The document presents results from an experimental study on concrete containing ground granulated blast furnace slag (GGBFS) and metakaolin as partial replacements for cement, and calcium carbide residue (CCR) as a partial replacement for fine aggregate. Concrete mixes were prepared with GGBFS and metakaolin replacing 5%, 10%, and 15% of cement by weight, and CCR replacing 5% and 10% of fine aggregate. The compressive strength, flexural strength, and acid resistance of the mixes were tested and compared to a control mix at ages of 28 days. Results showed that concrete containing GGBFS or metakaolin along with CCR achieved comparable or higher strengths than the control mix.
IRJET-Comparative Study of Strength & Cost of Fibre Reinforced Geopolymer Con...IRJET Journal
This document presents the results of an experimental study comparing the strength and cost of fibre-reinforced geopolymer concrete and conventional concrete. Geopolymer concrete is made from fly ash, alkaline liquids like sodium silicate and sodium hydroxide, aggregates, and sometimes fibres. It offers an eco-friendly alternative to ordinary Portland cement concrete. The study found that using glass fibres increased the compressive strength of geopolymer concrete by about 18% compared to non-fibre concrete. Steel fibres also increased the split tensile strength significantly. While geopolymer concrete achieved high early strength within 7 days, conventional concrete continued gaining strength beyond 7 days. In terms of cost, geopolymer concrete provides savings over conventional
IRJET- Study on Self Compacting Concrete as Partial Replacement for Fine Aggr...IRJET Journal
This document summarizes a study on the use of coarse aggregate as a partial replacement for fine aggregate in self-compacting concrete. The fine aggregate was replaced with coarse aggregate at percentages of 9%, 12%, 15%, and 18%. Testing of the concrete mixtures found that 18% replacement of fine aggregate with coarse aggregate produced optimal results for self-compacting concrete. The concrete mixtures were tested for properties such as slump flow, J-ring flow, V-funnel flow, and L-box ratio to evaluate flowability and passing ability. Compressive strength was also tested at 7 and 28 days. The results provide useful information for using coarse aggregate to partially replace fine aggregate in advanced concrete production.
IRJET- Experimental Investigation on Effect of Alccofine with Flyash an...IRJET Journal
This document presents an experimental investigation on the effect of Alccofine with fly ash and GGBS on high performance concrete. Ten concrete mixtures were tested with different replacement levels of cement with Alccofine (5-10%), fly ash (15%), and GGBS (15%). The concrete mixtures were tested for workability and retention time up to 3 hours. Test results showed that the addition of Alccofine, fly ash, and GGBS improved the workability and strength properties of concrete. Applying value engineering principles to the concrete mixtures helped optimize mix designs and reduced costs.
Experimental study on Self Compacting Geopolymer ConcreteIRJET Journal
This document summarizes an experimental study on self-compacting geopolymer concrete. The study investigated replacing fly ash-based geopolymer concrete with various percentages of ground granulated blast furnace slag (GGBS). Test results found that adding GGBS decreased workability but increased strength. Both oven-cured and ambient-cured concrete specimens showed increased strength with higher binder content. The study concluded that self-compacting geopolymer concrete is suitable for both curing methods when using GGBS to replace fly ash in the binder.
IRJET- Investigation on Geopolymer ConcreteIRJET Journal
This document discusses an investigation into geopolymer concrete as an alternative to traditional cement concrete. It provides background on geopolymer concrete, including that it uses an alkaline activator and fly ash as its binding material instead of cement. The document then details the materials and mix proportions used to create geopolymer concrete specimens for the study. Specifically, it used a mix ratio of fly ash to fine and coarse aggregates of 1:1.54:3.43. The specimens were cast and cured by exposure to daylight instead of heat curing. The compressive strength of the geopolymer concrete specimens was then tested at various ages and found to reach the target strength of M25 grade concrete within 14 days of daylight curing.
IRJET- To Study the Suitability and Performance of Expanded Perlite Aggregate...IRJET Journal
This document presents the results of an experimental study investigating the use of expanded perlite aggregate (EPA) as a partial replacement for crushed rock fines (CRF) in concrete. Different mixing procedures were tested to determine the optimal method. Concrete mixtures were prepared with EPA replacing CRF at levels from 5% to 25%. The fresh and hardened properties of the concrete mixtures were evaluated through tests like slump, density, compressive strength, split tensile strength, and flexural strength. Durability was assessed using tests for water permeability, rapid chloride permeability, acid resistance, and sorpitivity. Exposure to different temperatures over time was also studied. The results showed that a 10% replacement of CRF with EPA provided increases in strength
Experimental Study on Various Strength of High Performance Concrete by using ...IRJET Journal
This document presents an experimental study on the effects of using metakaolin and nano-silica on the strength properties of high performance concrete. Concrete cubes, cylinders, and beams were cast with various mix proportions replacing 0-30% of cement with metakaolin and 1.5-4.5% with nano-silica. The specimens were tested after 7 and 28 days of curing to determine their compressive, tensile, and flexural strengths. The results showed that partial replacements of cement with metakaolin and nano-silica can improve the strength characteristics of concrete.
Effect of Metakaolin on the Properties of ConcreteIRJET Journal
The document studies the effect of replacing cement with metakaolin, an industrial byproduct, in concrete mixtures at replacement levels of 5-25%. Tests were conducted to evaluate the compressive strength, flexural strength, and workability of concrete mixtures with metakaolin replacement. The results showed that replacing up to 15% of cement with metakaolin increased the compressive and flexural strengths of the hardened concrete compared to a traditional concrete mixture.
IRJET-Comparative Study of Strength & Cost of Fibre Reinforced Geopolymer Con...IRJET Journal
This document presents the results of an experimental study comparing the strength and cost of fibre-reinforced geopolymer concrete and conventional concrete. Geopolymer concrete is made from fly ash, alkaline liquids like sodium silicate and sodium hydroxide, aggregates, and sometimes fibres. It offers an eco-friendly alternative to ordinary Portland cement concrete. The study found that using glass fibres increased the compressive strength of geopolymer concrete by about 18% compared to non-fibre concrete. Steel fibres also increased the split tensile strength significantly. While geopolymer concrete achieved high early strength within 7 days, conventional concrete continued gaining strength beyond 7 days. In terms of cost, geopolymer concrete provides savings over conventional
IRJET- Study on Self Compacting Concrete as Partial Replacement for Fine Aggr...IRJET Journal
This document summarizes a study on the use of coarse aggregate as a partial replacement for fine aggregate in self-compacting concrete. The fine aggregate was replaced with coarse aggregate at percentages of 9%, 12%, 15%, and 18%. Testing of the concrete mixtures found that 18% replacement of fine aggregate with coarse aggregate produced optimal results for self-compacting concrete. The concrete mixtures were tested for properties such as slump flow, J-ring flow, V-funnel flow, and L-box ratio to evaluate flowability and passing ability. Compressive strength was also tested at 7 and 28 days. The results provide useful information for using coarse aggregate to partially replace fine aggregate in advanced concrete production.
