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Strength and sulphate resistance of rice husk ash concrete

Cost-effective and sustainable mix design


The huge emission of CO2 during the production of cement is prompting researchers to adopt a supplementary cementitious material for the production of concrete. Rice husk ash is a highly pozzolanic material which can be used for this purpose. Addition of rice husk ash to Portland cement forms a calcium silicate hydrate (C-S-H) gel around the cement particles which is highly dense and less porous. Apart from the pozzolanic effect, the particle size of rice husk ash provides a filler effect which improves the durability of concrete. In this paper, properly burnt and grinded rice husk ash has been replaced by 10%, 15%, 20%and 30% weight of cement in the production of ordinary concrete. The hardened properties of rice husk ash concrete are evaluated by compressive test, split tensile test, flexural test, and pull out test along with sulphate resistance test which is performed to assess the durability properties of hardened rice husk ash concrete.

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CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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