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Brind Kumar - One of the best experts on this subject based on the ideXlab platform.
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Corrigendum to "Evaluation of water absorption and chloride ion penetration of rice straw ash and microsilica admixed Pavement Quality Concrete" [Heliyon 5 (8) (August 2019) e02256].
Heliyon, 2019Co-Authors: Arunabh Pandey, Brind KumarAbstract:[This corrects the article DOI: 10.1016/j.heliyon.2019.e02256.].
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Evaluation of water absorption and chloride ion penetration of rice straw ash and microsilica admixed Pavement Quality Concrete
Heliyon, 2019Co-Authors: Arunabh Pandey, Brind KumarAbstract:Abstract The effects of rice straw ash (RSA) and microsilica (MS) on durability properties (water absorption and chloride ion penetration) of M40 grade Pavement Quality Concrete (PQC) were studied. Ten Concrete samples were prepared by partially substituting cement with RSA and MS in various proportions. A significant reduction was observed in the water absorption and chloride ion penetration in Concrete samples with an increase in the curing age as well as with an increase in the proportion of MS and RSA. The maximum reduction in water absorption and chloride ion penetration was observed in R2M3 (10% RSA and 7.5% MS) as compared to control Concrete (R0). The analytical relationships were developed between the above-mentioned parameters and curing age of Concrete. A linear equation was established between the initial and secondary rate of water absorption of Concrete and also between the chloride ion penetration of Concrete at 10–20 mm and 25–35 mm depth. Both these equations were applicable to all the Concrete samples of this study. Predictive charts were generated between the above-mentioned parameters and days of curing in water.
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Effects of rice straw ash and micro silica on mechanical properties of Pavement Quality Concrete
Journal of Building Engineering, 2019Co-Authors: Arunabh Pandey, Brind KumarAbstract:Abstract This research deals with improvement in the mechanical strength of Pavement Quality Concrete (PQC) when admixed with Rice Straw Ash (RSA) and Microsilica (MS). Nine mixes were prepared by partially substituting Ordinary Portland Cement (OPC) by MS (2.5%, 5%, 7.5%, and 10%), RSA (10%) and RSA-MS composite (5%–5%, 5%–7.5%, 10%–5% and 10%–7.5%). Maximum improvement was found when OPC was partially replaced by 7.5% in the case of MS and 5%–7.5% in case of RSA-MS composite. All the mix showed increased strength, w.r.t the control mix. X-Ray powder diffraction (XRD) and Scanning Electron Microscope (SEM) techniques were employed for characterization of the selected samples. Power regression equations were established to predict split tensile and flexural strength from compressive strength. They were compared with universally accepted equations and were found to be more accurate for RSA and MS admixed Concrete. Mix R1M3 (5% RSA, 7.5% MS) is recommended based on the findings.
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assessment of water absorption and chloride ion penetration of Pavement Quality Concrete admixed with wollastonite and microsilica
Construction and Building Materials, 2009Co-Authors: G.d.r.n. Ransinchung, Brind Kumar, Veerendra KumarAbstract:Abstract Wollastonite with or without microsilica was evaluated as a new material for partial replacement of cement in M40 grade Pavement Quality Concrete. Wollastonite is abundantly available in the Udaipur belt of Rajasthan state in the Indian union as a low cost material. Its physical and chemical properties were analyzed. This particular wollastonite consists of 45.6% of CaO and 48% of SiO 2 , mainly in amorphous form and has an average specific surface area of 842.7 m 2 /kg. Five finalized Concrete mix proportions including the control mix were investigated for saturated water absorption, rate of water absorption, coefficient of water absorption and chloride ion penetration. Test results indicate that up to 15% of wollastonite and 7.5% microsilica can be advantageously admixed with cement to significantly improve the water tightness of Concrete due to reduction in pore space and refinement of microstructure. Mathematical relationships existing between these parameters were studied and predictive graphs were developed.
Arunabh Pandey - One of the best experts on this subject based on the ideXlab platform.