IRJET- Experimental Investigation on Effect of Alccofine with Flyash an...IRJET Journal
This document presents an experimental investigation on the effect of Alccofine with fly ash and GGBS on high performance concrete. Ten concrete mixtures were tested with different replacement levels of cement with Alccofine (5-10%), fly ash (15%), and GGBS (15%). The concrete mixtures were tested for workability and retention time up to 3 hours. Test results showed that the addition of Alccofine, fly ash, and GGBS improved the workability and strength properties of concrete. Applying value engineering principles to the concrete mixtures helped optimize mix designs and reduced costs.
Experimental study on Self Compacting Geopolymer ConcreteIRJET Journal
This document summarizes an experimental study on self-compacting geopolymer concrete. The study investigated replacing fly ash-based geopolymer concrete with various percentages of ground granulated blast furnace slag (GGBS). Test results found that adding GGBS decreased workability but increased strength. Both oven-cured and ambient-cured concrete specimens showed increased strength with higher binder content. The study concluded that self-compacting geopolymer concrete is suitable for both curing methods when using GGBS to replace fly ash in the binder.
IRJET- Investigation on Geopolymer ConcreteIRJET Journal
This document discusses an investigation into geopolymer concrete as an alternative to traditional cement concrete. It provides background on geopolymer concrete, including that it uses an alkaline activator and fly ash as its binding material instead of cement. The document then details the materials and mix proportions used to create geopolymer concrete specimens for the study. Specifically, it used a mix ratio of fly ash to fine and coarse aggregates of 1:1.54:3.43. The specimens were cast and cured by exposure to daylight instead of heat curing. The compressive strength of the geopolymer concrete specimens was then tested at various ages and found to reach the target strength of M25 grade concrete within 14 days of daylight curing.
IRJET- To Study the Suitability and Performance of Expanded Perlite Aggregate...IRJET Journal
This document presents the results of an experimental study investigating the use of expanded perlite aggregate (EPA) as a partial replacement for crushed rock fines (CRF) in concrete. Different mixing procedures were tested to determine the optimal method. Concrete mixtures were prepared with EPA replacing CRF at levels from 5% to 25%. The fresh and hardened properties of the concrete mixtures were evaluated through tests like slump, density, compressive strength, split tensile strength, and flexural strength. Durability was assessed using tests for water permeability, rapid chloride permeability, acid resistance, and sorpitivity. Exposure to different temperatures over time was also studied. The results showed that a 10% replacement of CRF with EPA provided increases in strength
Experimental Study on Various Strength of High Performance Concrete by using ...IRJET Journal
This document presents an experimental study on the effects of using metakaolin and nano-silica on the strength properties of high performance concrete. Concrete cubes, cylinders, and beams were cast with various mix proportions replacing 0-30% of cement with metakaolin and 1.5-4.5% with nano-silica. The specimens were tested after 7 and 28 days of curing to determine their compressive, tensile, and flexural strengths. The results showed that partial replacements of cement with metakaolin and nano-silica can improve the strength characteristics of concrete.
Effect of Metakaolin on the Properties of ConcreteIRJET Journal
The document studies the effect of replacing cement with metakaolin, an industrial byproduct, in concrete mixtures at replacement levels of 5-25%. Tests were conducted to evaluate the compressive strength, flexural strength, and workability of concrete mixtures with metakaolin replacement. The results showed that replacing up to 15% of cement with metakaolin increased the compressive and flexural strengths of the hardened concrete compared to a traditional concrete mixture.
Evaluation of Performance of Geopolymer Concrete in Acid EnvironmentIRJET Journal
This document evaluates the performance of geopolymer concrete and Portland cement concrete in acid environments. Specimens of both concretes were immersed in 2% sulfuric acid and hydrochloric acid solutions for periods of 28, 56, and 112 days. The weight change and compressive strength of the specimens were measured to analyze their resistance to acid attack. The results showed that geopolymer concrete exhibited higher resistance to both acids compared to Portland cement concrete, with lower weight loss and strength reduction when immersed. Geopolymer concrete therefore has potential for use in acid-prone environments where conventional concrete is vulnerable.
IRJET- Effect of Nano Titanium Dioxide and M-Sand in Self Curing ConcreteIRJET Journal
The document presents research on developing self-curing concrete using nano titanium dioxide (TiO2) and manufactured sand (M-sand). Nano TiO2 and poly-ethylene glycol 600 (PEG 600) were used to improve the compressive strength of self-curing concrete. Concrete cubes were made by replacing cement with 0.5% and 1% nano TiO2 and adding 0.5-2.5% PEG 600. The highest compressive strength of 38.75 N/mm2 was achieved with 1% nano TiO2, 1% PEG 600, and M-sand, compared to conventional concrete cubes and other self-curing mixtures. The experimental results showed that all self-curing concrete cubes
Strength Characterstics of Self Compacting Concrete with Partial Replacement ...IRJET Journal
The document presents the results of an experimental study investigating the strength properties of self-compacting concrete with partial replacement of cement by mineral admixtures and inclusion of polypropylene fibers. Four mixes were tested: a control mix with 100% cement and three mixes with 70% cement replaced with combinations of GGBS, fly ash, and alccofine. Compressive, split tensile, and flexural strengths were tested at 7 and 28 days. Test results showed that mixes with mineral admixtures and polypropylene fibers had higher strengths compared to corresponding mixes without fibers, with compressive strengths increasing up to 10% with fibers.
IRJET-High Volume Replacement of Cement by Ultra-Fine Fly Ash: Performance of...IRJET Journal
This study investigated the use of ultra-fine fly ash (UFFA) to replace cement at high volumes (30-50%) in 1:3 and 1:4.5 mortars. The results showed that significant cement reduction can be achieved while maintaining or improving compressive strength levels. For 1:3 mortar, compressive strength peaked at 40% UFFA replacement, while 1:4.5 mortar peaked at 30% replacement. At 50% replacement, strengths were equal to the control mixes with no replacement. Therefore, high volume UFFA replacement can provide cement reduction and comparable strength performance in mortars.
IRJET- Influence of Coal Tar Epoxy Paint on Concrete Exposed to Sulfate E...IRJET Journal
The document discusses a study on the influence of coal tar epoxy paint on concrete exposed to sulfate exposure. Concrete specimens with and without coal tar epoxy paint coating were exposed to 4% Na2SO4 solution for 12 months. The study found that concrete with coal tar epoxy paint coating showed excellent resistance to sulfate attack compared to uncoated concrete. Even concrete made with pozzolanic materials like fly ash and GGBS showed more damage than concrete with a coal tar epoxy paint surface coating. The coal tar epoxy paint effectively protected the concrete from sulfate ingress and attack.
