abdul razak | Visvesvaraya Technological University (original) (raw)

Papers by abdul razak

Rare Metals Materials and Engineering Press, 2023

Ordinary Portland cement (OPC), a widely used construction material, has inherent limitations in ... more Ordinary Portland cement (OPC), a widely used construction material, has inherent limitations in tensile and flexural strength, strain capacities, fracture resistance, and resistance to fracture formation. To address these shortcomings, nanomaterials such as carbon nanofibers, carbon nanotubes (CNTs), nano-silica, graphene, and graphene oxide (GO) are incorporated into concrete admixtures. This study focuses on the utilization of GO, in enhancing the properties of concrete, particularly in High Performance Concrete (HPC). The research explores the impact of varying percentages of graphene in concrete mixes on flexural strength, compressive strength, and modulus of elasticity. The addition of GO to concrete leads to improved mechanical properties, with notable advancements in compressive, tensile, and flexural strengths. Experimental results indicate that a 0.03% GO concentration can substantially enhance tensile strength, flexural strength, and compressive strength in cement composites. Flexural tests demonstrate significant improvements in strength with the addition of 0.03%, 0.05%, and 0.1% graphene, showing increases of 14.40%, 16.8%, and 23.2%, respectively. The compressive strength test reveals positive effects on concrete strength with the incorporation of 0.03%, 0.05%, and 0.1% graphene, resulting in increases of 24.57%, 13.71%, and 12%, respectively. The modulus of elasticity test indicates that higher graphene content correlates with lower modulus, enhancing concrete ductility.

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Rare Metals Materials and Engineering Press, 2023

Utilizing waste materials possessing pozzolanic properties in concrete production has become a gl... more Utilizing waste materials possessing pozzolanic properties in concrete production has become a global trend. Evaluating the pozzolanic activity of materials that replace cement is gaining significance due to the growing demand for environmentally sustainable cement products. Incorporating Bamboo Leaf Ash(BLA) as supplementary cementitious material(SCM) in concrete aligns with the principles of sustainable construction by reducing waste, utilizing renewable resources, and potentially lowering carbon emissions associated with traditional cement production. In this research work, BLA is used as partial replacement for ordinary Portland cement(OPC) in ranges of 10%, 20%, 30%. Fresh and hardened properties of concrete were investigated. Experimental results showed that, Concrete mix with BLA gives satisfactory cube compressive strength upto the replacement level of 20% with OPC as binder. Beyond 20% replacement, cube compressive strength falls below the characteristic strength of concrete.

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i-manager Publications, 2023

Several materials are being used in concrete as a replacement to coarse aggregates. The present s... more Several materials are being used in concrete as a replacement to coarse aggregates. The present study focuses on experimenting with using Coconut Shell Aggregates (CSA) as replacement to coarse aggregates partially. The high strength and modulus of the coconut shell make it a suitable coarse aggregate for concrete applications. The replacement levels were set at 10%, 15%, and 20%. The experimental results revealed that CSA, when replaced with conventional coarse aggregates, gave satisfactory compressive strength up to 15% replacement, beyond which the strength dropped below the required value. In addition, the use of CSA in concrete significantly reduces the self-weight of concrete, thus contributing to the economy of construction.

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Self-compacting concrete (SCC) is a flowing concrete mixture that is able to consolidate under it... more Self-compacting concrete (SCC) is a flowing concrete mixture that is able to consolidate under its own weight. The highly fluid nature of SCC makes it suitable for placing in difficult conditions and in sections with congested reinforcement. The objective of this study is to investigate the influence of partial replacement of natural river sand by quarry dust in different percentages and to study the effect of replacement of cement by fly ash in the preparation of self compacting concrete. Mix design of SCC with various dosages of quarry dust and fly ash was done for diffent cementitious content and the effect on fresh and hardened properties was studied. SCC trial made with flyash addition at 20% as a partial replacement with cement has shows similar results as that of trial with no flyash addition. Flyash addition around 50% has shows extended (more than 24 hours) setting time of concrete and compressive strengths are not conforming to even M20 grade requirements for the trial mad...

