Experimental Investigation On Properties Of Self-Compacting And Self Curing Concrete, Replacing Natural Sand By Quarry Dust Using Light Weight Aggregate And Silica Fume As Mineral Admixture For M-40 Grade Concrete
This document presents an experimental study on self-compacting and self-curing concrete using quarry dust to replace natural sand, light weight aggregate, and silica fume. Tests were conducted on concrete cubes to evaluate the compressive strength at 7, 28, and 56 days of curing. The results show that replacing up to 20% of sand with quarry dust and using 10-15% light weight aggregate and silica fume improved the compressive strength compared to normal self-compacting concrete. The self-curing concrete achieved strengths similar to concrete cured through normal water curing. The study concludes it is feasible to produce lightweight, self-compacting self-curing concrete using local materials for construction applications
Experimental Investigation on Self Compacting Concrete with Replacement of Na...IRJET Journal
The document experimentally investigates self-compacting concrete with the replacement of natural sand by robosand and coarse aggregate by cinder for M30 grade concrete. The study aims to determine the suitable percentage replacements that provide good fresh and hardened concrete properties. Natural sand is replaced by robosand at 25% and 30% while coarse aggregate is replaced by cinder at 0%, 10%, 20%, 30%, 40%, and 50%. Test results show that compressive strength is highest at 40% cinder replacement for 25% robosand replacement, and split tensile strength is highest at 40% cinder replacement for 30% robosand replacement. The fresh concrete shows good flowability while the hardened concrete strengths are up to 23% higher than normal
Analysis of M25 Grade of Self-Healing Concrete by Partial Replacement of Coar...IRJET Journal
This document analyzes the use of e-waste as a partial replacement for coarse aggregate in M25 grade self-healing concrete. ABS plastic from e-waste was used to replace coarse aggregate at percentages from 5-25%. Calcium lactate was also added at levels of 0.5-1% as a nutrient for bacteria. Samples were tested for compressive, tensile, and flexural strength at 7 and 28 days. The 15% ABS plastic and 1% calcium lactate mixture achieved the highest compressive strength of 21.74 MPa at 7 days and 33.62 MPa at 28 days, indicating e-waste can partially replace coarse aggregate without significantly reducing concrete strength if proper proportions are used.
IRJET- Experimental Study on Strength Properties of Concrete by Partial Repla...IRJET Journal
1) The document experimentally studied the strength properties of concrete with partial replacement of cement by metakaolin and fine aggregate by manufactured sand (robo sand) for M30 grade concrete.
2) Results showed that concrete with 5% cement replaced by metakaolin and 50% fine aggregate replaced by robo sand achieved 25.42%, 18.37%, 17.22% and 13.12% higher compressive, split tensile, shear and flexural strengths respectively compared to conventional concrete at 28 days.
3) Metakaolin is a pozzolanic material that improves strength and durability of concrete by filling pores and reducing permeability, while use of robo sand as a replacement for natural sand addresses shortage
Study of Recycled Aggregate Concrete Containing Silica Fume as Partial Replac...IRJET Journal
This document studies recycled aggregate concrete containing silica fume as a partial replacement for cement. Various percentages of recycled aggregate were used to replace natural aggregate in concrete mixes, from 0% to 50%. Mechanical properties such as compressive and tensile strength were tested. The results showed that replacing up to 30% of natural aggregate with recycled aggregate can achieve similar strength as conventional concrete. Above 30% replacement, strength tends to decrease. The materials used in the concrete mixes included grade 43 cement, natural and recycled coarse aggregates of different sizes, river sand, silica fume, and water.
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
IRJET - Experimental Study of Replacement of Ceramic Waste in Paver BlocksIRJET Journal
This study experimentally evaluated replacing ceramic waste as coarse aggregate in paver blocks. Ceramic waste from industries cannot be recycled and comprises 30% of total waste. Paver blocks were produced by replacing conventional coarse aggregate with 15%, 25%, 35%, and 45% ceramic waste by weight. Tests on compressive strength, impact strength, and water absorption were conducted on samples at 7, 14, and 28 days. Results showed compressive strength decreased with higher ceramic waste content but addition of silica fume and coconut fiber helped increase strength over time. Visual inspection found no cracks or flaws, indicating ceramic waste can successfully be used partially in paver blocks for effective waste recycling and utilization.
