Abstract
The disposal of solid waste in open environment is a serious alarming concern that needs immediate attention from the researchers. The hazardous solid agro-industrial wastes which include: wheat straw ash, rice husk ash, corn cob ash and sugarcane bagasse ash (SCBA), having pozzolanic properties, have a versatile use in concrete. The solid pozzolana enhances the various concrete properties by the reaction of silicates with calcium hydroxide in the presence of water, which in result generate a saturated zone of calcium silicate hydrate (CSH) gel. This C-S-H gel reduces the amount of calcium hydroxide C(OH)2 during the hydration process of cement. Very limited research works have been done on concrete by partially replacing cement with SCBA. This research work was focused on evaluating the properties of concrete by partially replacing cement with SCBA at 0, 5, 10, and 15 percentages. Compressive strength, Strength activity index, and water absorption of all mixes were examined. And it was observed that all SCBA mixes showed an increase in compressive strength and at 10% replacement the strength activity index was at a peak of 115.67%, but all the SCBA mixes showed a strength activity index greater than 75% which satisfied the standard specification. The water absorption test for all SCBA mixes showed a slight increase in water absorption.
Highlights
I n the production of concrete, various materials and re-sources are utilized
The study presented in this paper aims to check the effectiveness of sugarcane bagasse ash (SCBA) as sup-plementary cementitious material on conventional concrete with 0%, 5%, 10%, and 15% replacement of cement
Strength enhancement started at a replacement level of 5% and was optimum at 10% replacement of cement with SCBA, and showed a reduced value at 15%
Summary
I n the production of concrete, various materials and re-sources are utilized. The process in cement production, pyro-processing (heating raw materials above 1000◦C to bring physical and chemical changes to the parent material), emits various amounts of gases and utilizes a huge quantity of resources as fuel [1]. There are two requirements of an engineer during any construction project: protecting the environment, and fulfilling the infrastructural requirements of the occupants. To fulfil the occupant’s requirements, many resources are being utilized by the construction industry, which result in creating environmental dangers and hazards [2]. Produced metakaolin [11][12]. These materials enhance the behaviour of concrete and contribute to an ecofriendly environment [13][14]
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