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IJRASET Publications, 2023

Geopolymer concrete has had an extra edge over normal concrete for the past 2-3 decades. Accordin... more Geopolymer concrete has had an extra edge over normal concrete for the past 2-3 decades. According to research, geopolymer concrete offers improved strength, modulus of elasticity, and durability. In this work, Ordinary Portland cement is fully replaced by a mixture of Sugar Cane Bagasse Ash(SCBA) and Ground Granulated Blast Furnace Slag(GGBS), with alkaline liquids added for reactivity. Sodium Hydroxide (NaOH) and Sodium Silicate (Na 2 SiO 3) are used for the polymerization to achieve good workability in the geopolymer concrete. The combined quantities of geopolymer concrete were optimized using the Taguchi method to meet the specified strength parameters for the concrete grade of M30 with nine mixes. Binder content, which included three proportions of SCBA and GGBS, NaOH/Na 2 SiO 3 ratios (1:2, 1:2.5, and 1:3), molarity(4M,8M,12M), and alkaline activator to binder content ratio(AAC/BC) of 0.4,0.5,0.6 were among the various parameters of study. Compressive strength and split-tensile strength was investigated using these components and variables during the work.

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Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism th... more Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism that are independent. Every admixture at optimum dosage gives better results when used with cement. The proposed research work is aimed at testing compatibility of slag cement at different dosages with PCE based admixtures. It was found that The Combination 80% Cement With 20% GGBS Are More Compatible Compared To All The Optimum Dosage Combinations. 1. Literature Review M.M.Alonso (1) studied the effect of the structural differences in Polycarboxylate and Polyether admixtures on the rheological properties of cement pastes with different chemical and mineralogical compositions and different active additions. It was observed that the cement pastes which contained granulated blast furnace slag showed the highest rises in flowability. M.K.Maroliya (2) studied the change in ingredients contents of concrete like sand and cement under the influence of plasticizers and superplasticizers at various...

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JOURNAL OF ENGINEERING, COMPUTING & ARCHITECTURE, 2022

Admixture-Binder interaction plays vital role in concrete both at fresh and hardened state. The b... more Admixture-Binder interaction plays vital role in concrete both at fresh and hardened state. The behavior of chemical admixture varies in accordance with the binder content. The study primarily aims at examining the compatibility of blended cement (OPC and Fly ash) of different proportions with chemical admixture. Experimental investigation was done for mortar (1:4 and 1:6) as per the optimum dosage obtained from compatibility study. It was observed that most of the blended mixes were showing optimum flow at dosage of 3%. However, the flow time increased with increase in Fly Ash content. Strength tests on mortar confirmed satisfactory results for both 1:4 and 1:6 mortar whereas 1:4 mortar showed higher strength due to the higher binder content compared to 1:6.

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Ecology, Environment and Conservation, 2021

Generation and accumulation of huge amount of plastic waste has become a silent threat to the env... more Generation and accumulation of huge amount of plastic waste has become a silent threat to the environment and it has become a serious issue for its disposal. Plastic being a non-biodegradable, its disposal has become a major issue. In order to overcome these issues, many attempts were made to control the use of plastic in the past. But unfortunately, none of them were found to be effective. On contrary to this, one of the major problems facing that we are facing in Construction Industry is unavailability of concrete (cement, sand and coarse aggregate). Series of experiments have been conducted on plastic wastes to check its feasibility with respect to various properties of concrete like strength, ductility, durability, workability when it is partially used with concrete. Though plastic waste is considered as an urban waste or junk, but with its limited properties it can partially replace some of the conventional building material like bricks in construction industry. In some of the countries where people are under/below poverty line can construct their houses by making use of these waste Poly Ethylene Terephthalate (PET) bottles. These PET bottles when filled with waste filler material like construction and demolition waste can be used as bricks when proper casting is done with concrete mix. Various factors like execution time, cost, and flexibility, reducing waste and its utilization and energy efficiency, PET bottles have found to be more effective when compared to conventional building material like bricks or concrete blocks. Construction cost can also be reduced to a certain limit by saving the volume of concrete.