A Study on Properties of Self Compacting Concrete with Slag as Coarse AggregateIRJET Journal
This document presents a study on the properties of self-compacting concrete using blast furnace slag as a coarse aggregate replacement. The study aims to determine the strength characteristics of slag for application in self-compacting concrete. Specimens with 0%, 10%, 20%, 40%, and 60% replacement of natural coarse aggregate with slag aggregate were produced and tested. Workability, compressive strength, and split tensile strength tests were conducted on the specimens. The results were then compared to code requirements to evaluate the performance of self-compacting concrete with slag aggregate replacement.
IRJET- Use of Plastic Waste as a Partial Replacement of Aggregate in Paver Bl...IRJET Journal
This document summarizes research into using plastic waste as a partial replacement for aggregate in paver blocks. Tests were conducted replacing coarse aggregate in an M20 concrete mix with 0%, 2%, 2.5%, 3%, 3.5%, 4%, 8% and 10% plastic by weight. Paver blocks were cast and tested for compressive strength at 7, 14, and 21 days. Results found compressive strength was highest for mixes with 2.5%, 3% and 4% plastic replacement and lowest for 10% replacement. The study concludes plastic waste can partially replace aggregate in paver blocks while maintaining adequate compressive strength.
Experimental Investigation on Self Compacting Concrete with Replacement of Na...IRJET Journal
The document experimentally investigates self-compacting concrete with the replacement of natural sand by robosand and coarse aggregate by cinder for M30 grade concrete. The study aims to determine the suitable percentage replacements that provide good fresh and hardened concrete properties. Natural sand is replaced by robosand at 25% and 30% while coarse aggregate is replaced by cinder at 0%, 10%, 20%, 30%, 40%, and 50%. Test results show that compressive strength is highest at 40% cinder replacement for 25% robosand replacement, and split tensile strength is highest at 40% cinder replacement for 30% robosand replacement. The fresh concrete shows good flowability while the hardened concrete strengths are up to 23% higher than normal
Analysis of M25 Grade of Self-Healing Concrete by Partial Replacement of Coar...IRJET Journal
This document analyzes the use of e-waste as a partial replacement for coarse aggregate in M25 grade self-healing concrete. ABS plastic from e-waste was used to replace coarse aggregate at percentages from 5-25%. Calcium lactate was also added at levels of 0.5-1% as a nutrient for bacteria. Samples were tested for compressive, tensile, and flexural strength at 7 and 28 days. The 15% ABS plastic and 1% calcium lactate mixture achieved the highest compressive strength of 21.74 MPa at 7 days and 33.62 MPa at 28 days, indicating e-waste can partially replace coarse aggregate without significantly reducing concrete strength if proper proportions are used.
IRJET- Experimental Study on Strength Properties of Concrete by Partial Repla...IRJET Journal
1) The document experimentally studied the strength properties of concrete with partial replacement of cement by metakaolin and fine aggregate by manufactured sand (robo sand) for M30 grade concrete.
2) Results showed that concrete with 5% cement replaced by metakaolin and 50% fine aggregate replaced by robo sand achieved 25.42%, 18.37%, 17.22% and 13.12% higher compressive, split tensile, shear and flexural strengths respectively compared to conventional concrete at 28 days.
3) Metakaolin is a pozzolanic material that improves strength and durability of concrete by filling pores and reducing permeability, while use of robo sand as a replacement for natural sand addresses shortage
Study of Recycled Aggregate Concrete Containing Silica Fume as Partial Replac...IRJET Journal
This document studies recycled aggregate concrete containing silica fume as a partial replacement for cement. Various percentages of recycled aggregate were used to replace natural aggregate in concrete mixes, from 0% to 50%. Mechanical properties such as compressive and tensile strength were tested. The results showed that replacing up to 30% of natural aggregate with recycled aggregate can achieve similar strength as conventional concrete. Above 30% replacement, strength tends to decrease. The materials used in the concrete mixes included grade 43 cement, natural and recycled coarse aggregates of different sizes, river sand, silica fume, and water.
