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K. Rajagopal

Bio: K. Rajagopal is an academic researcher from Alagappa Chettiar College of Engineering and Technology. The author has contributed to research in topics: Cement & Properties of concrete. The author has an hindex of 4, co-authored 4 publications receiving 916 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, the effects of bagasse ash (BA) content as partial replacement of cement on physical and mechanical properties of hardened concrete are reported, including compressive strength, splitting tensile strength, water absorption, permeability characteristics, chloride diffusion and resistance to chloride ion penetration.
Abstract: The utilization of waste materials in concrete manufacture provides a satisfactory solution to some of the environmental concerns and problems associated with waste management. Agro wastes such as rice husk ash, wheat straw ash, hazel nutshell and sugarcane bagasse ash are used as pozzolanic materials for the development of blended cements. Few studies have been reported on the use of bagasse ash (BA) as partial cement replacement material in respect of cement mortars. In this study, the effects of BA content as partial replacement of cement on physical and mechanical properties of hardened concrete are reported. The properties of concrete investigated include compressive strength, splitting tensile strength, water absorption, permeability characteristics, chloride diffusion and resistance to chloride ion penetration. The test results indicate that BA is an effective mineral admixture, with 20% as optimal replacement ratio of cement.

563 citations

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TL;DR: In this article, a rice husk ash (RHA) prepared from the boiler burnt husk residue of a particular rice mill has been evaluated for optimal level of replacement as blending component in cements.

513 citations

Journal ArticleDOI
TL;DR: In this article, the main purpose of the study is to investigate corrosion performance of reinforcing carbon steel in bagasse ash (BA) blended concrete and compare it with control concrete in various cement replacement levels.
Abstract: Purpose – Utilization of industrial and agricultural waste products as cement replacement materials in concrete technology has been an interesting subject of research for economical, environmental, and technical reasons. Portland cement incorporating these cement replacement materials improves corrosion resistance of carbon steel. Sugar cane bagasse is considered as waste in sugar mills and dumped in open space or used as fuel for boilers. The main purpose of the study is to investigate corrosion performance of reinforcing carbon steel in bagasse ash (BA) blended cement concrete and compare it with control concrete.Design/methodology/approach – BA is prepared by burning boiler‐fired ash at a controlled temperature of 650°C for 1 h and cooled. The ash is then ground to a fineness of 46 μm as Pozzolanic material and blended in concrete in various cement replacement levels. The corrosion behaviour of carbon steel in BA blended concretes exposed to alternate dry‐wet cycles in 3.0 percent NaCl solution for 18 ...

31 citations

Journal Article
TL;DR: In this article, the effects of rice husk ash (RHA) and bagasse ash (8A) as cement replacement materials on thc chloride resisting properties have been studied, RHA and BA have been used up to 30 % replacement by wight of cement with fixed water to binder ratio of 0.55, the properties of concrete investigated include water absorption, permeability, sorptivity, resistance to chloride ion penetration in terms of toal charge passed in coulombs and chloride diffusion coefficient.
Abstract: In this paper, the effects of rice husk ash (RHA) and bagasse ash (8A) as cement replacement materials on thc chloride resisting properties. important to durability of concrete structures have been studied, RHA and BA have been used up to 30 % replacement by wight of cement with fixed water to binder ratio of 0.55, The properties of concrete investigated include water absorption, permeability, sorptivity, resistance to chloride ion penetration in terms of toal charge passed in coulombs and chloride diffusion coefficient. The compressivc strength of concrete containing RHA and BA were also supplemented. The specimens incorporating RHA or BA, when exposed to chloride solution exhibit significantly lower charge passed value and lesser chloride diffusion for all cement replacement levels (CRL). Overall results indicate that RHA (25-30% CRL) and BA (15-20%) blended concretes showed superior durability properties.

8 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper, the potential application of agro-waste as the ingredient for alternate sustainable construction materials is explored, based on the availability of Agro-Waste materials, sustainable construction material are evaluated for their physico-mechanical properties, methods of production and environmental impact.

374 citations

Journal ArticleDOI
TL;DR: The fly ashes contained significant levels of chloride and sulphate and it is suggested that the performance of fly ash-cement binders could be improved by the removal or control of these chemical species.

368 citations

Journal ArticleDOI
TL;DR: The authors summarizes the current state of practice with regard to the use of waste products as supplementary cementitious materials (SCM) in portland cement concrete (PCC) and provides a summary of the comparatively sparse information on underutilized waste materials such as: sugarcane bagasse ash, rice husk ash, waste wood biomass ash, and waste glass.

331 citations

Journal ArticleDOI
TL;DR: In this paper, the use of agricultural wastes as a supplementary cementitious material in the production of concrete is discussed, with the aim to minimize the negative impact of the concrete industry through the explosive usage of raw materials, the source of which are both reliable and suitable for alternative preventive solutions promotes the environmental sustainability of the industry.

311 citations

Journal ArticleDOI
TL;DR: In this article, the role of mill type and grinding circuit configuration in grinding in laboratory- and pilot plant-scale on the particle size, specific surface area and pozzolanic activity of the produced ashes was investigated.

311 citations