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Global Journal of Engineering and Applied Sciences, 2011

This paper presents a novel method of predicting concrete mix parameters using design charts deve... more This paper presents a novel method of predicting concrete mix parameters using design charts developed
as per IS 10262:2009 codal provisions and these results are compared with Artificial Neural Network
(ANN) predicted values for the concrete mixes, designed with and without partial replacement of cement
with Fly ash. The concrete grades selected for preparing design charts are M20, M25, M30, M35, M40 and
M45 and an application of ANN is made to design concrete mix for grades M40 and M45 with and without
partial replacement of cement with Fly ash. 30% of Cement replacement with Fly ash is considered and
the type of concrete for placing is pumpable concrete. Both the design charts and Neural network is used
to predict the quantities of cement, Fly ash, water, water cement ratio, coarse aggregates, fine aggregates,
chemical admixture & minimum cement content and maximum water cement ratio for various exposure
conditions. Six inputs namely the grade of concrete, required slump, maximum size of aggregates, type of
aggregates, zone of sand and exposure conditions are used for the neural net. A five layer neural network
predicted values are in error range of 0.5% to 6%.

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International Research Journal of Engineering and Technology, 2015

Self-compacting concrete (SCC) is a flowing concrete mixture that is able to consolidate under it... more Self-compacting concrete (SCC) is a flowing concrete mixture that is able to consolidate under its own weight. The highly fluid nature of SCC makes it suitable for placing in difficult conditions and in sections with congested reinforcement. The objective of this study is to investigate the influence of partial replacement of natural river sand by quarry dust in different percentages and to study the effect of replacement of cement by fly ash in the preparation of self compacting concrete. Mix design of SCC with various dosages of quarry dust and fly ash was done for diffent cementitious content and the effect on fresh and hardened properties was studied. SCC trial made with flyash addition at 20% as a partial replacement with cement has shows similar results as that of trial with no flyash addition. Flyash addition around 50% has shows extended (more than 24 hours) setting time of concrete and compressive strengths are not conforming to even M20 grade requirements for the trial made with 400 kg/m3 of Cementitious content. In order to affect the advantage of flyash utilization there shall be a minimum of 30% flyash replacement for cement. Usage of quarry dust decreases workability and with the usage of admixtures the workability of the mix was well maintained.

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International Research Journal of Engineering and Technology, 2015

An experimental study has been carried out to study the workability and strength behavior of conc... more An experimental study has been carried out to study the workability and strength behavior of concrete made using grey water and conventional concrete both in fresh and hardened states. To conduct the study, treated water from a treatment plant at two different stages of treatment has been collected and its effect on workability and strength of a mix M20 was studied. Workability was checked by slump and compaction factor method for each set of preparation of the samples. Strength behavior was studied with reference to compression strength, split tensile strength and flexural strength of the concrete specimens by destructive methods. The result confirms that the use of secondary treated water will not alter fresh and hardened properties of the concrete significantly when compared with that prepared with potable water. The study also concludes that there may be possibilities of corrosion of reinforcement due to the organic and inorganic impurities present in the grey water. Hence concrete made using grey water is suitable for plain concrete.

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International Research Journal of Engineering and Technology, 2016

Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism th... more Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism that are independent. Every admixture at optimum dosage gives better results when used with cement. The proposed research work is aimed at testing compatibility of slag cement at different dosages with PCE based admixtures. It was found that The Combination 80% Cement With 20% GGBS Are More Compatible Compared To All The Optimum Dosage Combinations.

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International Research Journal of Engineering and Technology, 2017

Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism th... more Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism that are independent. Every admixture at optimum dosage gives better results when used with cement. The proposed research is aimed to study the compatibility of super plasticizer with different types of blended cements by investigatingflow time value. The present work is to study the behaviour of blended mixes (OPC+GGBS+ALCCOFINE) with the PCE (poly carboxylic ether) based admixtures at various dosages of both GGB,ALCCOFINE and chemical admixture. It was observed that most of the blended mixes were compatible with PCE based admixtures at dosages of around 3%. Increase in flow time has been observed with the addition of ALCCOFINE.