IRJET- Experimental Study on Durability Characteristics of Poly- Vinyl Alcoho...IRJET Journal
This study experimentally investigates the durability characteristics of concrete with partial replacement of coarse aggregate with polyvinyl alcohol (PVA) treated oil palm shell (OPS). Tests are conducted to determine the water absorption, sorptivity, compressive strength, volume of permeable voids, and salt ponding resistance of normal concrete versus concrete with 10-30% OPS replacement. Results show 30% OPS replacement concrete achieves maximum strength and durability. This concrete demonstrates improved water absorption, voids, and sorptivity over normal concrete, but has higher chloride penetration making it unsuitable for marine structures. Using PVA treated OPS can reduce construction costs due to use of an abundant agricultural waste as aggregate.
EFFECT OF SELF - CURING ON MECHANICAL CHARACTERISTIC OF SELF-COMPACTING CONCR...IAEME Publication
In this Research Study, the Use of Super Absorbent Polymer (SAP) and Polyethylene glycol as Self curing agents in concrete is proven to have many positive effects on the properties of concrete in its both stages; Fresh and hardened concrete. The function of Self- curing agents is to reduce the water evaporation from concrete. The use of Self Curing admixtures is very important from the point of view that saving of water is a necessarily everyday (each one cubic metre of concrete requires 3m3 of water in construction, most of water consumed is for curing, Hence it is necessary to reduce the use of water in construction and save water). The Present research work focuses on use of Polyethylene glycol (PEG) and Super Absorbent Polymer (SAP) as self-curing agents, affect of Self Curing Concrete agents on Mechanical Characteristics Using Msand, and compared with those of conventionally cured concrete. In this Study 0.1%, 0.2% and 0.3% SAP and 1%, 1.5% and 2% PEG was varied for M25 grade of Concrete Mixes and Specimen. The experimental results show that, in general, the combined use of, 1.5%, 0.2% SAP in combination with Fly ash and Silica Fume as mineral admixture showed superior results in comparison to conventional curing method, enhancing the mechanical properties of SCC.
IRJET- Sulphuric Acid Durability Studies of Concrete with Portland Cement (CE...IRJET Journal
This document summarizes a study on the sulphuric acid durability of concrete with different cement types and partial cement replacements. Concrete cubes were made with Portland cement (CEM I), Portland composite cements (CEM II/A-M and CEM II/B-M), and with partial replacements of Portland cement with fly ash and GGBFS. Cubes were submerged in 5% sulphuric acid for 90 days. Results showed concrete with higher Portland cement content was most affected, while CEM II/B-M concrete was most durable. Partial replacements of 25% fly ash and 70% GGBFS showed higher durability against sulphuric acid attack compared to the reference mix.
An Experimental Investigation of Concrete of Partial Replacement of Cement by...IRJET Journal
This document presents the results of an experimental study investigating the effects of partially replacing cement with metakaolin in concrete mixtures. Metakaolin is an industrial byproduct that is produced by calcining kaolin clay. Three concrete mixtures (M20, M25, M30) were tested with metakaolin replacing cement at levels of 5%, 10%, 15%, and 20%. Compressive and split tensile strengths were tested at 7 and 28 days. The results showed that both compressive and tensile strengths generally increased as the level of metakaolin replacement increased up to 15%, with the highest strengths achieved with 15% metakaolin replacement.
IRJET- Effects of Use of Metakaolin and Pond Ash in different Types of ConcreteIRJET Journal
1. The study evaluated the effects of using metakaolin (MK) and pond ash (PA) as partial replacements for cement in different types of concrete.
2. MK was used at 20% replacement and PA at 15% replacement in M25 grade concrete mixes containing ordinary Portland cement (OPC), Portland pozzolana cement (PPC), and rapid hardening cement (RHC).
3. Test results showed that compressive strengths at 7 and 28 days were highest for RHC and RHC with MK concrete, followed by PPC and PPC with MK concrete. PA concrete mixtures performed better than MK concrete mixtures overall.
IRJET- Effect on Steel Slag Concrete using Silica Fume along with FlyashIRJET Journal
This document discusses research into using steel slag, fly ash, and silica fume in concrete mixtures to improve strength and durability. It conducted experiments replacing portions of cement with fly ash or silica fume. Results showed additions of these materials increased strength and reduced porosity of concrete. Mixtures containing equal parts fly ash and silica fume performed best, with compressive strength increasing as replacement amounts rose. The study aims to utilize industrial byproducts like steel slag and improve sustainability of concrete.
Effect of Partial Replacement of Cement by Silica Fume and Sand by Quarry Dus...IRJET Journal
This study investigated the effect of partially replacing cement with silica fume and sand with quarry dust on the strength and durability of concrete. Concrete mixtures were prepared with 8-12% silica fume and 20-40% quarry dust replacements. Testing showed that 10% silica fume and 30% quarry dust replacements increased compressive strength the most at 18.5% over the control mix. This mix also demonstrated the highest durability with the lowest rapid chloride permeability. Workability decreased with higher silica fume and quarry dust content due to their finer particles and higher water absorption. The study concluded that using 10% silica fume and 30% quarry dust provided environmental and economic benefits over
This document discusses the use of granite waste powder as a filler material in self-compacting concrete (SCC). It begins with an introduction to SCC and its benefits over traditional vibrated concrete. The researcher then details their experimental process for developing SCC mixes using different proportions of granite powder, water, cement, coarse aggregate, and fine aggregate. A number of initial trial mixes were produced to determine the optimal mix proportions and flow properties. The compressive strengths of the trial mixes were then tested at 3 and 7 days. Based on the flowability and early strength results, the best performing mixes for each paste volume were selected for further testing of hardened properties like flexural strength, split tensile strength, and density. The results showed
IRJET- An Experimental Investigation on Durability Studies of Concrete by usi...IRJET Journal
The document experimentally investigates the durability of concrete made with different types of cements (OPC, PPC, PSC) when cured under normal water, sea water, acid attack, and sulphate attack. Compressive strength was tested at various ages for concrete specimens made with each cement and cured under each condition. For all curing conditions, PSC concrete exhibited the highest compressive strengths compared to OPC and PPC concrete. Under normal water curing, strengths increased with time for all cements, with PSC reaching 38.92 MPa at 120 days. Sea water curing resulted in lower strengths than normal curing. Acid and sulphate attack reduced strengths compared to other curing
This document presents a proposed method for designing high-strength concrete mixes containing silica fume. The method aims to determine mix proportions that achieve compressive strengths between 41-90 MPa, with maximum aggregate sizes of 14-25 mm and silica fume replacements of 5-15% by weight of cement. The method involves fixing the cementitious material at 520 kg/m3 and determining initial superplasticizer dosages, water-cement ratios, and aggregate contents needed to achieve the target strengths through a series of trial mixtures. Forty-five initial trials were used to establish superplasticizer dosages, followed by additional trials to refine the relationships between water-cement ratio, aggregate size and amount, and achieved compress
IRJET- Experimental Study on Partial Replacement of Cement with Fly Ash and F...IRJET Journal
The document presents the results of an experimental study evaluating the strength characteristics of concrete with partial replacements of cement with fly ash and fine aggregate with steel slag. Concrete cubes were cast with 0%, 10%, 20%, 25%, and 30% replacements and tested after 7 and 28 days of curing. The optimum mix was found to be 0% cement replaced with fly ash and 20% fine aggregate replaced with steel slag, which achieved nearly 10% higher compressive strength than conventional concrete. Replacing more than 20% resulted in lower strengths. The study aims to promote the use of industrial wastes in concrete production to reduce environmental impacts.
