as slump value, compressive
strength, split tensile strength, and flexural strength are determined and a comparison
has been made
Self compacting concrete for slip form pavingeSAT Journals
This document summarizes research on developing self-compacting concrete (SCC) mixes suitable for slip form paving applications. It describes a study that designed 9 SCC mixes with different cement replacements (GGBS, alccofine, metakaolin) to evaluate their fresh and hardened properties. A mini-paver system was used to simulate slip form paving in the laboratory. Test results on the mixes' flowability, green strength, and compressive strength are discussed to evaluate their potential for slip form paving construction.
Experimental Study on Durability Characteristics of High Performance Concrete...theijes
High performance concrete (HPC) is developed gradually over the last 15 years with respect to production of concrete with higher and higher strength. To enhance the properties such as durability, strength, workability, economy has increased due to the usage of mineral admixtures in making high performance concrete. The scope of the present study is to investigate the effect of mineral admixtures and by-products towards the performance of HPC. An effort has been made to concentrate on the mineral admixture of silica fume towards their pozzolanic reaction and industrial by-product of bottom ash and steel slag towards their hydration reaction can be contributed towards their strength and durability properties. The strength characteristics such as compressive strength, tensile strength and flexural strength were investigated to find the optimum replacement of mineral admixture and by-product admixture. HPC with mineral admixture of silica fume at the replacement levels of 0%, 5%, 10%, 15% & 20% were studied at the age of 28 days and industrial by-products of bottom ash and steel slag aggregate at the replacement level of 10%, 20%, 30%, 40% & 50% were studied at the age of 28 days. There were a total of 15 mixes created with different material contents. Out of 14 were HPC mixes and 1 were conventional concrete mixes. Finally strength has enhanced with the mix of silica fume can replaced by cement with 5% and bottom ash and steel slag can replaced by fine and coarse aggregate with 10% can be achieved higher strength when compared with other percentage of mixes. The combination mixes can be classified as binary and ternary mixes. Binary mixes involved combinations of silica fume and bottom ash (SF+BA), silica fume and steel slag aggregate (SF+SSA), bottom ash and steel slag aggregate (BA+SSA) and Ternary mixes involved combination of three materials such as silica fume, bottom ash and steel slag aggregate (SF+BA+SSA) in High performance concrete. The investigation revealed that the combined use of silica fume, bottom ash and steel slag aggregate improved the mechanical properties of HPC and thus there 3 materials may use as a partial replacement material in making HPC. The durability studies such as acid resistance, salt resistance, sulphate resistance & water absorption were conducted. From the experimental investigation, it was observed that mineral admixture of silica fume and industrial by-products of bottom ash & steel slag aggregate plays a vital role in improving the strength and durability parameter itself.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
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IRJET- A Review Paper on use of Marble Dust and Furnace Slag by Replacing San...IRJET Journal
This document reviews the use of marble dust and furnace slag as partial replacements for sand in pavement quality concrete. It finds that marble dust can effectively replace up to 15% of sand and furnace slag can replace up to 20% of sand. The maximum flexural strength is achieved with a mix containing 10% marble dust and 10% furnace slag. Incorporating these industrial byproducts in concrete mixtures up to 25-30% can significantly increase flexural strength while helping reduce environmental pollution from waste materials. The study concludes the marble dust and furnace slag can be used successfully as partial replacements for sand in rigid pavement concrete.
Strength and Durability Aspects of Crushed Stone Sand A Reviewijtsrd
As a result of ban on natural sand obtained from river there is deficiency of fine aggregate used in construction industry. As a replacement for the river sand the crushed stone sand is used nowadays. In this paper a effort is made to summaries the findings done by various researches and conclusive statement is made about till date study carried in regards of crushed stone sand. Prof. Dr. M. B. Chougule | Mr. A. L. Mulla "Strength and Durability Aspects of Crushed Stone Sand: A Review" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-4 , June 2020, URL: https://www.ijtsrd.com/papers/ijtsrd31052.pdf Paper Url :https://www.ijtsrd.com/engineering/civil-engineering/31052/strength-and-durability-aspects-of-crushed-stone-sand-a-review/prof-dr-m-b-chougule
IRJET- Analysis of Rice Husk Ash as a Second Stringer of Cement in Concre...IRJET Journal
This document analyzes the use of rice husk ash (RHA) as a partial replacement for cement in concrete. It discusses how RHA can improve the mechanical and durability properties of concrete while providing economic and environmental benefits. The study examines the effects of replacing cement with 7%, 14%, 21%, and 28% RHA on the consistency, workability, compressive strength, and flexural strength of concrete mixtures. The results showed that concrete containing up to 21% RHA replacement exhibited increased compressive and flexural strengths compared to the control mixture. However, strengths decreased with 28% replacement. Workability was reduced with RHA but increased again at 28% replacement. Therefore, RHA can effectively replace up to 21
IRJET - A Study on Shear Strength of Sand Reinforced with Glass FibersIRJET Journal
1) The study investigates the shear strength of sand reinforced with glass fibers through a series of direct shear tests.
2) The tests showed that the shear strength of sand increased with the addition of glass fibers, up to a fiber content of 2%. Higher fiber contents reduced dilation and increased shear strength.
3) Both the shear strength and stiffness of reinforced sand increased with higher relative density (compaction). Reinforced sand has potential applications in embankments and subgrades.
This document presents a literature review on the use of manufactured sand as a replacement for natural sand in self-compacting concrete. Several studies that investigated properties of self-compacting concrete made with manufactured sand are summarized. The studies found that workability and strength were generally maintained when replacing up to 30-50% of natural sand with manufactured sand. Higher replacement levels led to reduced strengths. Other studies examined using other materials besides manufactured sand as partial replacements for natural sand, such as seashells, recycled concrete aggregates, and waste tire rubber. Overall, the literature shows that manufactured sand and other materials can partially replace natural sand in self-compacting concrete with minimal effects on properties.
durability aspects in reference to permeable voids and leaching of calcium hy...IJCMESJOURNAL
The concrete industry is constantly looking for supplementary cementitious material with the objective of reducing the solid waste disposal problem. Fly ash (FA) and Quarry sand (QS) are some among the solid wastes generated by industry. The Quarry sand is one such material which can be used to replace sand as fine aggregate. To overcome from this crisis, partial replacement of natural sand (NS) with Quarry sand and partial replacement of cement with FA can be an economic alternative. This research is carried to study the effect of replacement of sand by Quarry sand and cement by fly ash with using admixture in concrete, especially in reference to permeable voids development, compressive strength, leaching of Ca(OH)2 in curing water and RCPT at 28, 56 and 90 days of age. A M25, M30, M40 Grade concrete were chosen for research. The mix design was carried out and three combinations were chosen, first combination using 100% Natural sand and 100% cement ( treated as controlled mix).In second combination 100%Natural sand is replaced by Quarry sand and cement remains100%. In third combination 30% cement is replaced by Fly ash and 45% Natural sand is replaced by Quarry sand (treated as critical mix). These were chosen from 30 combinations of variable % of Natural sand and Quarry sand and fly ash. The study is aim at understanding the performance of critical mix in reference to controlled mix and concrete containing 100% quarry sand. It is observed that if quarry and is used for concrete then suitable percentage natural sand and fly ash must be added to achieve desired compressive strength and performance of concrete.