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Corrigendum to "Evaluation of water absorption and chloride ion penetration of rice straw ash and microsilica admixed Pavement Quality Concrete" [Heliyon 5 (8) (August 2019) e02256].
Heliyon, 2019Co-Authors: Arunabh Pandey, Brind KumarAbstract:[This corrects the article DOI: 10.1016/j.heliyon.2019.e02256.].
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Evaluation of water absorption and chloride ion penetration of rice straw ash and microsilica admixed Pavement Quality Concrete
Heliyon, 2019Co-Authors: Arunabh Pandey, Brind KumarAbstract:Abstract The effects of rice straw ash (RSA) and microsilica (MS) on durability properties (water absorption and chloride ion penetration) of M40 grade Pavement Quality Concrete (PQC) were studied. Ten Concrete samples were prepared by partially substituting cement with RSA and MS in various proportions. A significant reduction was observed in the water absorption and chloride ion penetration in Concrete samples with an increase in the curing age as well as with an increase in the proportion of MS and RSA. The maximum reduction in water absorption and chloride ion penetration was observed in R2M3 (10% RSA and 7.5% MS) as compared to control Concrete (R0). The analytical relationships were developed between the above-mentioned parameters and curing age of Concrete. A linear equation was established between the initial and secondary rate of water absorption of Concrete and also between the chloride ion penetration of Concrete at 10–20 mm and 25–35 mm depth. Both these equations were applicable to all the Concrete samples of this study. Predictive charts were generated between the above-mentioned parameters and days of curing in water.
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Effects of rice straw ash and micro silica on mechanical properties of Pavement Quality Concrete
Journal of Building Engineering, 2019Co-Authors: Arunabh Pandey, Brind KumarAbstract:Abstract This research deals with improvement in the mechanical strength of Pavement Quality Concrete (PQC) when admixed with Rice Straw Ash (RSA) and Microsilica (MS). Nine mixes were prepared by partially substituting Ordinary Portland Cement (OPC) by MS (2.5%, 5%, 7.5%, and 10%), RSA (10%) and RSA-MS composite (5%–5%, 5%–7.5%, 10%–5% and 10%–7.5%). Maximum improvement was found when OPC was partially replaced by 7.5% in the case of MS and 5%–7.5% in case of RSA-MS composite. All the mix showed increased strength, w.r.t the control mix. X-Ray powder diffraction (XRD) and Scanning Electron Microscope (SEM) techniques were employed for characterization of the selected samples. Power regression equations were established to predict split tensile and flexural strength from compressive strength. They were compared with universally accepted equations and were found to be more accurate for RSA and MS admixed Concrete. Mix R1M3 (5% RSA, 7.5% MS) is recommended based on the findings.
Shriram Marathe - One of the best experts on this subject based on the ideXlab platform.
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durability and microstructure studies on slag fly ash glass powder based alkali activated Pavement Quality Concrete mixes
Construction and Building Materials, 2021Co-Authors: Shriram Marathe, I. R. Mithanthaya, Rahul Yekkar ShenoyAbstract:Abstract The present study attempts a detailed assessment of the performance of air-cured Alkali Activated Concrete (AAC) mixes produced using powdered waste glass as one of the ingredient, designed for highway applications. In this current investigations, the alkaline solution is prepared using sodium hydroxide flakes and liquid sodium silicate solution. Initially, AAC mixes are designed to obtain a Pavement Quality Concrete (PQC) of grade M−45 using Ground Granulated Blast Furnace Slag (GGBS) and fly ash (FA) as binding ingredients in ratios of 75:25, incorporating graded crusher dust as fine aggregates. Based on the preliminary investigations, the design Na2O dosage of 4% and the modulus of activator (Ms) = 1.25 was selected and this dosage was maintained for the extended investigations. The further investigations were carried out for various trial dosages of waste glass powder (GP) in the Concrete mix. The selected AAC mixes were tested with compressive and tensile strengths, flexural strength, unit weight, modulus of elasticity, durability properties (i.e, prolonged strength, acid attack, sulphate attack, and saline water attack tests); the microstructure studies using SEM with EDAX and the obtained results were discussed. The study reveal that, the AAC mixes display satisfactory performance for normal working environments for their use in roadway appliances. Thus, the use of AAC mixes produced using GGBS-FA-GP in association with the graded crusher dust fine aggregates is considered to be an economical and eco-friendly alternative to use of conventional Concretes for highway applications.