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
IRJET - Experimental Study of Replacement of Ceramic Waste in Paver BlocksIRJET Journal
This study experimentally evaluated replacing ceramic waste as coarse aggregate in paver blocks. Ceramic waste from industries cannot be recycled and comprises 30% of total waste. Paver blocks were produced by replacing conventional coarse aggregate with 15%, 25%, 35%, and 45% ceramic waste by weight. Tests on compressive strength, impact strength, and water absorption were conducted on samples at 7, 14, and 28 days. Results showed compressive strength decreased with higher ceramic waste content but addition of silica fume and coconut fiber helped increase strength over time. Visual inspection found no cracks or flaws, indicating ceramic waste can successfully be used partially in paver blocks for effective waste recycling and utilization.
A Study on Properties of Self Compacting Concrete with Slag as Coarse AggregateIRJET Journal
This document presents a study on the properties of self-compacting concrete using blast furnace slag as a coarse aggregate replacement. The study aims to determine the strength characteristics of slag for application in self-compacting concrete. Specimens with 0%, 10%, 20%, 40%, and 60% replacement of natural coarse aggregate with slag aggregate were produced and tested. Workability, compressive strength, and split tensile strength tests were conducted on the specimens. The results were then compared to code requirements to evaluate the performance of self-compacting concrete with slag aggregate replacement.
IRJET- Use of Plastic Waste as a Partial Replacement of Aggregate in Paver Bl...IRJET Journal
This document summarizes research into using plastic waste as a partial replacement for aggregate in paver blocks. Tests were conducted replacing coarse aggregate in an M20 concrete mix with 0%, 2%, 2.5%, 3%, 3.5%, 4%, 8% and 10% plastic by weight. Paver blocks were cast and tested for compressive strength at 7, 14, and 21 days. Results found compressive strength was highest for mixes with 2.5%, 3% and 4% plastic replacement and lowest for 10% replacement. The study concludes plastic waste can partially replace aggregate in paver blocks while maintaining adequate compressive strength.
Study on Rheological & Mechanical Properties of SCM using Mineral Admixture a...IRJET Journal
This document presents a study on the rheological and mechanical properties of self-compacting mortar (SCM) using mineral admixtures as a partial replacement for cement. Ternary and quaternary SCM mixes were developed with different percentages of fly ash, metakaolin, and silica fume replacing cement. Fresh properties were evaluated using mini slump and mini V-funnel tests. Hardened properties of compressive and flexural strength were determined after 7, 14, and 28 days of curing. The results showed that ternary mixes with 20% fly ash and 10% metakaolin (M1.2) and 10% metakaolin and 5% silica fume, as
IRJET- Experimental Investigation of Self Compacting Concrete by Partially Re...IRJET Journal
This document experimentally investigates the use of quartz sand and recron fiber as partial replacements for fine aggregate in self-compacting concrete. Various mixes were prepared with different replacement levels of fine aggregate with quartz sand (25%, 50%, 75%, 100%) and additions of recron fiber (0.25%, 0.50%, 0.75%, 1%). The fresh and hardened properties of the concrete were then tested, including slump flow, compressive strength, and durability. The results aim to determine the effectiveness of quartz sand and recron fiber in self-compacting concrete.
EXPERIMENTAL INVESTIGATION OF CONCRETE BY PARTIAL REPLACEMENT OF FINE AGGREGA...IRJET Journal
This document presents an experimental investigation on the effect of partial replacement of fine aggregate with ground granulated blast furnace slag (GGBS) and sheet glass powder (SGP) in concrete. Various concrete mixes were prepared by replacing fine aggregate with 10%, 15%, 20%, and 25% of GGBS and SGP. The compressive, split tensile, and flexural strengths of the concrete cubes, cylinders, and beams were tested at curing periods of 7, 14, and 28 days. The results showed that compressive and split tensile strengths increased at replacement levels of 10-15% but started decreasing at 25% replacement. Flexural strength was highest at 10% replacement and decreased with further replacement. Thus,
This document provides a review of self-compacting concrete (SCC). SCC is concrete that can flow and fill formwork without vibration or compaction due to its high deformability, stability, and resistance to blockage. The review discusses the properties and requirements of SCC, including its ability to flow around reinforcement without segregating. It also examines various studies on using additives like steel fibers and fly ash to improve the strength and qualities of SCC. The conclusion is that SCC has proven itself as an innovative concrete technology, and further research is needed to improve its sensitivity to ingredient and environmental variations.