An Experimental Investigation on Self Compacting Concrete with Artificial Fin...IRJET Journal
This document summarizes an experimental investigation on the properties of self-compacting concrete that uses artificial fine aggregate as a replacement for natural fine aggregate. The study tested different mixtures with cement replaced by fly ash, silica fume, and metakaolin. The concrete mixtures were tested for workability, mechanical properties like compressive strength, and durability properties like water absorption and acid resistance. The results showed that the artificial fine aggregate concrete mixtures met workability standards and had improved strength and durability compared to natural aggregate concrete.
Experimental Study on Concrete with Waste Granite Powder as an AdmixtureIJERA Editor
Granite fines which are the byproduct produced in granite factories while cutting huge granite rocks to the desired shapes. Granite fines are used as a filler material in the concrete, replacing the fine aggregate which will help in filling up the pores in the concrete. Filling up of the pores by granite fines increase the strength of the concrete and also a material which is abundantly to investigate the strength behavior of concrete with use of granite fines as an additive. Concrete is prepared with granite fines as a replacement of fine concrete in 4 different propositions namely 2.5%, 5%, 7.5% and 10% and various tests such as compressive strength, split tensile strength and flexural strength are investigated and these values are compared with the conventional concrete without the granite fines. It was observed that substitution of 7.5% of cement by weight with Granite fines in concrete resulted in an increase in compressive strength for both 7 & 28 days to 33.14 & 43.40 N/mm2 compared to 23.26 & 39.41 N/mm2 of conventional concrete. Tensile strength too followed a similar pattern with a 7.5% substitution with granite fines increasing the tensile strength for 7 & 28 days to 2.87 &4.19 N/mm2 compared with a 2.4 & 3.4 N/mm2 of conventional concrete. However flexure strength of 7.5% granite fine replacement exhibited a good improvement of flexural strength for 28 days to 6.34 N/mm2compared to a 3.35 N/mm2 of conventional concrete. Further investigations revealed that to attain the same strength of conventional concrete a 10% substitution with granite fines is effective. So it can be concluded that when locally available granite is a good partial substitute to concrete and improves compressive, tensile and flexure characteristics of concrete, while simultaneously offsetting the overall cost of concrete substantially.
Recycled aggregates consist of crushed, graded inorganic particles processed from the material that have been used in the constructions and demolition debris. The target of the present thesis work is to determine the strength characteristic of recycled aggregates for the application in concrete pavement construction. The scope of the thesis is to determine and compare the compressive strength, flexural strength and sulphate resistance of concrete by using different percentages of recycled aggregates. The investigation was carried out by using workability test, compressive strength test, flexural strength test and sulphate resistance test. A total of five mixes with replacement of coarse aggregates with 0%, 10%, 20%, 30% and 40% recycled coarse aggregates were studied. The water cement ratio was kept constant at 0.38. It was observed that workability of concrete was decreased with the increase in recycled aggregates in concrete. For the strength characteristics, the results showed that the strengths of recycled aggregate concrete was comparable to the strengths of natural aggregates concrete. Munesh Kumar | Sumesh Jain"Use of Demorlished Concrete in Pavement" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017, URL: http://www.ijtsrd.com/papers/ijtsrd2369.pdf http://www.ijtsrd.com/engineering/civil-engineering/2369/use-of-demorlished-concrete-in-pavement/munesh-kumar
IRJET- Experimental Study on Bond Strength and Flexural Strength of Concrete ...IRJET Journal
This document presents an experimental study on the bond strength and flexural strength of concrete using fly ash, copper slag, and recycled aggregate. It begins with an introduction on the use of industrial byproducts and waste materials in concrete to address sustainability issues. A literature review summarizes previous research showing that partial replacement of cement with fly ash, fine aggregate with copper slag, and coarse aggregate with recycled concrete aggregate can improve concrete properties. The document then describes the materials used in the study, including their properties. It presents a control concrete mix design and concludes by stating the study will examine the effect of adding copper slag, fly ash, and recycled aggregate on the mechanical properties of concrete.
TO INVESTIGATE THE STRENGTH PROPERTIES OF CONCRETE MIX HAVING REPLACEMENT OF ...IRJET Journal
This document investigates the strength properties of concrete mixes that replace cement with red mud and add bamboo fibers. Red mud is a waste product from aluminum production that is difficult to dispose of due to its chemical properties. Bamboo fibers are added to increase the tensile strength of concrete. The study evaluates the slump, compressive strength, split tensile strength, and flexural strength of concrete cubes and cylinders with 0-20% cement replaced by red mud and 0-1% bamboo fibers added. The results show that replacing 15% cement with red mud and adding 0.75% bamboo fibers produces concrete with optimal strength properties and is an economical and sustainable mix design.
A Review Study on Effect of Steel Fibre and Marble Dust with Strength of Pave...ijtsrd
This document summarizes a study on the effect of adding steel fibers and marble dust to pavement quality concrete. The study tested concrete mixtures with different percentages of steel fibers (0-1%) and replacement of cement with marble dust (0-20%). It was found that concrete with 0% marble dust and 1% steel fibers achieved the maximum increase in flexural, compressive, and split tensile strength. In general, strengths increased with the addition of steel fibers up to 1% and the replacement of cement with 10-20% marble dust. The combination of 10-20% marble dust and 0.5-1% steel fibers provided high load capacity, strength, and longevity making it suitable for pavement quality concrete.
IRJET- A Review Paper on Experimental Investigation of Crumb Rubber ConcreteIRJET Journal
The document reviews previous experimental work on crumb rubber concrete. It summarizes several studies that investigated replacing natural aggregates or mixtures with crumb rubber. The studies found that compressive strength generally decreased as crumb rubber content increased but durability properties like resistance to freezing/thawing and sulfate attack improved. Some studies found that pretreating the crumb rubber with chemicals or coatings could minimize strength reductions. Replacing up to 20% of fine aggregates or 5% of total mixtures with crumb rubber produced acceptable strength properties for some applications while improving sustainability by using waste tire material.