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Influence of graphene oxide on properties of Concrete in the presence of silica fumes and M-sand
Construction and Building Materials, 2021Co-Authors: P. K. Akarsh, Shriram Marathe, Arun Kumar BhatAbstract:Abstract This paper reveals the study on the use of graphane oxide (GO) in the high strength Concrete containing silica fume (SF). The current investigations are mainly focused on the suitability of GO in SF based Concretes designed for Pavement applications. Initially, using the Indian Standard guidelines, the Concrete mixes were designed to achieve a Pavement Quality Concrete of compressive strength 50 MPa using conventional OPC Concrete. Then, to understand the exact effect of GO, three types of Concretes were systematically developed, namely, silica fume Concrete, Graphene oxide Concrete and the blended Concrete containing both GO and SF; the results were compared with that of the conventional Concrete. Initially, the workability, compressive strength and flexural strength tests were conducted on trial mixes and based on the results the best combinations were selected for the further investigations. The various other tests such as compressive strength, split tensile strength, modulus of elasticity, static flexural strength, microstructure (using SEM, EDAX, XRD), durability (acid and sulphate attack test, water absorption, volume of permeable voids tests), and flexural fatigue performances were studied on selected Concrete mixes. The results show that compressive strength of about 77 MPa with a flexural strength of 8.0 MPa could be achieved for a Concrete mix with 7% SF and 0.15% GO i.e., CS3G3 mix, which is way higher than the other three reference test mixes. This mix has shown considerable performance even with other mechanical and durability performances. The microstructure of CS3G3 mix had shown denser hydration products showing stronger bonding while compared it with that of the other selected mixes. The results of flexural fatigue tests revealed that the usage of GO-based Concretes in association with SF can be used effectively as a Pavement Quality Concrete applications.
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Performance of slag-fly ash based alkali activated Concrete for paver applications utilizing powdered waste glass as a binding ingredient
International Journal of Pavement Research and Technology, 2020Co-Authors: Shriram Marathe, I. R. Mithanthaya, B. M. Mithun, Sahithya ShettyAbstract:In the present scenario, there is a huge requirement of Quality Concrete for paver applications. The production of green and sustainable Concrete has become a must to substitute the ordinary Portland cement (OPC) Concrete. It is an eminent fact that the manufacture of OPC requires the burning of its raw materials which lead to a huge amount of carbon dioxide liberation; also, it requires a large amount of energy dissipation. The Concrete produced using alkali activation has become renowned methods to replace the conventional OPC, which gives an answer to find a way to generate environmentally friendly Concrete. In the current study, Pavement Quality Concrete (PQC) is produced using alkali activation. The main focus of the work is to study the effect of powdered glass as a binding ingredient in Alkali-Activated Concrete (AAC) mixes. The alkaline activator used to activate the binder was sodium hydroxide solution dispersed in liquid sodium silicate. The utilization of industrial dissipate materials such as Ground Granulated Blast Furnace Slag (GGBS), fly ash, and waste glass powder was used as the binding ingredients, and stone crusher dust was used as fine aggregates. The experimental investigation showed that a PQC can be easily produced using alkali activation of industrial wastes satisfying its strength requirements. It was behaving better under fatigue, showing its relevance in usage as a Pavement construction material.
C B Patil - One of the best experts on this subject based on the ideXlab platform.