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International Research Journal of Engineering and Technology, 2018

Cement-chemical admixture compatibility is an essential parameter to ensure desired performance a... more Cement-chemical admixture compatibility is an essential parameter to ensure desired performance and durability of the concrete structures. However compatibility of blended mixes with chemical admixtures will ensure economy in construction along with desired performance and durability of the concrete structures. The hydration of cement involves series of reactions, which mainly depend on the cement composition, the water / cement ratio, surface area, particle size distribution, temperature and admixtures. Admixtures when added in small quantities make the hydration process much more complex. In the present study double blended mixes are tested for fresh properties, optimum dosage of chemical admixtures and strength.

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International Journal of Engineering and Advanced Technology, 2019

Paper Mineral admixtures being the economical alternatives to Ordinary Portland Cement (OPC) for ... more Paper Mineral admixtures being the economical alternatives to Ordinary Portland Cement (OPC) for various normal and special concretes induce desirable properties to concrete such as higher flow, low heat of hydration, higher strength gain and enhanced durability. Ground granulated blast furnace slag(GGBFS) being one of the largely used mineral admixture alongside Fly Ash as supplementary cementitious material in concrete contributes to enhanced durability properties and low heat of hydration. Various replacement percentages of GGBS at 30%, 40%, 50% and 60% are used in binary blended Self compacting concrete(SCC) in the present study. At 40% replacement level, SCC exhibited improved workability, strength and durability properties. Alccofine(Ultrafine GGBS) used in ternary blended SCC enhanced early strength gain without affecting workability of SCC to a significant extent.

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Journal of Advanced Research in Dynamical & Control Systems, 2019

Binder-chemical admixture compatibility plays a vital role in deciding the performance of concret... more Binder-chemical admixture compatibility plays a vital role in deciding the performance of concrete especially in the fresh state. Optimum dosage of chemical admixture is helpful in controlling various fresh properties of Self Compacting Concrete(SCC) and avoiding the problems of segregation and bleeding in blended concrete with mineral admixtures such as Ground granulated Blast Furnace Slag(GGBS) and Alccofine(Ultrafine GGBS). The study focusses on optimization of chemical admixture dosage for binary and ternary blended concrete for the production of SCC. Various combinations of binary blended concrete and ternary blended concrete along with control mix(only OPC) are tested for workability properties for passing ability, filling ability and and resistance to segregation(V-Funnel Time). It was observed that concrete containing higher GGBS required lesser dosage of chemical admixture for satisfying workability properties as per EFNAARC guidelines. Alccofine was added at 5% to compensate for hardened properties.

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International Journal for Research in Applied Science & Engineering Technology, 2020

Supplementary cementitious materials (SCM) are the integral part of modern concrete with signific... more Supplementary cementitious materials (SCM) are the integral part of modern concrete with significant enhancement
in concrete performance. Low cost of production, low heat of hydration along with improved mechanical properties encourage
the replacement of ordinary Portland cement (OPC) with SCMs to a greater extent. The study focusses on influence of Ground
granulated blast furnace slag (GGBS) as SCM in production of concrete paver blocks. Compressive strength, split tensile
strength, and flexural strength are the properties under consideration. Improved compressive strength and flexural strength was
observed in blended concrete with 20% and 40% GGBS replacement levels.

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Journal of Seybold Report, 2020

Usage of Ground granulated blast furnace slag(GGBS) and silica fume(SF) in the blended concrete a... more Usage of Ground granulated blast furnace slag(GGBS) and silica fume(SF) in the blended concrete alongside ordinary portland cement(OPC) has been in practice owing to low cost of production, denser microstructure leading to enhanced durability with satisfactory strength properties of concrete. The present study focusses on usage of GGBS and Silica Fume in ternary blended mortars. 1:4 and 1:6 mortars are studied for compressive strength at 3,7, and 28 days of age. Results indicated that compressive strength of mortar cubes was at par with that of control mix upto mixes with 30% GGBS and 10% Silica Fume. Cost analysis indicated a decrease in cost of binder from the mixes with 30% GGBS and 10% Silica Fume in comparison with control mix.