Effect of Fly Ash on Mechanical Properties of High Strength ConcreteIRJET Journal
This document discusses a study on the effect of fly ash on the mechanical properties of high strength concrete. Concrete cubes, beams, and cylinders were cast with different percentages of fly ash replacement (0%, 10%, 20%, 30%, 40%, 50%) and tested at 7 and 28 days. The results showed that compressive strength, flexural strength, impact strength, and sorptivity decreased as the percentage of fly ash replacement increased compared to normal concrete. However, fly ash concrete can still achieve the required strengths for its applications with the right mix design and percentages. The study aims to determine the optimum fly ash content for high strength concrete.
An Experimental Study on Effects of Quarry Dust as Partial Replacement of San...IRJET Journal
This study experimentally investigated the effects of replacing natural sand with quarry dust in concrete mixtures. Various concrete mixtures with 10-60% replacement of sand with quarry dust were tested for compressive strength at 7 and 28 days. The results showed that 50% replacement of sand with quarry dust provided higher compressive strengths than normal concrete. Workability tests also showed that concrete with quarry dust was more workable than plain concrete. The study concluded that quarry dust can be effectively used as a partial replacement for natural sand in concrete.
IRJET- A Study on Strength Properties of Basalt Fibre Reinforced Concrete wit...IRJET Journal
This document reviews research on the strength properties of basalt fibre reinforced concrete with filler materials and recycled aggregate. It summarizes 14 studies that investigated how replacing portions of cement with materials like fly ash, Alccofine and recycled concrete aggregate, and adding basalt fibres, impacted the mechanical and durability properties of concrete. The studies found that partial replacement of cement with these materials and addition of basalt fibres can improve properties like compressive strength, flexural strength, crack resistance and sulphate resistance, while also making concrete more sustainable by reducing the use of natural resources. The optimal replacement levels vary by material but are generally around 10-20% of cement replaced.
Performance of High Strength Concrete – Partially Replacing Fine Aggregate wi...IRJET Journal
This document summarizes a research paper that studied the use of manufactured sand (M-sand) as a partial replacement for natural sand in high-strength concrete. The researchers created concrete mixes with M-sand replacing natural sand at 20%, 40%, and 60% replacement rates. The mixes were tested to determine the compressive, split tensile, and flexural strengths. Previous studies have found that M-sand can provide up to 40% cost savings compared to natural sand and exhibits better physical properties for use in concrete. The aim of this study was to determine the optimum replacement level of natural sand with M-sand that provides the highest strengths for a M40 grade high-strength concrete mix.
GGBS are added from 0% to 40% by dry weight of soil, first of all check the all
soil property at 0 % (no GGBS) and then compare after addition of GGBS from 10% to 40%. On
the basis of Standard Proctor test & Unconfined Compressive Strength test the optimum
percentage of GGBS is 10%. Investigations showed that generally the engineering properties
which improved with the addition of GGBS. The California bearing ratio of soil increases as the
percentage of GGBS replaced in increase.
AN EXPERIMENTAL STUDY ON PARTIAL ADDITION OF RECYCLED RUBBER TYRES AS REPLACE...IAEME Publication
Concrete, being one of the widely used construction materials in the world in
which cement and aggregate are termed to be inevitable components that are used to
manufacture it. The increase in consumption of natural resources led to demand in
higher rate where parallel to the utilization of the natural resources emerged out as a
destructive concern inthe environment. In order to protect it the only way defined to
preserve natural resources (say aggregate) is by incorporating alternative materials
say recycled or waste elements in rubber form. In this study, we have carried out an
experimental procedure adopting recycled rubber tyres as a partial replacement for
coarse aggregate to manufacture concrete tyres. Pretreating has of one with sodium
hydroxide solution to modify its surface and interfacial transition zone allowing the
rubber to adhere with cement paste. The cycle tyres were taken and its surface were
treated with a saturated aqueous solution for 20 minutes, washed in running water
and left air dry. Then the coarse aggregates were partially replaced with rubber tyres
in different percentage’s say 5%, 10%, 20% and 30% of its total volume. Prior to that
we have prepared a control mix without any replacement of coarse aggregate to draw
a comparative study. For each and every proportion of tyre mix-concrete cubes,
cylinders were prepared and cast and properties such as slump value, compressive
strength, split tensile strength, and flexural strength are determined and a comparison
has been made
Self compacting concrete for slip form pavingeSAT Journals
This document summarizes research on developing self-compacting concrete (SCC) mixes suitable for slip form paving applications. It describes a study that designed 9 SCC mixes with different cement replacements (GGBS, alccofine, metakaolin) to evaluate their fresh and hardened properties. A mini-paver system was used to simulate slip form paving in the laboratory. Test results on the mixes' flowability, green strength, and compressive strength are discussed to evaluate their potential for slip form paving construction.
Experimental Study on Durability Characteristics of High Performance Concrete...theijes
High performance concrete (HPC) is developed gradually over the last 15 years with respect to production of concrete with higher and higher strength. To enhance the properties such as durability, strength, workability, economy has increased due to the usage of mineral admixtures in making high performance concrete. The scope of the present study is to investigate the effect of mineral admixtures and by-products towards the performance of HPC. An effort has been made to concentrate on the mineral admixture of silica fume towards their pozzolanic reaction and industrial by-product of bottom ash and steel slag towards their hydration reaction can be contributed towards their strength and durability properties. The strength characteristics such as compressive strength, tensile strength and flexural strength were investigated to find the optimum replacement of mineral admixture and by-product admixture. HPC with mineral admixture of silica fume at the replacement levels of 0%, 5%, 10%, 15% & 20% were studied at the age of 28 days and industrial by-products of bottom ash and steel slag aggregate at the replacement level of 10%, 20%, 30%, 40% & 50% were studied at the age of 28 days. There were a total of 15 mixes created with different material contents. Out of 14 were HPC mixes and 1 were conventional concrete mixes. Finally strength has enhanced with the mix of silica fume can replaced by cement with 5% and bottom ash and steel slag can replaced by fine and coarse aggregate with 10% can be achieved higher strength when compared with other percentage of mixes. The combination mixes can be classified as binary and ternary mixes. Binary mixes involved combinations of silica fume and bottom ash (SF+BA), silica fume and steel slag aggregate (SF+SSA), bottom ash and steel slag aggregate (BA+SSA) and Ternary mixes involved combination of three materials such as silica fume, bottom ash and steel slag aggregate (SF+BA+SSA) in High performance concrete. The investigation revealed that the combined use of silica fume, bottom ash and steel slag aggregate improved the mechanical properties of HPC and thus there 3 materials may use as a partial replacement material in making HPC. The durability studies such as acid resistance, salt resistance, sulphate resistance & water absorption were conducted. From the experimental investigation, it was observed that mineral admixture of silica fume and industrial by-products of bottom ash & steel slag aggregate plays a vital role in improving the strength and durability parameter itself.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
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IRJET- A Review Paper on use of Marble Dust and Furnace Slag by Replacing San...IRJET Journal
This document reviews the use of marble dust and furnace slag as partial replacements for sand in pavement quality concrete. It finds that marble dust can effectively replace up to 15% of sand and furnace slag can replace up to 20% of sand. The maximum flexural strength is achieved with a mix containing 10% marble dust and 10% furnace slag. Incorporating these industrial byproducts in concrete mixtures up to 25-30% can significantly increase flexural strength while helping reduce environmental pollution from waste materials. The study concludes the marble dust and furnace slag can be used successfully as partial replacements for sand in rigid pavement concrete.