IRJET- Influence of Addition of Nano-Silica on Physical and Mechanical Proper...IRJET Journal
This document summarizes research on the influence of adding nano-silica on the physical and mechanical properties of ultra-high performance mortar and concrete. The researcher investigated different mixes with 0.6% nano-silica replacement of cement by weight, using dolomite, crushed granite, or sand aggregates. Specimens were tested for compression, splitting tensile, and flexural strength at ages 2, 7, and 28 days of curing. Optimum results were found for mixes with 0.6% nano-silica and dolomite aggregates. These mixes showed maximum compression and splitting tensile strength as well as minimum absorption at 28 days. The addition of nano-silica was found to improve concrete density and
IRJET- Experimental Investigation of Epoxy Polymer Concrete with Partial Repl...IRJET Journal
This document summarizes an experimental investigation into epoxy polymer concrete with partial replacement of cement by Alccofine. The study aims to evaluate the effectiveness and performance of concrete where OPC cement is replaced with Alccofine 1203. Epoxy resin is added to improve strength and properties, while Alccofine is used to partially replace cement to reduce carbon dioxide emissions. Specimens are tested with different epoxy and Alccofine proportions and their mechanical properties evaluated. Previous studies found that Alccofine improves strength and durability at the 15% replacement level and that combinations of Alccofine and other materials like fly ash can further increase compressive strength.
IRJET- Comparative Study of Alternate Forms of Concrete by Replacing Bric...IRJET Journal
This document presents a study comparing different forms of concrete made by partially replacing traditional aggregates with recycled materials. Brick bats, crushed clay tiles were used to replace up to 40% of coarse aggregate. Lead slag, an industrial byproduct, was used to replace up to 60% of fine aggregate. Cubes were cast and tested at 7, 14, and 28 days to determine compressive strength. Results showed concrete with 30% replacement of coarse aggregate and 30% replacement of fine aggregate achieved near equivalent compressive strengths as traditional concrete. Using these recycled materials provides an economical and environmentally friendly alternative to traditional concrete mixes.
IRJET- Utilization of Red Mud to Improve the Strength of Self Compacting Conc...IRJET Journal
This study summarizes the results of an experimental investigation into the properties of self-compacting concrete containing red mud and fly ash. Red mud was substituted for cement by weight in proportions from 0% to 15% while fly ash content was kept at 20% of total powder. Tests were performed to evaluate fresh and hardened properties. Fresh properties like slump flow, V-funnel time and passing ability were within specified limits up to 10% red mud substitution. Compressive strength initially increased up to 7.5% red mud but then decreased with further addition, showing red mud can partially replace cement in self-compacting concrete.
IRJET- A Experimental Investigation on Concrete Containing GGBFS with Kota St...IRJET Journal
1) The study investigates the use of Ground Granulated Blast Furnace Slag (GGBFS) as a partial cement replacement at 30% and 40% levels, and the use of Kota stone powder or marble stone powder to partially replace fine aggregate at 10% and 15% levels.
2) Concrete mixes were tested for compressive strength, flexural strength, and splitting tensile strength at 28 days. Results showed strength values decreased with increasing GGBFS and stone powder content but remained close to the control mix.
3) Kota stone powder mixes achieved slightly higher strengths than marble stone powder mixes at the 10% and 15% replacement levels, indicating Kota stone powder is a suitable partial sand
COMPARATIVE STUDY ON GREEN CONCRETE WHILE USING RECYCLED AGGREGATES, SILICA F...IRJET Journal
This document presents a study on producing green concrete by partially substituting cement and coarse aggregates with bagasse ash, silica fumes, and recycled concrete aggregates. A literature review found that bagasse ash and silica fumes can improve concrete properties when substituting cement up to 20%, and recycled aggregates can substitute natural aggregates up to 30% without reducing strength. The current study tested concrete mixes with 5-15% replacements of bagasse ash and silica fumes, and 15-45% replacements of recycled aggregates. Test results showed the maximum compressive and split tensile strengths were achieved with 10% bagasse ash, 10% silica fumes, and 30% recycled aggregates.
Evaluation of Performance of Geopolymer Concrete in Acid EnvironmentIRJET Journal
This document evaluates the performance of geopolymer concrete and Portland cement concrete in acid environments. Specimens of both concretes were immersed in 2% sulfuric acid and hydrochloric acid solutions for periods of 28, 56, and 112 days. The weight change and compressive strength of the specimens were measured to analyze their resistance to acid attack. The results showed that geopolymer concrete exhibited higher resistance to both acids compared to Portland cement concrete, with lower weight loss and strength reduction when immersed. Geopolymer concrete therefore has potential for use in acid-prone environments where conventional concrete is vulnerable.
IRJET- Effect of Nano Titanium Dioxide and M-Sand in Self Curing ConcreteIRJET Journal
The document presents research on developing self-curing concrete using nano titanium dioxide (TiO2) and manufactured sand (M-sand). Nano TiO2 and poly-ethylene glycol 600 (PEG 600) were used to improve the compressive strength of self-curing concrete. Concrete cubes were made by replacing cement with 0.5% and 1% nano TiO2 and adding 0.5-2.5% PEG 600. The highest compressive strength of 38.75 N/mm2 was achieved with 1% nano TiO2, 1% PEG 600, and M-sand, compared to conventional concrete cubes and other self-curing mixtures. The experimental results showed that all self-curing concrete cubes
Strength Characterstics of Self Compacting Concrete with Partial Replacement ...IRJET Journal
The document presents the results of an experimental study investigating the strength properties of self-compacting concrete with partial replacement of cement by mineral admixtures and inclusion of polypropylene fibers. Four mixes were tested: a control mix with 100% cement and three mixes with 70% cement replaced with combinations of GGBS, fly ash, and alccofine. Compressive, split tensile, and flexural strengths were tested at 7 and 28 days. Test results showed that mixes with mineral admixtures and polypropylene fibers had higher strengths compared to corresponding mixes without fibers, with compressive strengths increasing up to 10% with fibers.