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Rare Metals Materials and Engineering Press, 2023

Ordinary Portland cement (OPC), a widely used construction material, has inherent limitations in ... more Ordinary Portland cement (OPC), a widely used construction material, has inherent limitations in tensile and flexural strength, strain capacities, fracture resistance, and resistance to fracture formation. To address these shortcomings, nanomaterials such as carbon nanofibers, carbon nanotubes (CNTs), nano-silica, graphene, and graphene oxide (GO) are incorporated into concrete admixtures. This study focuses on the utilization of GO, in enhancing the properties of concrete, particularly in High Performance Concrete (HPC). The research explores the impact of varying percentages of graphene in concrete mixes on flexural strength, compressive strength, and modulus of elasticity. The addition of GO to concrete leads to improved mechanical properties, with notable advancements in compressive, tensile, and flexural strengths. Experimental results indicate that a 0.03% GO concentration can substantially enhance tensile strength, flexural strength, and compressive strength in cement composites. Flexural tests demonstrate significant improvements in strength with the addition of 0.03%, 0.05%, and 0.1% graphene, showing increases of 14.40%, 16.8%, and 23.2%, respectively. The compressive strength test reveals positive effects on concrete strength with the incorporation of 0.03%, 0.05%, and 0.1% graphene, resulting in increases of 24.57%, 13.71%, and 12%, respectively. The modulus of elasticity test indicates that higher graphene content correlates with lower modulus, enhancing concrete ductility.

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Rare Metals Materials and Engineering Press, 2023

Utilizing waste materials possessing pozzolanic properties in concrete production has become a gl... more Utilizing waste materials possessing pozzolanic properties in concrete production has become a global trend. Evaluating the pozzolanic activity of materials that replace cement is gaining significance due to the growing demand for environmentally sustainable cement products. Incorporating Bamboo Leaf Ash(BLA) as supplementary cementitious material(SCM) in concrete aligns with the principles of sustainable construction by reducing waste, utilizing renewable resources, and potentially lowering carbon emissions associated with traditional cement production. In this research work, BLA is used as partial replacement for ordinary Portland cement(OPC) in ranges of 10%, 20%, 30%. Fresh and hardened properties of concrete were investigated. Experimental results showed that, Concrete mix with BLA gives satisfactory cube compressive strength upto the replacement level of 20% with OPC as binder. Beyond 20% replacement, cube compressive strength falls below the characteristic strength of concrete.

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i-manager Publications, 2023

Several materials are being used in concrete as a replacement to coarse aggregates. The present s... more Several materials are being used in concrete as a replacement to coarse aggregates. The present study focuses on experimenting with using Coconut Shell Aggregates (CSA) as replacement to coarse aggregates partially. The high strength and modulus of the coconut shell make it a suitable coarse aggregate for concrete applications. The replacement levels were set at 10%, 15%, and 20%. The experimental results revealed that CSA, when replaced with conventional coarse aggregates, gave satisfactory compressive strength up to 15% replacement, beyond which the strength dropped below the required value. In addition, the use of CSA in concrete significantly reduces the self-weight of concrete, thus contributing to the economy of construction.

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Self-compacting concrete (SCC) is a flowing concrete mixture that is able to consolidate under it... more Self-compacting concrete (SCC) is a flowing concrete mixture that is able to consolidate under its own weight. The highly fluid nature of SCC makes it suitable for placing in difficult conditions and in sections with congested reinforcement. The objective of this study is to investigate the influence of partial replacement of natural river sand by quarry dust in different percentages and to study the effect of replacement of cement by fly ash in the preparation of self compacting concrete. Mix design of SCC with various dosages of quarry dust and fly ash was done for diffent cementitious content and the effect on fresh and hardened properties was studied. SCC trial made with flyash addition at 20% as a partial replacement with cement has shows similar results as that of trial with no flyash addition. Flyash addition around 50% has shows extended (more than 24 hours) setting time of concrete and compressive strengths are not conforming to even M20 grade requirements for the trial mad...