IRJET- An Experimental Study on Strength of Concrete with Partial Replacement...IRJET Journal
This document presents an experimental study on using copper slag and quarry dust as partial replacements for fine aggregate in concrete. Various concrete mixes were tested with copper slag and quarry dust replacements ranging from 0-45%. Specimens were cured for 7-28 days and tested for compressive, split tensile, and flexural strengths. The results showed that concrete with a 40% fine aggregate replacement achieved the highest compressive strength of 41.87 MPa. Split tensile strengths were also higher than the control mix for replacements up to 15%. Thus, the study demonstrates that using industrial wastes like copper slag and quarry dust as partial replacements for fine aggregate in concrete can improve strength properties while providing environmental and economic benefits.
Strength and Durability Properties of Self-Compacting Concrete With Micro Sil...IRJET Journal
This study investigated the strength and durability properties of self-compacting concrete with micro silica and nano silica. Tests were conducted on concrete mixtures with 0-20% micro silica and 0-4% nano silica replacements. Results showed that a combination of 15% micro silica and 3% nano silica increased the compressive strength by 25.61%, split tensile strength by 25%, and flexural strength by 19% compared to normal self-compacting concrete. This combination also improved properties like saturated water absorption, sulfate resistance, and acid resistance. In conclusion, a combination of micro silica and nano silica provided the best performance for strength and durability in self-compacting concrete.
IRJET-Strength and Durability Properties of Self-Compacting Concrete With Mic...IRJET Journal
This study evaluated the strength and durability properties of self-compacting concrete containing micro silica and nano silica. Testing showed that replacing 15% of cement with micro silica and adding 3 liters of nano silica improved the compressive strength, split tensile strength, and flexural strength by 25.61%, 25%, and 19% respectively compared to plain self-compacting concrete. Additionally, the saturated water absorption, sulfate resistance, and acid resistance of the concrete were enhanced with the addition of micro and nano silica. The results indicate that a combination of micro silica and nano silica provides the best performance for strength and durability in self-compacting concrete.
Study On Partial Replacement Of Fine Aggregates In Concrete By Recycled Concr...IRJET Journal
The document studies the effect of partially replacing fine aggregates in concrete with recycled concrete aggregates (RCA). Concrete mixtures were developed with 0-30% replacement of fine aggregates with RCA at 5% intervals. Testing showed workability decreased with higher RCA content due to higher water absorption. Compressive, tensile, and flexural strength generally increased up to 15% RCA replacement compared to conventional concrete, with 25% replacement also showing satisfactory results. The optimum RCA replacement was found to be 25% based on the experimental results.
IRJET- Experimental Research on the Behavior of Concrete using MICA as Pa...IRJET Journal
This document summarizes an experimental research study that investigated using mica as a partial replacement for fine aggregates in mortar and concrete. The study tested different replacement percentages of mica from 1% to 5% by weight. The chemical composition and physical properties of the materials used were analyzed. Mortar specimens with different mica replacements were tested for compressive and tensile strength at various ages. Concrete mixes using mica replacements were also tested for slump, air content, and compressive strength. The results showed that mica replacements up to 2% can achieve standard mortar strengths but higher replacements reduce strength.
Experimental Study on Effect of Wood Ash on Strength of ConcreteIRJET Journal
This study investigated the effect of wood ash as a partial replacement for cement in concrete. Concrete cubes were made with 0%, 10%, 20%, 30%, and 40% replacements of cement with wood ash by weight. The cubes were tested for compressive strength at 7 and 28 days. Results showed that compressive strength initially decreased with higher wood ash content but improved significantly after 28 days. The 20% wood ash mix performed best, showing improvements in compressive strength over normal concrete at 28 days. It was concluded that 20% is the optimum wood ash replacement amount to gain strength benefits while using less cement.