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estimation of resource savings due to fly ash utilization in road construction
Resources Conservation and Recycling, 2006Co-Authors: C B PatilAbstract:A methodology for estimation of natural resource savings due to fly ash utilization in road construction in India is presented. Analytical expressions for the savings of various resources namely soil, stone aggregate, stone chips, sand and cement in the embankment, granular sub-base (GSB), water bound macadam (WBM) and Pavement Quality Concrete (PQC) layers of fly ash based road formation with flexible and rigid Pavements of a given geometry have been developed. The quantity of fly ash utilized in these layers of different Pavements has also been quantified. In the present study, the maximum amount of resource savings is found in GSB followed by WBM and other layers of Pavement. The soil quantity saved increases asymptotically with the rise in the embankment height. The results of financial analysis based on Indian fly ash based road construction cost data indicate that the savings in construction cost decrease with the lead and the investment on this alternative is found to be financially attractive only for a lead less than 60 and 90 km for flexible and rigid Pavements, respectively.
G.d.r.n. Ransinchung - One of the best experts on this subject based on the ideXlab platform.
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Durability Properties of Pavement Quality Concrete Containing Fine RAP
Advances in Civil Engineering Materials, 2018Co-Authors: Surender Singh, G.d.r.n. RansinchungAbstract:In the present study, the potential of supplementary cementitious materials such as silica fume (SF), fly ash (FA), and sugarcane bagasse ash (SCBG) for enhancing the durability properties of Pavement Quality Concrete (PQC) mixes containing 75 % fine reclaimed asphalt Pavement (75RAP) is assessed. Different physical and durability properties such as water absorption, total permeable voids, initial rate, secondary rate and coefficient of water absorption, and performance in sulfate and chloride-rich environments were evaluated. It was found that the ASTM recommended temperature of 110 ± 5°C for evaluating water absorption and permeable voids should be changed to 48 ± 2°C to prevent the melting of asphalt present in RAP. Similarly, the duration for completely drying the specimens shall be at least eight days. It was observed that incorporation of fine RAP could compromise with the durability of the PQC mixes significantly. Inclusions of all the considered admixtures (except SF) were found to have an insignificant effect on the modulus of rupture, however, significant enhancement in the durability properties of 75RAP mix was observed (except SCBG). The blending of 15 % FA with 10 % SF was found to enhance the durability performance of 75RAP mix better than the mix containing natural aggregates.
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Influence of recycled fines obtained from demolished Concrete slabs for use in Pavement Quality Concrete construction
2012Co-Authors: Aditya Kumar Anupam, G.d.r.n. Ransinchung, Praveen KumarAbstract:The present study aim to evaluate the mechanical properties of hardened Concrete and the interface between the coarse aggregate and hydrated cement paste when river sand is replaced by recycled fine material passing 4.75 mm IS sieve. Five series of Concrete mixes were prepared including referral mix with a constant water/cement and constant aggregate ratios of 0.46 and 3.5 respectively. River sand was partially replaced by fine material passing 4.75 mm IS sieve at 25, 50, 75 and 100 per cent respectively. The lime reactivity test on this fine material was conducted to determine its binding efficacy. Extensive laboratory tests were conducted to evaluate the mechanical properties such as compressive strength, flexural strength, split tensile strength and modulus of elasticity of Concrete. Scanning electron microscopy study was conducted to examine the surface morphology of the hydrated cement paste and to examine the performance of interfacial zones of the hardened Concrete.
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assessment of water absorption and chloride ion penetration of Pavement Quality Concrete admixed with wollastonite and microsilica
Construction and Building Materials, 2009Co-Authors: G.d.r.n. Ransinchung, Brind Kumar, Veerendra KumarAbstract:Abstract Wollastonite with or without microsilica was evaluated as a new material for partial replacement of cement in M40 grade Pavement Quality Concrete. Wollastonite is abundantly available in the Udaipur belt of Rajasthan state in the Indian union as a low cost material. Its physical and chemical properties were analyzed. This particular wollastonite consists of 45.6% of CaO and 48% of SiO 2 , mainly in amorphous form and has an average specific surface area of 842.7 m 2 /kg. Five finalized Concrete mix proportions including the control mix were investigated for saturated water absorption, rate of water absorption, coefficient of water absorption and chloride ion penetration. Test results indicate that up to 15% of wollastonite and 7.5% microsilica can be advantageously admixed with cement to significantly improve the water tightness of Concrete due to reduction in pore space and refinement of microstructure. Mathematical relationships existing between these parameters were studied and predictive graphs were developed.