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IJRASET Publications, 2023

Geopolymer concrete has had an extra edge over normal concrete for the past 2-3 decades. Accordin... more Geopolymer concrete has had an extra edge over normal concrete for the past 2-3 decades. According to research, geopolymer concrete offers improved strength, modulus of elasticity, and durability. In this work, Ordinary Portland cement is fully replaced by a mixture of Sugar Cane Bagasse Ash(SCBA) and Ground Granulated Blast Furnace Slag(GGBS), with alkaline liquids added for reactivity. Sodium Hydroxide (NaOH) and Sodium Silicate (Na 2 SiO 3) are used for the polymerization to achieve good workability in the geopolymer concrete. The combined quantities of geopolymer concrete were optimized using the Taguchi method to meet the specified strength parameters for the concrete grade of M30 with nine mixes. Binder content, which included three proportions of SCBA and GGBS, NaOH/Na 2 SiO 3 ratios (1:2, 1:2.5, and 1:3), molarity(4M,8M,12M), and alkaline activator to binder content ratio(AAC/BC) of 0.4,0.5,0.6 were among the various parameters of study. Compressive strength and split-tensile strength was investigated using these components and variables during the work.

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Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism th... more Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism that are independent. Every admixture at optimum dosage gives better results when used with cement. The proposed research work is aimed at testing compatibility of slag cement at different dosages with PCE based admixtures. It was found that The Combination 80% Cement With 20% GGBS Are More Compatible Compared To All The Optimum Dosage Combinations. 1. Literature Review M.M.Alonso (1) studied the effect of the structural differences in Polycarboxylate and Polyether admixtures on the rheological properties of cement pastes with different chemical and mineralogical compositions and different active additions. It was observed that the cement pastes which contained granulated blast furnace slag showed the highest rises in flowability. M.K.Maroliya (2) studied the change in ingredients contents of concrete like sand and cement under the influence of plasticizers and superplasticizers at various...

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JOURNAL OF ENGINEERING, COMPUTING & ARCHITECTURE, 2022

Admixture-Binder interaction plays vital role in concrete both at fresh and hardened state. The b... more Admixture-Binder interaction plays vital role in concrete both at fresh and hardened state. The behavior of chemical admixture varies in accordance with the binder content. The study primarily aims at examining the compatibility of blended cement (OPC and Fly ash) of different proportions with chemical admixture. Experimental investigation was done for mortar (1:4 and 1:6) as per the optimum dosage obtained from compatibility study. It was observed that most of the blended mixes were showing optimum flow at dosage of 3%. However, the flow time increased with increase in Fly Ash content. Strength tests on mortar confirmed satisfactory results for both 1:4 and 1:6 mortar whereas 1:4 mortar showed higher strength due to the higher binder content compared to 1:6.

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Ecology, Environment and Conservation, 2021

Generation and accumulation of huge amount of plastic waste has become a silent threat to the env... more Generation and accumulation of huge amount of plastic waste has become a silent threat to the environment and it has become a serious issue for its disposal. Plastic being a non-biodegradable, its disposal has become a major issue. In order to overcome these issues, many attempts were made to control the use of plastic in the past. But unfortunately, none of them were found to be effective. On contrary to this, one of the major problems facing that we are facing in Construction Industry is unavailability of concrete (cement, sand and coarse aggregate). Series of experiments have been conducted on plastic wastes to check its feasibility with respect to various properties of concrete like strength, ductility, durability, workability when it is partially used with concrete. Though plastic waste is considered as an urban waste or junk, but with its limited properties it can partially replace some of the conventional building material like bricks in construction industry. In some of the countries where people are under/below poverty line can construct their houses by making use of these waste Poly Ethylene Terephthalate (PET) bottles. These PET bottles when filled with waste filler material like construction and demolition waste can be used as bricks when proper casting is done with concrete mix. Various factors like execution time, cost, and flexibility, reducing waste and its utilization and energy efficiency, PET bottles have found to be more effective when compared to conventional building material like bricks or concrete blocks. Construction cost can also be reduced to a certain limit by saving the volume of concrete.