IRJET- Experimental Investigation on Self Compacting Concrete by Replacing Na...IRJET Journal
This document presents an experimental investigation on the use of artificial sand to replace natural sand in self-compacting concrete. Self-compacting concrete is able to flow and fill formwork without vibration. Due to increasing demand and decreasing availability of natural sand, artificial sand produced from crushing rocks is a potential substitute. The study examines the effects of replacing natural sand with 0%, 25%, 50%, 75%, and 100% artificial sand on the compressive strength and workability of self-compacting concrete over curing periods of 7, 14, and 28 days. Tests are conducted on fresh and hardened concrete to evaluate properties like slump flow, passing ability, and compressive strength. The results are analyzed to understand how artificial sand substitution impacts
EXPERIMENTAL INVESTIGATION ON STRENGTH OF CONCRETE BY USING NANO- SILICA AND ...IRJET Journal
- The document experimentally investigates the strength of concrete when cement is partially replaced by nano-silica and fly ash.
- Testing was done on concrete cubes with cement replaced 20-30% by fly ash and 1.5-4.5% by nano-silica. The highest compressive strength was achieved with 20% fly ash and 3% nano-silica replacement.
- Results showed that up to 3% nano-silica replacement, compressive strength initially increased then decreased with further nano-silica for a given fly ash content. Replacing over 30% cement with fly ash decreased strength below the control mix.
Use of Silica Fume in Concrete Partially Replacement By Cement” -A REVIEWIRJET Journal
This document summarizes research into using silica fume as a partial replacement for cement in concrete. Silica fume is a byproduct of silicon production that can improve the mechanical and durability properties of concrete. The study involved casting concrete cubes, beams, and cylinders with 0-20% replacements of cement with silica fume. Testing at 7, 14, and 28 days found that compressive, tensile, and flexural strength peaked at a 15% replacement, with higher replacements reducing strength. The results indicate that silica fume can increase concrete strength when used as a partial cement replacement up to 15%.
Effect of Nano-Silica and Metakaolin on Properties of Recycled Coarse Aggrega...IRJET Journal
The document discusses a study on the effect of nano-silica and metakaolin on the properties of recycled coarse aggregate concrete. Concrete samples were produced with partial replacement of natural coarse aggregate at levels of 25%, 50%, 75% and 100% with recycled coarse aggregate. Cement was also partially replaced with metakaolin at 10%, 15% and 20% and with nano-silica at 1%, 2% and 3%. Test results showed that compressive strength was highest (29.35% more than normal concrete) when cement was replaced with 15% metakaolin and 2% nano-silica, and coarse aggregate was replaced at 50% with recycled aggregate. The strength characteristics improved significantly at these optimum replacement levels of
Experimental Investigation on SCM using Different AdmixturesIRJET Journal
The document experimentally investigates self-compacting mortar (SCM) containing various mineral admixtures like GGBS, metakaolin, and silica fume. 15 SCM mixes were developed with different ratios of these admixtures as partial replacements for cement. The fresh and hardened properties of the mixes were tested. For fresh properties, mini slump flow and mini V-funnel tests were conducted. For hardened properties, compressive strength, flexural strength, and drying shrinkage tests were performed at various ages. The test results showed that while the mineral admixtures required more water and superplasticizer to achieve similar workability to the reference mix, the SCM mixes met flowability and stability requirements. The
IRJET- CharactCharacteristic Study on Behaviour of Integral Crystalline Water...IRJET Journal
This document discusses the use of integral crystalline waterproofing concrete where cement is partially replaced with fly ash, GGBS, silica fume, or rice husk ash along with the addition of a crystalline waterproofing agent. Compressive strength tests were performed on concrete cubes at 7, 14, and 28 days that used each replacement material at different percentages along with 2% crystalline waterproofing agent. The results showed that concrete with 10% fly ash replacement and 2% crystalline waterproofing agent had the lowest 28-day compressive strength, while concrete with 20% GGBS replacement and 2% crystalline waterproofing agent had the highest 28-day compressive strength. In conclusion, the addition of crystalline
IRJET- Durability Study on Behaviour of Integral Crystalline Water Proofing C...IRJET Journal
1) The document discusses the use of integral crystalline waterproofing concrete to improve the durability and water resistance of concrete structures.
2) Crystalline waterproofing agents are added to concrete to form crystals that fill pores, cracks and capillaries, blocking the movement of water through the concrete and making it waterproof from the inside.