IRJET-High Volume Replacement of Cement by Ultra-Fine Fly Ash: Performance of...IRJET Journal
This study investigated the use of ultra-fine fly ash (UFFA) to replace cement at high volumes (30-50%) in 1:3 and 1:4.5 mortars. The results showed that significant cement reduction can be achieved while maintaining or improving compressive strength levels. For 1:3 mortar, compressive strength peaked at 40% UFFA replacement, while 1:4.5 mortar peaked at 30% replacement. At 50% replacement, strengths were equal to the control mixes with no replacement. Therefore, high volume UFFA replacement can provide cement reduction and comparable strength performance in mortars.
IRJET- Influence of Coal Tar Epoxy Paint on Concrete Exposed to Sulfate E...IRJET Journal
The document discusses a study on the influence of coal tar epoxy paint on concrete exposed to sulfate exposure. Concrete specimens with and without coal tar epoxy paint coating were exposed to 4% Na2SO4 solution for 12 months. The study found that concrete with coal tar epoxy paint coating showed excellent resistance to sulfate attack compared to uncoated concrete. Even concrete made with pozzolanic materials like fly ash and GGBS showed more damage than concrete with a coal tar epoxy paint surface coating. The coal tar epoxy paint effectively protected the concrete from sulfate ingress and attack.
IRJET- Experimental Study on Durability Characteristics of Poly- Vinyl Alcoho...IRJET Journal
This study experimentally investigates the durability characteristics of concrete with partial replacement of coarse aggregate with polyvinyl alcohol (PVA) treated oil palm shell (OPS). Tests are conducted to determine the water absorption, sorptivity, compressive strength, volume of permeable voids, and salt ponding resistance of normal concrete versus concrete with 10-30% OPS replacement. Results show 30% OPS replacement concrete achieves maximum strength and durability. This concrete demonstrates improved water absorption, voids, and sorptivity over normal concrete, but has higher chloride penetration making it unsuitable for marine structures. Using PVA treated OPS can reduce construction costs due to use of an abundant agricultural waste as aggregate.
EFFECT OF SELF - CURING ON MECHANICAL CHARACTERISTIC OF SELF-COMPACTING CONCR...IAEME Publication
In this Research Study, the Use of Super Absorbent Polymer (SAP) and Polyethylene glycol as Self curing agents in concrete is proven to have many positive effects on the properties of concrete in its both stages; Fresh and hardened concrete. The function of Self- curing agents is to reduce the water evaporation from concrete. The use of Self Curing admixtures is very important from the point of view that saving of water is a necessarily everyday (each one cubic metre of concrete requires 3m3 of water in construction, most of water consumed is for curing, Hence it is necessary to reduce the use of water in construction and save water). The Present research work focuses on use of Polyethylene glycol (PEG) and Super Absorbent Polymer (SAP) as self-curing agents, affect of Self Curing Concrete agents on Mechanical Characteristics Using Msand, and compared with those of conventionally cured concrete. In this Study 0.1%, 0.2% and 0.3% SAP and 1%, 1.5% and 2% PEG was varied for M25 grade of Concrete Mixes and Specimen. The experimental results show that, in general, the combined use of, 1.5%, 0.2% SAP in combination with Fly ash and Silica Fume as mineral admixture showed superior results in comparison to conventional curing method, enhancing the mechanical properties of SCC.
IRJET- Sulphuric Acid Durability Studies of Concrete with Portland Cement (CE...IRJET Journal
This document summarizes a study on the sulphuric acid durability of concrete with different cement types and partial cement replacements. Concrete cubes were made with Portland cement (CEM I), Portland composite cements (CEM II/A-M and CEM II/B-M), and with partial replacements of Portland cement with fly ash and GGBFS. Cubes were submerged in 5% sulphuric acid for 90 days. Results showed concrete with higher Portland cement content was most affected, while CEM II/B-M concrete was most durable. Partial replacements of 25% fly ash and 70% GGBFS showed higher durability against sulphuric acid attack compared to the reference mix.
An Experimental Investigation of Concrete of Partial Replacement of Cement by...IRJET Journal
This document presents the results of an experimental study investigating the effects of partially replacing cement with metakaolin in concrete mixtures. Metakaolin is an industrial byproduct that is produced by calcining kaolin clay. Three concrete mixtures (M20, M25, M30) were tested with metakaolin replacing cement at levels of 5%, 10%, 15%, and 20%. Compressive and split tensile strengths were tested at 7 and 28 days. The results showed that both compressive and tensile strengths generally increased as the level of metakaolin replacement increased up to 15%, with the highest strengths achieved with 15% metakaolin replacement.
IRJET- Effects of Use of Metakaolin and Pond Ash in different Types of ConcreteIRJET Journal
1. The study evaluated the effects of using metakaolin (MK) and pond ash (PA) as partial replacements for cement in different types of concrete.
2. MK was used at 20% replacement and PA at 15% replacement in M25 grade concrete mixes containing ordinary Portland cement (OPC), Portland pozzolana cement (PPC), and rapid hardening cement (RHC).
3. Test results showed that compressive strengths at 7 and 28 days were highest for RHC and RHC with MK concrete, followed by PPC and PPC with MK concrete. PA concrete mixtures performed better than MK concrete mixtures overall.
IRJET- Effect on Steel Slag Concrete using Silica Fume along with FlyashIRJET Journal
This document discusses research into using steel slag, fly ash, and silica fume in concrete mixtures to improve strength and durability. It conducted experiments replacing portions of cement with fly ash or silica fume. Results showed additions of these materials increased strength and reduced porosity of concrete. Mixtures containing equal parts fly ash and silica fume performed best, with compressive strength increasing as replacement amounts rose. The study aims to utilize industrial byproducts like steel slag and improve sustainability of concrete.