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Global Journal of Engineering and Applied Sciences, 2011

This paper presents a novel method of predicting concrete mix parameters using design charts deve... more This paper presents a novel method of predicting concrete mix parameters using design charts developed
as per IS 10262:2009 codal provisions and these results are compared with Artificial Neural Network
(ANN) predicted values for the concrete mixes, designed with and without partial replacement of cement
with Fly ash. The concrete grades selected for preparing design charts are M20, M25, M30, M35, M40 and
M45 and an application of ANN is made to design concrete mix for grades M40 and M45 with and without
partial replacement of cement with Fly ash. 30% of Cement replacement with Fly ash is considered and
the type of concrete for placing is pumpable concrete. Both the design charts and Neural network is used
to predict the quantities of cement, Fly ash, water, water cement ratio, coarse aggregates, fine aggregates,
chemical admixture & minimum cement content and maximum water cement ratio for various exposure
conditions. Six inputs namely the grade of concrete, required slump, maximum size of aggregates, type of
aggregates, zone of sand and exposure conditions are used for the neural net. A five layer neural network
predicted values are in error range of 0.5% to 6%.

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International Research Journal of Engineering and Technology, 2015

Self-compacting concrete (SCC) is a flowing concrete mixture that is able to consolidate under it... more Self-compacting concrete (SCC) is a flowing concrete mixture that is able to consolidate under its own weight. The highly fluid nature of SCC makes it suitable for placing in difficult conditions and in sections with congested reinforcement. The objective of this study is to investigate the influence of partial replacement of natural river sand by quarry dust in different percentages and to study the effect of replacement of cement by fly ash in the preparation of self compacting concrete. Mix design of SCC with various dosages of quarry dust and fly ash was done for diffent cementitious content and the effect on fresh and hardened properties was studied. SCC trial made with flyash addition at 20% as a partial replacement with cement has shows similar results as that of trial with no flyash addition. Flyash addition around 50% has shows extended (more than 24 hours) setting time of concrete and compressive strengths are not conforming to even M20 grade requirements for the trial made with 400 kg/m3 of Cementitious content. In order to affect the advantage of flyash utilization there shall be a minimum of 30% flyash replacement for cement. Usage of quarry dust decreases workability and with the usage of admixtures the workability of the mix was well maintained.

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International Research Journal of Engineering and Technology, 2015

An experimental study has been carried out to study the workability and strength behavior of conc... more An experimental study has been carried out to study the workability and strength behavior of concrete made using grey water and conventional concrete both in fresh and hardened states. To conduct the study, treated water from a treatment plant at two different stages of treatment has been collected and its effect on workability and strength of a mix M20 was studied. Workability was checked by slump and compaction factor method for each set of preparation of the samples. Strength behavior was studied with reference to compression strength, split tensile strength and flexural strength of the concrete specimens by destructive methods. The result confirms that the use of secondary treated water will not alter fresh and hardened properties of the concrete significantly when compared with that prepared with potable water. The study also concludes that there may be possibilities of corrosion of reinforcement due to the organic and inorganic impurities present in the grey water. Hence concrete made using grey water is suitable for plain concrete.

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International Research Journal of Engineering and Technology, 2016

Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism th... more Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism that are independent. Every admixture at optimum dosage gives better results when used with cement. The proposed research work is aimed at testing compatibility of slag cement at different dosages with PCE based admixtures. It was found that The Combination 80% Cement With 20% GGBS Are More Compatible Compared To All The Optimum Dosage Combinations.

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International Research Journal of Engineering and Technology, 2017

Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism th... more Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism that are independent. Every admixture at optimum dosage gives better results when used with cement. The proposed research is aimed to study the compatibility of super plasticizer with different types of blended cements by investigatingflow time value. The present work is to study the behaviour of blended mixes (OPC+GGBS+ALCCOFINE) with the PCE (poly carboxylic ether) based admixtures at various dosages of both GGB,ALCCOFINE and chemical admixture. It was observed that most of the blended mixes were compatible with PCE based admixtures at dosages of around 3%. Increase in flow time has been observed with the addition of ALCCOFINE.