3) Tests were conducted using different partial replacements of cement with fly ash, silica fume, ground granulated blast furnace slag and rice husk ash, along with a 2% addition of crystalline waterproofing agent. The compressive strengths at 7, 14 and 28 days were analyzed to evaluate the performance of the integral waterproofing concrete mixes.
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 Investigation on No-Fines Concrete with Tyre as a Partia...IRJET Journal
This document summarizes an experimental investigation on no-fines concrete with tire rubber as a partial replacement for coarse aggregate and sodium silicate as an admixture. No-fines concrete is a lightweight concrete that does not contain fine aggregates. The study aims to determine the optimum mix of no-fines concrete for partial replacement of coarse aggregate with tire rubber based on compressive, split tensile, and flexural strength testing. Various mix designs were tested where coarse aggregate was replaced by tire rubber at rates of 2.5%, 5%, and 7.5% by weight. The specimens were tested after 7, 14, and 28 days of curing and results were compared to conventional no-fines concrete. The results showed
Study of Mechanical Properties of Lightweight Aggregate Concrete by using Pum...IRJET Journal
This document studies the mechanical properties of lightweight aggregate concrete made with pumice stone, ceramic tiles, and cellular lightweight concrete (CLC) bricks as partial replacements for normal coarse and fine aggregates. Pumice stone, ceramic tiles, and CLC bricks are all lightweight materials that are used to replace aggregates at rates of 10%, 20%, and 30%. Specimens including cubes, cylinders, and prisms are cast and tested at curing periods of 7, 14, and 28 days to evaluate properties like compressive strength and flexural strength. The goal is to develop an improved lightweight concrete that maintains structural integrity while reducing self-weight through the use of these alternative aggregates.
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
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- The document experimentally investigates the strength of concrete when cement is partially replaced by nano-silica and fly ash.
- Testing was done on concrete cubes with cement replaced 20-30% by fly ash and 1.5-4.5% by nano-silica. The highest compressive strength was achieved with 20% fly ash and 3% nano-silica replacement.
- Results showed that up to 3% nano-silica replacement, compressive strength initially increased then decreased with further nano-silica for a given fly ash content. Replacing over 30% cement with fly ash decreased strength below the control mix.
Use of Silica Fume in Concrete Partially Replacement By Cement” -A REVIEWIRJET Journal
This document summarizes research into using silica fume as a partial replacement for cement in concrete. Silica fume is a byproduct of silicon production that can improve the mechanical and durability properties of concrete. The study involved casting concrete cubes, beams, and cylinders with 0-20% replacements of cement with silica fume. Testing at 7, 14, and 28 days found that compressive, tensile, and flexural strength peaked at a 15% replacement, with higher replacements reducing strength. The results indicate that silica fume can increase concrete strength when used as a partial cement replacement up to 15%.
Effect of Nano-Silica and Metakaolin on Properties of Recycled Coarse Aggrega...IRJET Journal
The document discusses a study on the effect of nano-silica and metakaolin on the properties of recycled coarse aggregate concrete. Concrete samples were produced with partial replacement of natural coarse aggregate at levels of 25%, 50%, 75% and 100% with recycled coarse aggregate. Cement was also partially replaced with metakaolin at 10%, 15% and 20% and with nano-silica at 1%, 2% and 3%. Test results showed that compressive strength was highest (29.35% more than normal concrete) when cement was replaced with 15% metakaolin and 2% nano-silica, and coarse aggregate was replaced at 50% with recycled aggregate. The strength characteristics improved significantly at these optimum replacement levels of
Experimental Investigation on SCM using Different AdmixturesIRJET Journal
The document experimentally investigates self-compacting mortar (SCM) containing various mineral admixtures like GGBS, metakaolin, and silica fume. 15 SCM mixes were developed with different ratios of these admixtures as partial replacements for cement. The fresh and hardened properties of the mixes were tested. For fresh properties, mini slump flow and mini V-funnel tests were conducted. For hardened properties, compressive strength, flexural strength, and drying shrinkage tests were performed at various ages. The test results showed that while the mineral admixtures required more water and superplasticizer to achieve similar workability to the reference mix, the SCM mixes met flowability and stability requirements. The
IRJET- CharactCharacteristic Study on Behaviour of Integral Crystalline Water...IRJET Journal
This document discusses the use of integral crystalline waterproofing concrete where cement is partially replaced with fly ash, GGBS, silica fume, or rice husk ash along with the addition of a crystalline waterproofing agent. Compressive strength tests were performed on concrete cubes at 7, 14, and 28 days that used each replacement material at different percentages along with 2% crystalline waterproofing agent. The results showed that concrete with 10% fly ash replacement and 2% crystalline waterproofing agent had the lowest 28-day compressive strength, while concrete with 20% GGBS replacement and 2% crystalline waterproofing agent had the highest 28-day compressive strength. In conclusion, the addition of crystalline
IRJET- Durability Study on Behaviour of Integral Crystalline Water Proofing C...IRJET Journal
1) The document discusses the use of integral crystalline waterproofing concrete to improve the durability and water resistance of concrete structures.