Effect of Partial Replacement of Cement by Silica Fume and Sand by Quarry Dus...IRJET Journal
This study investigated the effect of partially replacing cement with silica fume and sand with quarry dust on the strength and durability of concrete. Concrete mixtures were prepared with 8-12% silica fume and 20-40% quarry dust replacements. Testing showed that 10% silica fume and 30% quarry dust replacements increased compressive strength the most at 18.5% over the control mix. This mix also demonstrated the highest durability with the lowest rapid chloride permeability. Workability decreased with higher silica fume and quarry dust content due to their finer particles and higher water absorption. The study concluded that using 10% silica fume and 30% quarry dust provided environmental and economic benefits over
This document discusses the use of granite waste powder as a filler material in self-compacting concrete (SCC). It begins with an introduction to SCC and its benefits over traditional vibrated concrete. The researcher then details their experimental process for developing SCC mixes using different proportions of granite powder, water, cement, coarse aggregate, and fine aggregate. A number of initial trial mixes were produced to determine the optimal mix proportions and flow properties. The compressive strengths of the trial mixes were then tested at 3 and 7 days. Based on the flowability and early strength results, the best performing mixes for each paste volume were selected for further testing of hardened properties like flexural strength, split tensile strength, and density. The results showed
IRJET- An Experimental Investigation on Durability Studies of Concrete by usi...IRJET Journal
The document experimentally investigates the durability of concrete made with different types of cements (OPC, PPC, PSC) when cured under normal water, sea water, acid attack, and sulphate attack. Compressive strength was tested at various ages for concrete specimens made with each cement and cured under each condition. For all curing conditions, PSC concrete exhibited the highest compressive strengths compared to OPC and PPC concrete. Under normal water curing, strengths increased with time for all cements, with PSC reaching 38.92 MPa at 120 days. Sea water curing resulted in lower strengths than normal curing. Acid and sulphate attack reduced strengths compared to other curing
This document presents a proposed method for designing high-strength concrete mixes containing silica fume. The method aims to determine mix proportions that achieve compressive strengths between 41-90 MPa, with maximum aggregate sizes of 14-25 mm and silica fume replacements of 5-15% by weight of cement. The method involves fixing the cementitious material at 520 kg/m3 and determining initial superplasticizer dosages, water-cement ratios, and aggregate contents needed to achieve the target strengths through a series of trial mixtures. Forty-five initial trials were used to establish superplasticizer dosages, followed by additional trials to refine the relationships between water-cement ratio, aggregate size and amount, and achieved compress
IRJET- Experimental Study on Partial Replacement of Cement with Fly Ash and F...IRJET Journal
The document presents the results of an experimental study evaluating the strength characteristics of concrete with partial replacements of cement with fly ash and fine aggregate with steel slag. Concrete cubes were cast with 0%, 10%, 20%, 25%, and 30% replacements and tested after 7 and 28 days of curing. The optimum mix was found to be 0% cement replaced with fly ash and 20% fine aggregate replaced with steel slag, which achieved nearly 10% higher compressive strength than conventional concrete. Replacing more than 20% resulted in lower strengths. The study aims to promote the use of industrial wastes in concrete production to reduce environmental impacts.
IRJET- Influence of Addition of Nano-Silica on Physical and Mechanical Proper...IRJET Journal
This document summarizes research on the influence of adding nano-silica on the physical and mechanical properties of ultra-high performance mortar and concrete. The researcher investigated different mixes with 0.6% nano-silica replacement of cement by weight, using dolomite, crushed granite, or sand aggregates. Specimens were tested for compression, splitting tensile, and flexural strength at ages 2, 7, and 28 days of curing. Optimum results were found for mixes with 0.6% nano-silica and dolomite aggregates. These mixes showed maximum compression and splitting tensile strength as well as minimum absorption at 28 days. The addition of nano-silica was found to improve concrete density and
IRJET- Experimental Investigation of Epoxy Polymer Concrete with Partial Repl...IRJET Journal
This document summarizes an experimental investigation into epoxy polymer concrete with partial replacement of cement by Alccofine. The study aims to evaluate the effectiveness and performance of concrete where OPC cement is replaced with Alccofine 1203. Epoxy resin is added to improve strength and properties, while Alccofine is used to partially replace cement to reduce carbon dioxide emissions. Specimens are tested with different epoxy and Alccofine proportions and their mechanical properties evaluated. Previous studies found that Alccofine improves strength and durability at the 15% replacement level and that combinations of Alccofine and other materials like fly ash can further increase compressive strength.
IRJET- Comparative Study of Alternate Forms of Concrete by Replacing Bric...IRJET Journal
This document presents a study comparing different forms of concrete made by partially replacing traditional aggregates with recycled materials. Brick bats, crushed clay tiles were used to replace up to 40% of coarse aggregate. Lead slag, an industrial byproduct, was used to replace up to 60% of fine aggregate. Cubes were cast and tested at 7, 14, and 28 days to determine compressive strength. Results showed concrete with 30% replacement of coarse aggregate and 30% replacement of fine aggregate achieved near equivalent compressive strengths as traditional concrete. Using these recycled materials provides an economical and environmentally friendly alternative to traditional concrete mixes.
IRJET- Utilization of Red Mud to Improve the Strength of Self Compacting Conc...IRJET Journal
This study summarizes the results of an experimental investigation into the properties of self-compacting concrete containing red mud and fly ash. Red mud was substituted for cement by weight in proportions from 0% to 15% while fly ash content was kept at 20% of total powder. Tests were performed to evaluate fresh and hardened properties. Fresh properties like slump flow, V-funnel time and passing ability were within specified limits up to 10% red mud substitution. Compressive strength initially increased up to 7.5% red mud but then decreased with further addition, showing red mud can partially replace cement in self-compacting concrete.
IRJET- A Experimental Investigation on Concrete Containing GGBFS with Kota St...IRJET Journal
1) The study investigates the use of Ground Granulated Blast Furnace Slag (GGBFS) as a partial cement replacement at 30% and 40% levels, and the use of Kota stone powder or marble stone powder to partially replace fine aggregate at 10% and 15% levels.
2) Concrete mixes were tested for compressive strength, flexural strength, and splitting tensile strength at 28 days. Results showed strength values decreased with increasing GGBFS and stone powder content but remained close to the control mix.
3) Kota stone powder mixes achieved slightly higher strengths than marble stone powder mixes at the 10% and 15% replacement levels, indicating Kota stone powder is a suitable partial sand
COMPARATIVE STUDY ON GREEN CONCRETE WHILE USING RECYCLED AGGREGATES, SILICA F...IRJET Journal
This document presents a study on producing green concrete by partially substituting cement and coarse aggregates with bagasse ash, silica fumes, and recycled concrete aggregates. A literature review found that bagasse ash and silica fumes can improve concrete properties when substituting cement up to 20%, and recycled aggregates can substitute natural aggregates up to 30% without reducing strength. The current study tested concrete mixes with 5-15% replacements of bagasse ash and silica fumes, and 15-45% replacements of recycled aggregates. Test results showed the maximum compressive and split tensile strengths were achieved with 10% bagasse ash, 10% silica fumes, and 30% recycled aggregates.