Strength and Durability Aspects of Crushed Stone Sand A Reviewijtsrd
As a result of ban on natural sand obtained from river there is deficiency of fine aggregate used in construction industry. As a replacement for the river sand the crushed stone sand is used nowadays. In this paper a effort is made to summaries the findings done by various researches and conclusive statement is made about till date study carried in regards of crushed stone sand. Prof. Dr. M. B. Chougule | Mr. A. L. Mulla "Strength and Durability Aspects of Crushed Stone Sand: A Review" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-4 , June 2020, URL: https://www.ijtsrd.com/papers/ijtsrd31052.pdf Paper Url :https://www.ijtsrd.com/engineering/civil-engineering/31052/strength-and-durability-aspects-of-crushed-stone-sand-a-review/prof-dr-m-b-chougule
IRJET- Analysis of Rice Husk Ash as a Second Stringer of Cement in Concre...IRJET Journal
This document analyzes the use of rice husk ash (RHA) as a partial replacement for cement in concrete. It discusses how RHA can improve the mechanical and durability properties of concrete while providing economic and environmental benefits. The study examines the effects of replacing cement with 7%, 14%, 21%, and 28% RHA on the consistency, workability, compressive strength, and flexural strength of concrete mixtures. The results showed that concrete containing up to 21% RHA replacement exhibited increased compressive and flexural strengths compared to the control mixture. However, strengths decreased with 28% replacement. Workability was reduced with RHA but increased again at 28% replacement. Therefore, RHA can effectively replace up to 21
IRJET - A Study on Shear Strength of Sand Reinforced with Glass FibersIRJET Journal
1) The study investigates the shear strength of sand reinforced with glass fibers through a series of direct shear tests.
2) The tests showed that the shear strength of sand increased with the addition of glass fibers, up to a fiber content of 2%. Higher fiber contents reduced dilation and increased shear strength.
3) Both the shear strength and stiffness of reinforced sand increased with higher relative density (compaction). Reinforced sand has potential applications in embankments and subgrades.
This document presents a literature review on the use of manufactured sand as a replacement for natural sand in self-compacting concrete. Several studies that investigated properties of self-compacting concrete made with manufactured sand are summarized. The studies found that workability and strength were generally maintained when replacing up to 30-50% of natural sand with manufactured sand. Higher replacement levels led to reduced strengths. Other studies examined using other materials besides manufactured sand as partial replacements for natural sand, such as seashells, recycled concrete aggregates, and waste tire rubber. Overall, the literature shows that manufactured sand and other materials can partially replace natural sand in self-compacting concrete with minimal effects on properties.
durability aspects in reference to permeable voids and leaching of calcium hy...IJCMESJOURNAL
The concrete industry is constantly looking for supplementary cementitious material with the objective of reducing the solid waste disposal problem. Fly ash (FA) and Quarry sand (QS) are some among the solid wastes generated by industry. The Quarry sand is one such material which can be used to replace sand as fine aggregate. To overcome from this crisis, partial replacement of natural sand (NS) with Quarry sand and partial replacement of cement with FA can be an economic alternative. This research is carried to study the effect of replacement of sand by Quarry sand and cement by fly ash with using admixture in concrete, especially in reference to permeable voids development, compressive strength, leaching of Ca(OH)2 in curing water and RCPT at 28, 56 and 90 days of age. A M25, M30, M40 Grade concrete were chosen for research. The mix design was carried out and three combinations were chosen, first combination using 100% Natural sand and 100% cement ( treated as controlled mix).In second combination 100%Natural sand is replaced by Quarry sand and cement remains100%. In third combination 30% cement is replaced by Fly ash and 45% Natural sand is replaced by Quarry sand (treated as critical mix). These were chosen from 30 combinations of variable % of Natural sand and Quarry sand and fly ash. The study is aim at understanding the performance of critical mix in reference to controlled mix and concrete containing 100% quarry sand. It is observed that if quarry and is used for concrete then suitable percentage natural sand and fly ash must be added to achieve desired compressive strength and performance of concrete.
An Experimental Investigation on Self Compacting Concrete with Artificial Fin...IRJET Journal
This document summarizes an experimental investigation on the properties of self-compacting concrete that uses artificial fine aggregate as a replacement for natural fine aggregate. The study tested different mixtures with cement replaced by fly ash, silica fume, and metakaolin. The concrete mixtures were tested for workability, mechanical properties like compressive strength, and durability properties like water absorption and acid resistance. The results showed that the artificial fine aggregate concrete mixtures met workability standards and had improved strength and durability compared to natural aggregate concrete.
Experimental Study on Concrete with Waste Granite Powder as an AdmixtureIJERA Editor
Granite fines which are the byproduct produced in granite factories while cutting huge granite rocks to the desired shapes. Granite fines are used as a filler material in the concrete, replacing the fine aggregate which will help in filling up the pores in the concrete. Filling up of the pores by granite fines increase the strength of the concrete and also a material which is abundantly to investigate the strength behavior of concrete with use of granite fines as an additive. Concrete is prepared with granite fines as a replacement of fine concrete in 4 different propositions namely 2.5%, 5%, 7.5% and 10% and various tests such as compressive strength, split tensile strength and flexural strength are investigated and these values are compared with the conventional concrete without the granite fines. It was observed that substitution of 7.5% of cement by weight with Granite fines in concrete resulted in an increase in compressive strength for both 7 & 28 days to 33.14 & 43.40 N/mm2 compared to 23.26 & 39.41 N/mm2 of conventional concrete. Tensile strength too followed a similar pattern with a 7.5% substitution with granite fines increasing the tensile strength for 7 & 28 days to 2.87 &4.19 N/mm2 compared with a 2.4 & 3.4 N/mm2 of conventional concrete. However flexure strength of 7.5% granite fine replacement exhibited a good improvement of flexural strength for 28 days to 6.34 N/mm2compared to a 3.35 N/mm2 of conventional concrete. Further investigations revealed that to attain the same strength of conventional concrete a 10% substitution with granite fines is effective. So it can be concluded that when locally available granite is a good partial substitute to concrete and improves compressive, tensile and flexure characteristics of concrete, while simultaneously offsetting the overall cost of concrete substantially.