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International Research Journal of Engineering and Technology, 2018

Cement-chemical admixture compatibility is an essential parameter to ensure desired performance a... more Cement-chemical admixture compatibility is an essential parameter to ensure desired performance and durability of the concrete structures. However compatibility of blended mixes with chemical admixtures will ensure economy in construction along with desired performance and durability of the concrete structures. The hydration of cement involves series of reactions, which mainly depend on the cement composition, the water / cement ratio, surface area, particle size distribution, temperature and admixtures. Admixtures when added in small quantities make the hydration process much more complex. In the present study double blended mixes are tested for fresh properties, optimum dosage of chemical admixtures and strength.

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International Journal of Engineering and Advanced Technology, 2019

Paper Mineral admixtures being the economical alternatives to Ordinary Portland Cement (OPC) for ... more Paper Mineral admixtures being the economical alternatives to Ordinary Portland Cement (OPC) for various normal and special concretes induce desirable properties to concrete such as higher flow, low heat of hydration, higher strength gain and enhanced durability. Ground granulated blast furnace slag(GGBFS) being one of the largely used mineral admixture alongside Fly Ash as supplementary cementitious material in concrete contributes to enhanced durability properties and low heat of hydration. Various replacement percentages of GGBS at 30%, 40%, 50% and 60% are used in binary blended Self compacting concrete(SCC) in the present study. At 40% replacement level, SCC exhibited improved workability, strength and durability properties. Alccofine(Ultrafine GGBS) used in ternary blended SCC enhanced early strength gain without affecting workability of SCC to a significant extent.

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Journal of Advanced Research in Dynamical & Control Systems, 2019

Binder-chemical admixture compatibility plays a vital role in deciding the performance of concret... more Binder-chemical admixture compatibility plays a vital role in deciding the performance of concrete especially in the fresh state. Optimum dosage of chemical admixture is helpful in controlling various fresh properties of Self Compacting Concrete(SCC) and avoiding the problems of segregation and bleeding in blended concrete with mineral admixtures such as Ground granulated Blast Furnace Slag(GGBS) and Alccofine(Ultrafine GGBS). The study focusses on optimization of chemical admixture dosage for binary and ternary blended concrete for the production of SCC. Various combinations of binary blended concrete and ternary blended concrete along with control mix(only OPC) are tested for workability properties for passing ability, filling ability and and resistance to segregation(V-Funnel Time). It was observed that concrete containing higher GGBS required lesser dosage of chemical admixture for satisfying workability properties as per EFNAARC guidelines. Alccofine was added at 5% to compensate for hardened properties.

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International Journal for Research in Applied Science & Engineering Technology, 2020

Supplementary cementitious materials (SCM) are the integral part of modern concrete with signific... more Supplementary cementitious materials (SCM) are the integral part of modern concrete with significant enhancement
in concrete performance. Low cost of production, low heat of hydration along with improved mechanical properties encourage
the replacement of ordinary Portland cement (OPC) with SCMs to a greater extent. The study focusses on influence of Ground
granulated blast furnace slag (GGBS) as SCM in production of concrete paver blocks. Compressive strength, split tensile
strength, and flexural strength are the properties under consideration. Improved compressive strength and flexural strength was
observed in blended concrete with 20% and 40% GGBS replacement levels.

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Journal of Seybold Report, 2020

Usage of Ground granulated blast furnace slag(GGBS) and silica fume(SF) in the blended concrete a... more Usage of Ground granulated blast furnace slag(GGBS) and silica fume(SF) in the blended concrete alongside ordinary portland cement(OPC) has been in practice owing to low cost of production, denser microstructure leading to enhanced durability with satisfactory strength properties of concrete. The present study focusses on usage of GGBS and Silica Fume in ternary blended mortars. 1:4 and 1:6 mortars are studied for compressive strength at 3,7, and 28 days of age. Results indicated that compressive strength of mortar cubes was at par with that of control mix upto mixes with 30% GGBS and 10% Silica Fume. Cost analysis indicated a decrease in cost of binder from the mixes with 30% GGBS and 10% Silica Fume in comparison with control mix.

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