2) Crystalline waterproofing agents are added to concrete to form crystals that fill pores, cracks and capillaries, blocking the movement of water through the concrete and making it waterproof from the inside.
3) Tests were conducted using different partial replacements of cement with fly ash, silica fume, ground granulated blast furnace slag and rice husk ash, along with a 2% addition of crystalline waterproofing agent. The compressive strengths at 7, 14 and 28 days were analyzed to evaluate the performance of the integral waterproofing concrete mixes.
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 Investigation on No-Fines Concrete with Tyre as a Partia...IRJET Journal
This document summarizes an experimental investigation on no-fines concrete with tire rubber as a partial replacement for coarse aggregate and sodium silicate as an admixture. No-fines concrete is a lightweight concrete that does not contain fine aggregates. The study aims to determine the optimum mix of no-fines concrete for partial replacement of coarse aggregate with tire rubber based on compressive, split tensile, and flexural strength testing. Various mix designs were tested where coarse aggregate was replaced by tire rubber at rates of 2.5%, 5%, and 7.5% by weight. The specimens were tested after 7, 14, and 28 days of curing and results were compared to conventional no-fines concrete. The results showed
Study of Mechanical Properties of Lightweight Aggregate Concrete by using Pum...IRJET Journal
This document studies the mechanical properties of lightweight aggregate concrete made with pumice stone, ceramic tiles, and cellular lightweight concrete (CLC) bricks as partial replacements for normal coarse and fine aggregates. Pumice stone, ceramic tiles, and CLC bricks are all lightweight materials that are used to replace aggregates at rates of 10%, 20%, and 30%. Specimens including cubes, cylinders, and prisms are cast and tested at curing periods of 7, 14, and 28 days to evaluate properties like compressive strength and flexural strength. The goal is to develop an improved lightweight concrete that maintains structural integrity while reducing self-weight through the use of these alternative aggregates.
Similar to Experimental Investigation On Properties Of Self-Compacting And Self Curing Concrete, Replacing Natural Sand By Quarry Dust Using Light Weight Aggregate And Silica Fume As Mineral Admixture For M-40 Grade Concrete (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.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
Null Bangalore | Pentesters Approach to AWS IAMDivyanshu
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
Software Engineering and Project Management - Introduction, Modeling Concepts...Prakhyath Rai
Introduction, Modeling Concepts and Class Modeling: What is Object orientation? What is OO development? OO Themes; Evidence for usefulness of OO development; OO modeling history. Modeling
as Design technique: Modeling, abstraction, The Three models. Class Modeling: Object and Class Concept, Link and associations concepts, Generalization and Inheritance, A sample class model, Navigation of class models, and UML diagrams
Building the Analysis Models: Requirement Analysis, Analysis Model Approaches, Data modeling Concepts, Object Oriented Analysis, Scenario-Based Modeling, Flow-Oriented Modeling, class Based Modeling, Creating a Behavioral Model.
artificial intelligence and data science contents.pptxGauravCar
What is artificial intelligence? Artificial intelligence is the ability of a computer or computer-controlled robot to perform tasks that are commonly associated with the intellectual processes characteristic of humans, such as the ability to reason.
› ...
Artificial intelligence (AI) | Definitio
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.
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...IJECEIAES
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
Experimental Investigation On Properties Of Self-Compacting And Self Curing Concrete, Replacing Natural Sand By Quarry Dust Using Light Weight Aggregate And Silica Fume As Mineral Admixture For M-40 Grade Concrete