Recycled aggregates consist of crushed, graded inorganic particles processed from the material that have been used in the constructions and demolition debris. The target of the present thesis work is to determine the strength characteristic of recycled aggregates for the application in concrete pavement construction. The scope of the thesis is to determine and compare the compressive strength, flexural strength and sulphate resistance of concrete by using different percentages of recycled aggregates. The investigation was carried out by using workability test, compressive strength test, flexural strength test and sulphate resistance test. A total of five mixes with replacement of coarse aggregates with 0%, 10%, 20%, 30% and 40% recycled coarse aggregates were studied. The water cement ratio was kept constant at 0.38. It was observed that workability of concrete was decreased with the increase in recycled aggregates in concrete. For the strength characteristics, the results showed that the strengths of recycled aggregate concrete was comparable to the strengths of natural aggregates concrete. Munesh Kumar | Sumesh Jain"Use of Demorlished Concrete in Pavement" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017, URL: http://www.ijtsrd.com/papers/ijtsrd2369.pdf http://www.ijtsrd.com/engineering/civil-engineering/2369/use-of-demorlished-concrete-in-pavement/munesh-kumar
IRJET- Experimental Study on Bond Strength and Flexural Strength of Concrete ...IRJET Journal
This document presents an experimental study on the bond strength and flexural strength of concrete using fly ash, copper slag, and recycled aggregate. It begins with an introduction on the use of industrial byproducts and waste materials in concrete to address sustainability issues. A literature review summarizes previous research showing that partial replacement of cement with fly ash, fine aggregate with copper slag, and coarse aggregate with recycled concrete aggregate can improve concrete properties. The document then describes the materials used in the study, including their properties. It presents a control concrete mix design and concludes by stating the study will examine the effect of adding copper slag, fly ash, and recycled aggregate on the mechanical properties of concrete.
TO INVESTIGATE THE STRENGTH PROPERTIES OF CONCRETE MIX HAVING REPLACEMENT OF ...IRJET Journal
This document investigates the strength properties of concrete mixes that replace cement with red mud and add bamboo fibers. Red mud is a waste product from aluminum production that is difficult to dispose of due to its chemical properties. Bamboo fibers are added to increase the tensile strength of concrete. The study evaluates the slump, compressive strength, split tensile strength, and flexural strength of concrete cubes and cylinders with 0-20% cement replaced by red mud and 0-1% bamboo fibers added. The results show that replacing 15% cement with red mud and adding 0.75% bamboo fibers produces concrete with optimal strength properties and is an economical and sustainable mix design.
Strength Study of copper slag & Fly Ash With Replacement Of Aggregate's In Co...IRJET Journal
This document discusses a study on using industrial byproducts like fly ash and copper slag to replace aggregates in concrete for road construction. The study aims to address issues with excessive sand usage by finding sustainable alternatives. Concrete samples of different grades were produced by replacing natural sand with copper slag at varying percentages. The samples were tested for load carrying capacity and flexural strength. The results showed that concrete with 100% copper slag replacement performed similarly to normal concrete, indicating that copper slag can successfully replace sand in concrete for roads. The document also reviews several other studies on using industrial wastes in construction and their findings.
Impact On Abrasion Resistance of Concrete Using M-sand with Polypropylene and...IRJET Journal
This document discusses a study investigating the effect of using manufactured sand (m-sand) as a partial replacement for river sand in concrete, along with the addition of steel and polypropylene fibers, on the abrasion resistance and compressive strength of concrete. Testing found that replacing 60% of river sand with m-sand improved compressive strength by 16% and abrasion resistance by 23-30%. The optimum dosages were found to be 1% steel fibers by volume and 1.5kg/m3 of polypropylene fibers. A strong correlation was observed between higher compressive strength and lower abrasion loss. The study concludes that m-sand can effectively replace river sand, and the addition of fibers, particularly
IRJET- Experimental Investigation of Steel Fiber Reinforced Concrete with Par...IRJET Journal
This document discusses an experimental investigation into steel fiber reinforced concrete with partial replacement of coarse aggregate by cupola slag. The following key points are discussed:
1. Steel fibers were added to concrete to improve properties like strength and ductility. Cupola slag, a byproduct from cast iron manufacturing, was used to partially replace coarse aggregate.
2. Tests were conducted to study the effect of adding hooked steel fibers and varying amounts of cupola slag on the mechanical properties of concrete, including compressive strength, split tensile strength, and flexural strength.
3. A literature review presented research on the use of steel fibers to enhance concrete properties and studies investigating the use of cupola slag as a partial replacement for
Study on Strength of Concrete Using Robo Sand as a Partial Replacement of Fin...IJERA Editor
Robo sand is one of the most used among such materials to replace river sand, which can be used as an
alternative to fine aggregate in concrete. In the present investigation workability and strength of concrete was
evaluated by replacement of natural sand by Robo sand in proportions of 0%, 50%, 75%, and 100% is studied
for M25and M35grade concrete cubes, cylinders and prisms. Slump cone method is taken for finding
workability. For strength parameters for each grade of concrete Cubes, Cylinders and Prisms were casted and
tested at the age of 7 and 28 days. In this present experimental study on concrete having grades of M25 and M35
are prepared by replacing natural sand by Robo sand. Concrete specimens were tested for evaluation of
compressive strength and water absorption.
The corrosion in reinforcing steel is the most detrimental effect on endangering the structural behaviour of steel in
concrete. This present study focuses on predicting the corrosion behaviour of concrete in which Manufactured Sand (MSand)
is used as a partial replacement for natural sand. To retain the natural resource such as natural sand an attempt is
made in this research by partially replacing the natural sand with M-Sand. Experimental and numerical investigation has
been carried out for three different levels of corrosion 5%, 10% and 25% to define mild, medium and severe exposure
condition. National Bureau of Standard (NBS) beams have been casted and analysed for thecorrosion performances of steel
that is embedded in concrete by accelerated corrosion technique for concrete of grade M40 replaced with 60%
manufactured sand for river sand which is found optimum. From the experimental investigation, it has been observed that
there is adecline in the load carrying capacity of NBS RC beams due to reinforcement corrosion. Numerical investigation
was made with concrete modelled as solid 65 element and reinforcement modelled as Link 8 elements by ANSYS software
using finite element method.