“STUDY ON STRENGTH OF CONCRETE BY PARTIALLY REPLACEMENT OF CEMENT WITH METAKA...IRJET Journal
This study evaluated the strength and durability of concrete with partial replacements of cement by metakaolin, calcium carbide residue (CCR), and fly ash. Several concrete mixes were prepared with the materials replacing cement at levels of 5%, 10%, and 15%. Compressive strengths were tested at 7 and 28 days. Samples were also immersed in 5% sulfuric acid and hydrochloric acid solutions for 28 days, and compressive strength loss was observed. Results showed concrete with a 15% CCR and 20% metakaolin combination provided strength similar to the control mix. Compressive strength generally decreased with higher CCR replacement levels. Replacing 5-10% of cement with fly ash reduced compressive strength by
EXPERIMENTAL STUDY ON THE BEHAVIOR OFCONCRETE BY REPLACEMENT OF FINE AGGREGAT...IRJET Journal
- The document presents the results of an experimental study evaluating the effects of replacing fine aggregate with granite powder and cement with Alccofine-1203 on the properties of concrete.
- Testing found that replacing 15% of cement with Alccofine-1203 and 15% of fine aggregate with granite powder (mixture K3) increased the compressive strength of the concrete by 32% at 7 days, 34% at 14 days, and 42% at 28 days compared to normal concrete.
- Mixture K3 also increased the tensile and flexural strengths of the concrete the most compared to other mixtures tested at 7, 14, and 28 days.
A COMPARATIVE STUDY ON STRENGTH ASPECTS OF HD PET THERMOPLASTIC WITH METAKAOL...IRJET Journal
This document summarizes a study that evaluated the strength properties of concrete with partial replacements of cement with metakaolin or ground granulated blast furnace slag (GGBS), and partial replacement of fine aggregate with high density polyethylene terephthalate (HD PET) thermoplastics. Several mix designs were tested with metakaolin or GGBS replacing 5%, 10%, and 15% of cement by weight, and HD PET thermoplastics replacing 5% and 10% of fine aggregate by weight. The compressive strength and flexural strength of the concrete mixtures were tested at 28 days. Previous studies on similar partial replacements are also summarized. The results of this study aim to determine the variation in strength properties based on the replacement levels
Comparative Study of Concrete by Using Glass Powder and Coconut Shell Ash by ...IRJET Journal
The document presents a comparative study on the use of glass powder and coconut shell ash as partial replacements for cement in concrete. More than 108 concrete specimens were prepared with 0-12.5% replacements to study the effect on properties. Testing showed compressive strength initially increased up to a 10% replacement before decreasing, while split tensile and flexural strengths increased up to a 7.5% replacement. The study concluded coconut shell ash and glass powder can partially replace cement at 10% for compressive strength and 7.5% for other properties to provide an eco-friendly and sustainable use of waste materials in concrete construction.
IRJET- Strength of Geopolymer Concrete Reinforced with Basalt FibreIRJET Journal
This document summarizes research on the strength properties of geopolymer concrete reinforced with basalt fibers. Geopolymer concrete is an environmentally friendly alternative to traditional concrete that uses industrial byproducts like fly ash and slag instead of cement. The study investigated the compressive, tensile, and flexural strengths of geopolymer concrete mixes containing varying ratios of fly ash and slag, with the addition of 0-0.5% basalt fibers by volume. Test results found that the optimal mix was 90% fly ash and 10% slag, and that adding 0.2% basalt fibers increased the concrete's strength in all areas tested compared to plain geopolymer concrete. Fiber reinforcement improved compressive strength by 60-
IRJET- Experimental Investigation on Brick with Partially Replacement of ...IRJET Journal
The document experimentally investigates partially replacing cement with corn cob ash in brick production to reduce costs and environmental impacts. Various mixtures of cement, corn cob ash, and sand were tested at replacement rates of 50%, 60%, and 70%, and the compressive strengths were tested at 7, 14, and 28 days of curing. Results showed that replacement rates of 50-60% corn cob ash provided adequate compressive strength while lowering costs, making it a viable and more sustainable partial cement replacement.
IRJET- Experimental Investigation on Brick with Partially Replacement of Ceme...IRJET Journal
The document experimentally investigates partially replacing cement with corn cob ash in brick production to reduce costs and environmental impacts. Various mixtures of cement, corn cob ash, and sand were tested at replacement rates of 50%, 60%, and 70%, and the compressive strengths were tested at 7, 14, and 28 days of curing. Results showed that replacement rates of 50-60% corn cob ash provided adequate compressive strength while lowering costs compared to traditional cement bricks.
IRJET- Experimental Study on Strength Assessment of Fly Ash Based Geopolymer ...IRJET Journal
This document presents an experimental study on the strength of fly ash-based geopolymer matrices with the addition of ground granulated blast furnace slag (GGBS). Different mixes were tested with varying ratios of fly ash to GGBS. The compressive strength was highest at 28 days for a mix with 20% fly ash and 80% GGBS, reaching 21.35 MPa. Heat curing at 80°C was found to significantly increase the strength compared to ambient curing. The addition of GGBS was found to improve the early strength and compressive strength of the geopolymer mixes. Microstructural analysis showed that GGBS addition led to increased connectivity between aggregates and the geopolymer gel.
IRJET- An Experimental Study on Strength of Concrete by using Partial Replace...IRJET Journal
This document presents the results of an experimental study on the strength of concrete with partial replacements of cement with coconut shell ash and coarse aggregate with coconut shell. M30 grade concrete was prepared with 10%, 15%, and 20% replacements. Cement was replaced with coconut shell ash, and coarse aggregate was replaced with crushed coconut shell. Compressive strength, split tensile strength, and corrosion resistance tests were performed on cubes and cylinders at 7, 14, and 28 days. The results showed that 15% replacement of cement with coconut shell ash and coarse aggregate with coconut shell produced the required compressive and split tensile strengths for light weight concrete. Using these agricultural waste materials provided strength while reducing costs and waste.
IRJET- Study on the Physical Properties of Concrete Prepared with Partial...IRJET Journal
This document summarizes a study on the physical properties of concrete prepared with partial replacement of cement by waste materials such as alccofine, GGBS, and meta-kaoline. The study found that replacing cement with:
1) Alccofine up to 10% increased compressive strength but strength started reducing after 10% replacement.
2) GGBS up to 15% increased compressive strength but strength started reducing after 15% replacement.
3) Meta-kaoline up to 10% increased compressive strength but strength started reducing after 10% replacement.