A Review Paper of Prepared Mix Design of M25 and M20 Grade of ConcreteIRJET Journal
This document summarizes several research papers on the use of recycled concrete aggregates and other supplementary cementitious materials in concrete mixes. Specifically, it discusses studies that investigated replacing natural aggregates with recycled concrete aggregates and fly ash, as well as adding metakaolin or glass fibers, to create concrete mixes with sufficient strength and workability. The objectives and findings of each study are briefly described. Overall, the document reviews recent work on developing more sustainable concrete mixes using recycled materials to reduce construction waste.
Investigation On The Utilization Of Laterite As Replacement Of Fine Aggregate...IRJET Journal
This document investigates utilizing laterite as a partial replacement for fine aggregate in concrete. Laterite is a locally available material in India that could help address shortages of river sand for construction. Several mix designs were tested with 0%, 10%, 20%, and 30% replacement of fine aggregate with laterite. Specimens were cast and tested at curing periods of 3, 7, and 28 days to determine the compressive, tensile, and flexural strengths. The results showed that laterite concrete mixes had lower workability but maintained comparable or higher strengths compared to the control mix without laterite. Using a portion of laterite as a sustainable alternative to river sand could provide environmental and economic benefits.
IRJET- Behaviour of RC Slabs with Recycled Aggregates Subjected to Static and...IRJET Journal
1) The document discusses the use of recycled aggregates from construction and demolition waste in concrete as a replacement for natural aggregates. Recycled aggregates are produced by collecting waste concrete, crushing it, sieving it, and washing it.
2) Previous studies have found that concrete made with recycled aggregates as a partial or full replacement of natural coarse aggregates can achieve comparable compressive, tensile, and flexural strengths as normal concrete. However, further research is still needed to determine the impact on concrete durability.
3) The current study aims to produce recycled aggregates from construction waste on campus and use them in proportions of 0%, 30%, 60%, and 100% as a replacement for natural coarse aggregates in concrete mixes. The
IRJET- Experimental Study on Steel Fiber-Reinforced Pervious ConcreteIRJET Journal
This document presents an experimental study on steel fiber-reinforced pervious concrete. Pervious concrete is a type of concrete with high porosity that allows water to pass through, reducing runoff. This study aims to develop an M30 grade of pervious concrete using the IS code method. Concrete mixes were prepared by replacing fine aggregate with coarse aggregate at rates of 5%, 10%, and 15% and adding crimped steel fibers at rates of 0%, 1.5%, and 2%. The compressive strength, workability, and infiltration rate of the mixes were tested and evaluated after 7 and 28 days of curing. The results showed that replacing fine aggregate at 15% and adding 2% steel fibers produced the highest compressive
Study on Partial replacement of CAnewFA.pptxharishg6783
The document describes an experimental study on the strength properties of concrete with partial replacements of coarse aggregate and fine aggregate. Coarse aggregate was replaced with laterite stone at levels of 3%, 6%, 9% while fine aggregate (sand) was replaced with waste ceramic powder at 10%, 15%, 20%. Concrete cubes were cast and tested for compressive strength at 28 days. The optimum replacement levels were analyzed considering the mechanical properties and strength requirements of concrete. The study aims to utilize waste ceramic and laterite materials to develop eco-friendly concrete and reduce the usage of natural resources.
This document summarizes research on using foundry sand as a partial replacement for natural sand in concrete. It reviews 14 research papers that studied the effects on properties of fresh and hardened concrete like strength, durability and workability. Most studies found that replacing up to 20-30% of natural sand with foundry sand resulted in higher compressive and tensile strengths compared to normal concrete, while workability decreased as replacement increased due to fine particles in foundry sand. Water absorption generally increased with higher replacement. However, all studies concluded that concrete with foundry sand partial replacement can be suitable for structural or nonstructural uses. Further research is needed to study concrete with 100% replacement.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Strength Improvement in the Soil Using Waste MaterialsIRJET Journal
This document discusses a study on using quarry waste materials to improve soil strength in construction. The study involved constructing stone columns using quarry waste and comparing them to columns made with aggregate. Model tests were conducted where 1 or 2 columns made of quarry waste or aggregate were installed in soil at equal intervals, with or without geotextile encasement. The results showed that quarry waste performed similarly to aggregate in increasing load capacity and reducing settlement. Using quarry waste in stone columns can improve soil parameters while utilizing a waste material and providing environmental benefits over using natural aggregate. The objectives and scope of the study included investigating the effects of varying the number, spacing, and pattern of waste-filled columns.
IRJET- Utilization of Rice Husk Ash and Foundry Sand as Partial Replacement M...IRJET Journal
This document summarizes research on utilizing rice husk ash and foundry sand as partial replacements in fiber reinforced concrete. It first provides background on fiber reinforced concrete and how fibers improve tensile strength and crack resistance. It then discusses the large worldwide usage of sand in concrete and need to replace it due to supply constraints, as well as the environmental impacts of cement production. Rice husk ash and foundry sand are identified as potential replacement materials. The literature review summarizes previous research showing rice husk ash and foundry sand can improve concrete strength and foundry sand is a viable sand replacement of up to 40-60%. The materials testing confirmed the replacements meet quality and strength requirements.
Compressive and tensile strength of concrete using lateritic sand and lime st...eSAT Journals
Abstract This paper is part of a study investigating the structural characteristics of concrete using various combinations of lateritic sand and lime stone filler as complete replacement for conventional river sand fine aggregate. The lime stone filler obtained from limestone quarries. The concrete are made using varying contents of lateritic and lime stone filler as fine aggregate. The quantity of laterite is varied from 0% to 100% against lime stone filler at intervals of 25%. Samples of concrete (eg.cubes and cylinders) are made in three different grades, namely: M15, M20 and M25. It was found that 0.55 water/cement ratio produced higher compressive strengths, tensile strength and better workability for M20 mix, proportion. Specifically compressive and tensile strength ranged from 21.06 -35.2 N/mm2 and 10.06 -15.5 N/mm2 for the mixes considered. These results compare favourably with those of conventional concrete. The concrete was found to be suitable for use as structural members for buildings and related structures, where laterite content did not exceed 50%. Index Terms: compressive strength, lateritic sand, lime stone filler and tensile strength
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Replacement of Natural Fine Aggregate With Air Cooled Blast Furnace Slag An I...IJERA Editor
The aim of the investigation is to replace natural fine aggregatewith Air Cooled Blast Furnace Slag in OPC concrete. At present, nearly million tons of slag is being produced in the steel plants, in India. The generation of slag would be dual problem in disposal difficulty and environmental pollution. Some strategies should be used to utilize the slag effectively. Considering physical properties of metallurgical slags and a series of possibilities for their use in the field of civil constructions, this report demonstrates the possibilities of using air cooled blast furnace slag as partial replacement of sand in concrete. A total of five concrete mixes, containing 0%, 12.5%, 25%, 37.5% and 50% partial replacement of regular sand with air cooled blast furnace slag are investigated in the laboratory. These mixes were tested to determine axial compressive strength, split tensile strength, and flexural strength for 7days, 28days, 56days and 90days.
IRJET-Effect of Aggregate Flakiness on the Compressive Strength and Workabili...IRJET Journal
This document summarizes a study that will investigate the effect of flaky aggregate percentage (ranging from 20-70%) on the compressive strength and workability of concrete. 36 concrete cubes will be cast with varying flaky aggregate content and a water-cement ratio of 0.5. The cubes will be tested for compressive strength at 7 and 28 days. Previous studies have found that flaky aggregates increase voids and reduce strength and workability beyond a certain limit. It is expected that compressive strength will decrease as flaky aggregate percentage increases due to more voids, and that workability will also decrease with higher flaky content.
Similar to IRJET- Flexural Behaviour of RCC Beam with Partial Replacement of Fine Aggregate with Manufactured Sand (20)
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...IRJET Journal
This study compares the use of Stark Steel and TMT Steel as reinforcement materials in a two-way reinforced concrete slab. Mechanical testing is conducted to determine the tensile strength, yield strength, and other properties of each material. A two-way slab design adhering to codes and standards is executed with both materials. The performance is analyzed in terms of deflection, stability under loads, and displacement. Cost analyses accounting for material, durability, maintenance, and life cycle costs are also conducted. The findings provide insights into the economic and structural implications of each material for reinforcement selection and recommendations on the most suitable material based on the analysis.
Effect of Camber and Angles of Attack on Airfoil CharacteristicsIRJET Journal
This document discusses a study analyzing the effect of camber, position of camber, and angle of attack on the aerodynamic characteristics of airfoils. Sixteen modified asymmetric NACA airfoils were analyzed using computational fluid dynamics (CFD) by varying the camber, camber position, and angle of attack. The results showed the relationship between these parameters and the lift coefficient, drag coefficient, and lift to drag ratio. This provides insight into how changes in airfoil geometry impact aerodynamic performance.
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...IRJET Journal
This document reviews the progress and challenges of aluminum-based metal matrix composites (MMCs), focusing on their fabrication processes and applications. It discusses how various aluminum MMCs have been developed using reinforcements like borides, carbides, oxides, and nitrides to improve mechanical and wear properties. These composites have gained prominence for their lightweight, high-strength and corrosion resistance properties. The document also examines recent advancements in fabrication techniques for aluminum MMCs and their growing applications in industries such as aerospace and automotive. However, it notes that challenges remain around issues like improper mixing of reinforcements and reducing reinforcement agglomeration.
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...IRJET Journal
This document discusses research on using graph neural networks (GNNs) for dynamic optimization of public transportation networks in real-time. GNNs represent transit networks as graphs with nodes as stops and edges as connections. The GNN model aims to optimize networks using real-time data on vehicle locations, arrival times, and passenger loads. This helps increase mobility, decrease traffic, and improve efficiency. The system continuously trains and infers to adapt to changing transit conditions, providing decision support tools. While research has focused on performance, more work is needed on security, socio-economic impacts, contextual generalization of models, continuous learning approaches, and effective real-time visualization.
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
This document summarizes a research project that aims to compare the structural performance of conventional slab and grid slab systems in multi-story buildings using ETABS software. The study will analyze both symmetric and asymmetric building models under various loading conditions. Parameters like deflections, moments, shears, and stresses will be examined to evaluate the structural effectiveness of each slab type. The results will provide insights into the comparative behavior of conventional and grid slabs to help engineers and architects select appropriate slab systems based on building layouts and design requirements.
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
This document summarizes and reviews a research paper on the seismic response of reinforced concrete (RC) structures with plan and vertical irregularities, with and without infill walls. It discusses how infill walls can improve or reduce the seismic performance of RC buildings, depending on factors like wall layout, height distribution, connection to the frame, and relative stiffness of walls and frames. The reviewed research paper analyzes the behavior of infill walls, effects of vertical irregularities, and seismic performance of high-rise structures under linear static and dynamic analysis. It studies response characteristics like story drift, deflection and shear. The document also provides literature on similar research investigating the effects of infill walls, soft stories, plan irregularities, and different
This document provides a review of machine learning techniques used in Advanced Driver Assistance Systems (ADAS). It begins with an abstract that summarizes key applications of machine learning in ADAS, including object detection, recognition, and decision-making. The introduction discusses the integration of machine learning in ADAS and how it is transforming vehicle safety. The literature review then examines several research papers on topics like lightweight deep learning models for object detection and lane detection models using image processing. It concludes by discussing challenges and opportunities in the field, such as improving algorithm robustness and adaptability.
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...IRJET Journal
The document analyzes temperature and precipitation trends in Asosa District, Benishangul Gumuz Region, Ethiopia from 1993 to 2022 based on data from the local meteorological station. The results show:
1) The average maximum and minimum annual temperatures have generally decreased over time, with maximum temperatures decreasing by a factor of -0.0341 and minimum by -0.0152.
2) Mann-Kendall tests found the decreasing temperature trends to be statistically significant for annual maximum temperatures but not for annual minimum temperatures.
3) Annual precipitation in Asosa District showed a statistically significant increasing trend.
The conclusions recommend development planners account for rising summer precipitation and declining temperatures in
P.E.B. Framed Structure Design and Analysis Using STAAD ProIRJET Journal
This document discusses the design and analysis of pre-engineered building (PEB) framed structures using STAAD Pro software. It provides an overview of PEBs, including that they are designed off-site with building trusses and beams produced in a factory. STAAD Pro is identified as a key tool for modeling, analyzing, and designing PEBs to ensure their performance and safety under various load scenarios. The document outlines modeling structural parts in STAAD Pro, evaluating structural reactions, assigning loads, and following international design codes and standards. In summary, STAAD Pro is used to design and analyze PEB framed structures to ensure safety and code compliance.
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...IRJET Journal
This document provides a review of research on innovative fiber integration methods for reinforcing concrete structures. It discusses studies that have explored using carbon fiber reinforced polymer (CFRP) composites with recycled plastic aggregates to develop more sustainable strengthening techniques. It also examines using ultra-high performance fiber reinforced concrete to improve shear strength in beams. Additional topics covered include the dynamic responses of FRP-strengthened beams under static and impact loads, and the performance of preloaded CFRP-strengthened fiber reinforced concrete beams. The review highlights the potential of fiber composites to enable more sustainable and resilient construction practices.