The study concluded that these waste materials can partially replace cement in concrete up to certain thresholds to increase strength, but replacing beyond
IRJET-Experimental Study on Corn Cob Ash Powder as Partial Replacement of Cem...IRJET Journal
1) The study experimentally evaluates using corn cob ash (CCA) as a partial replacement for cement in concrete. Various percentages (0%, 10%, 20%, 30%) of CCA replacement were tested.
2) Results showed that compressive, flexural, and split tensile strengths were initially lower for CCA concrete but surpassed the control concrete at later ages, indicating the pozzolanic effect of CCA over time.
3) The 10% CCA replacement mixture achieved higher strengths at 90 days compared to the control, suggesting 10% CCA is a suitable partial replacement for cement.
EXPERIMENTAL STUDIES ON CONCRETE USING BASALT FIBER AS ADDITIVE AND PARTIAL R...IRJET Journal
The document summarizes an experimental study on using basalt fiber and Alccofine (a micro fine material) as additives to partially replace cement in concrete. Tests were conducted to determine the workability, compressive strength, flexural strength, and split tensile strength of concrete mixtures containing 2% basalt fiber and 5-25% replacement of cement with Alccofine. Results showed that workability increased with the additions. Compressive, flexural, and split tensile strengths generally increased up to 10-15% cement replacement by Alccofine compared to conventional concrete, but decreased with 25% replacement. The study concluded that basalt fiber and Alccofine up to 15% can be used
Experimental Study on concrete containing Fly ashIRJET Journal
This document summarizes an experimental study on the use of fly ash as a partial replacement for cement in concrete. Fly ash is a byproduct of coal combustion that can be used to reduce the environmental impacts of coal use and lower the cost of concrete production. The study tested concrete mixtures where cement was replaced with fly ash at levels of 0%, 5%, 10%, 15%, and 20% by weight. The compressive strength of concrete cubes was tested at 7 and 28 days. The results showed that compressive strength generally increased as the level of fly ash replacement increased up to 20%, indicating that fly ash can improve concrete strength properties while providing environmental and economic benefits.
Experimental Analysis Using Egg Shell Powder as a partial alternative for CementIRJET Journal
This document presents the results of an experimental study analyzing the use of egg shell powder (ESP) as a partial replacement for cement in concrete. ESP was used to replace 0-20% of the cement by weight in increments of 5%. Concrete mixtures were tested for properties including compressive strength, density, and cost. Results showed that replacing cement with ESP reduced the density and initial compressive strength of the concrete. However, adding an admixture improved the 7-day and 28-day compressive strengths even with ESP replacements up to 15%. Replacing 10% of cement with ESP and an admixture produced concrete with comparable strength to normal concrete at a similar cost, demonstrating the potential of ESP as a sustainable cement replacement.
IRJET- Comparative Analysis of Micro-Silica and Ultrafine Fly Ash in High Gra...IRJET Journal
1) The document presents a comparative analysis of using micro-silica and ultrafine fly ash in high-strength concrete mixtures to improve workability and compressive strength while optimizing costs.
2) Five concrete mix designs were tested with varying amounts of micro-silica and ultrafine fly ash as supplementary cementitious materials. Workability tests and compressive strength tests at various ages were performed.
3) The results showed that mixes containing 50kg of micro-silica or ultrafine fly ash achieved the highest early strengths but were not the most cost-effective. The mix with 40kg of micro-silica met strength requirements and had a lower cost than the original mix design.
THE EFFECT OF GLASS FIBER ON FLY ASH BASED GEOPOLYMER CONCRETE USING RECYCLED...IRJET Journal
This document summarizes a study on the effect of adding glass fibers to fly ash-based geopolymer concrete that uses recycled aggregates. The researchers tested geopolymer concretes made with 50%, 80%, and 100% recycled coarse aggregates as partial replacements for natural coarse aggregates. Glass fibers ranging from 0.5-3.5% by weight were added to determine their effect on compressive strength. The results showed that up to 2.5% glass fiber improved compressive strength, but more than 2.5% did not provide further gains. Recycled aggregates reduced compressive, tensile, and flexural strengths compared to natural aggregates, but the lower shrinkage of geopolymer concrete compensated for the higher shrink
An Investigation on the Effect of Partial Replacement of Cement by Zeolite on...IRJET Journal
This document investigates the effect of partially replacing cement with zeolite on concrete properties. Zeolite is a natural pozzolanic material that can absorb carbon dioxide and reduce air pollution. Concrete cubes with 0-35% cement replaced by zeolite were tested. Results showed that replacing 5% cement with zeolite increased compressive strength by 32.9% and reduced water absorption and sorptivity, indicating improved impermeability. However, workability decreased with higher zeolite content. In conclusion, 5% cement replacement produced concrete with optimal properties such as high strength and low permeability.
IRJET- Experimental Investigation on Sugarcane Bagasse Ash and GGBS in Co...IRJET Journal
This study experimentally investigates the impact of partially replacing cement with sugarcane bagasse ash (SCBA) and ground granulated blast furnace slag (GGBS) in concrete. Cubes, cylinders, and prisms were cast with 0%, 10%, and 20% replacements of cement with SCBA and GGBS. The specimens were tested after 7 and 28 days to determine their compression, split tensile, and flexural strengths. The results showed that concrete with 10-20% replacements had higher strengths compared to normal concrete without replacements. Additionally, the workability of concrete increased with higher SCBA and GGBS content replacements. Therefore, partially replacing cement with these waste materials improves the properties and reduces the cost of
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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
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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
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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
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A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
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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.
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P.E.B. Framed Structure Design and Analysis Using STAAD ProIRJET Journal
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React based fullstack edtech web applicationIRJET Journal
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A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...IRJET Journal
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Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
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Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...IRJET Journal
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The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
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exchange. Facilitators for integration include cost reduction initiatives and interoperability policies.
Technologies like IoT, Big Data, AI, Machine Learning, and robotics enhance diagnostics, treatment
precision, and real-time monitoring, reducing errors and optimizing resource utilization. Automation
improves employee satisfaction and patient care, while Blockchain and telemedicine drive cost reductions.
Successful integration requires skilled professionals and supportive policies, promising efficient resource
use, lower error rates, and accelerated processes, leading to optimized global healthcare outcomes.
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.
Literature Review Basics and Understanding Reference Management.pptxDr Ramhari Poudyal
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
Batteries -Introduction – Types of Batteries – discharging and charging of battery - characteristics of battery –battery rating- various tests on battery- – Primary battery: silver button cell- Secondary battery :Ni-Cd battery-modern battery: lithium ion battery-maintenance of batteries-choices of batteries for electric vehicle applications.
Fuel Cells: Introduction- importance and classification of fuel cells - description, principle, components, applications of fuel cells: H2-O2 fuel cell, alkaline fuel cell, molten carbonate fuel cell and direct methanol fuel cells.
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.