Survey Paper on Cloud-Based Secured Healthcare SystemIRJET Journal
This document summarizes a survey on securing patient healthcare data in cloud-based systems. It discusses using technologies like facial recognition, smart cards, and cloud computing combined with strong encryption to securely store patient data. The survey found that healthcare professionals believe digitizing patient records and storing them in a centralized cloud system would improve access during emergencies and enable more efficient care compared to paper-based systems. However, ensuring privacy and security of patient data is paramount as healthcare incorporates these digital technologies.
Review on studies and research on widening of existing concrete bridgesIRJET Journal
This document summarizes several studies that have been conducted on widening existing concrete bridges. It describes a study from China that examined load distribution factors for a bridge widened with composite steel-concrete girders. It also outlines challenges and solutions for widening a bridge in the UAE, including replacing bearings and stitching the new and existing structures. Additionally, it discusses two bridge widening projects in New Zealand that involved adding precast beams and stitching to connect structures. Finally, safety measures and challenges for strengthening a historic bridge in Switzerland under live traffic are presented.
React based fullstack edtech web applicationIRJET Journal
The document describes the architecture of an educational technology web application built using the MERN stack. It discusses the frontend developed with ReactJS, backend with NodeJS and ExpressJS, and MongoDB database. The frontend provides dynamic user interfaces, while the backend offers APIs for authentication, course management, and other functions. MongoDB enables flexible data storage. The architecture aims to provide a scalable, responsive platform for online learning.
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...IRJET Journal
This paper proposes integrating Internet of Things (IoT) and blockchain technologies to help implement objectives of India's National Education Policy (NEP) in the education sector. The paper discusses how blockchain could be used for secure student data management, credential verification, and decentralized learning platforms. IoT devices could create smart classrooms, automate attendance tracking, and enable real-time monitoring. Blockchain would ensure integrity of exam processes and resource allocation, while smart contracts automate agreements. The paper argues this integration has potential to revolutionize education by making it more secure, transparent and efficient, in alignment with NEP goals. However, challenges like infrastructure needs, data privacy, and collaborative efforts are also discussed.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.IRJET Journal
This document provides a review of research on the performance of coconut fibre reinforced concrete. It summarizes several studies that tested different volume fractions and lengths of coconut fibres in concrete mixtures with varying compressive strengths. The studies found that coconut fibre improved properties like tensile strength, toughness, crack resistance, and spalling resistance compared to plain concrete. Volume fractions of 2-5% and fibre lengths of 20-50mm produced the best results. The document concludes that using a 4-5% volume fraction of coconut fibres 30-40mm in length with M30-M60 grade concrete would provide benefits based on previous research.
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...IRJET Journal
The document discusses optimizing business management processes through automation using Microsoft Power Automate and artificial intelligence. It provides an overview of Power Automate's key components and features for automating workflows across various apps and services. The document then presents several scenarios applying automation solutions to common business processes like data entry, monitoring, HR, finance, customer support, and more. It estimates the potential time and cost savings from implementing automation for each scenario. Finally, the conclusion emphasizes the transformative impact of AI and automation tools on business processes and the need for ongoing optimization.
Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
The document describes the seismic design of a G+5 steel building frame located in Roorkee, India according to Indian codes IS 1893-2002 and IS 800. The frame was analyzed using the equivalent static load method and response spectrum method, and its response in terms of displacements and shear forces were compared. Based on the analysis, the frame was designed as a seismic-resistant steel structure according to IS 800:2007. The software STAAD Pro was used for the analysis and design.
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...IRJET Journal
This research paper explores using plastic waste as a sustainable and cost-effective construction material. The study focuses on manufacturing pavers and bricks using recycled plastic and partially replacing concrete with plastic alternatives. Initial results found that pavers and bricks made from recycled plastic demonstrate comparable strength and durability to traditional materials while providing environmental and cost benefits. Additionally, preliminary research indicates incorporating plastic waste as a partial concrete replacement significantly reduces construction costs without compromising structural integrity. The outcomes suggest adopting plastic waste in construction can address plastic pollution while optimizing costs, promoting more sustainable building practices.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELgerogepatton
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
Adaptive synchronous sliding control for a robot manipulator based on neural ...IJECEIAES
Robot manipulators have become important equipment in production lines, medical fields, and transportation. Improving the quality of trajectory tracking for
robot hands is always an attractive topic in the research community. This is a
challenging problem because robot manipulators are complex nonlinear systems
and are often subject to fluctuations in loads and external disturbances. This
article proposes an adaptive synchronous sliding control scheme to improve trajectory tracking performance for a robot manipulator. The proposed controller
ensures that the positions of the joints track the desired trajectory, synchronize
the errors, and significantly reduces chattering. First, the synchronous tracking
errors and synchronous sliding surfaces are presented. Second, the synchronous
tracking error dynamics are determined. Third, a robust adaptive control law is
designed,the unknown components of the model are estimated online by the neural network, and the parameters of the switching elements are selected by fuzzy
logic. The built algorithm ensures that the tracking and approximation errors
are ultimately uniformly bounded (UUB). Finally, the effectiveness of the constructed algorithm is demonstrated through simulation and experimental results.
Simulation and experimental results show that the proposed controller is effective with small synchronous tracking errors, and the chattering phenomenon is
significantly reduced.
Low power architecture of logic gates using adiabatic techniquesnooriasukmaningtyas
The growing significance of portable systems to limit power consumption in ultra-large-scale-integration chips of very high density, has recently led to rapid and inventive progresses in low-power design. The most effective technique is adiabatic logic circuit design in energy-efficient hardware. This paper presents two adiabatic approaches for the design of low power circuits, modified positive feedback adiabatic logic (modified PFAL) and the other is direct current diode based positive feedback adiabatic logic (DC-DB PFAL). Logic gates are the preliminary components in any digital circuit design. By improving the performance of basic gates, one can improvise the whole system performance. In this paper proposed circuit design of the low power architecture of OR/NOR, AND/NAND, and XOR/XNOR gates are presented using the said approaches and their results are analyzed for powerdissipation, delay, power-delay-product and rise time and compared with the other adiabatic techniques along with the conventional complementary metal oxide semiconductor (CMOS) designs reported in the literature. It has been found that the designs with DC-DB PFAL technique outperform with the percentage improvement of 65% for NOR gate and 7% for NAND gate and 34% for XNOR gate over the modified PFAL techniques at 10 MHz respectively.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.