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Influence of Rice Husk Ash in Geopolymer Concrete– a Review

Adetoye Olubunmi A1 Oladejo Jerry S2
1Student, M. Eng, (Structural Engineering), Department of Civil Engineering, Faculty of Engineering, Abubakar Tafawa Balewa University, Bauchi, Nigeria. 2 Graduate, Department of Civil Engineering, Faculty of Engineering, Abubakar Tafawa Balewa University, Bauchi, Nigeria.

Published Online: September-October 2022

Pages: 01-07

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Abstract

The production of portland cement leads to the pollution of the environment by the release of large amount of CO2 to the atmosphere. This give rise to the extensive research work on materials with low carbon footprint as substitute to port land cement. Geopolymer concrete is presently studied extensively as a substitute to Portland cement. This paper briefly reviews the influence of rice husk ash in Geopolymer concrete, its strength and potential application. From the review, it was concluded that RHA improves the mechanical properties of Geopolymer concrete at optimum curing temperature of 75 ⁰C and completed within 7 days to obtain the maximum strength. GPC exhibits better mechanical properties when compared to Portland cement concrete and has a good resistance to sulphate attack which makes it useful in marine structures. The addition of RHA in Geopolymer concrete enhances durability, compressive and tensile strength of concrete. The increase in the percentage of RHA reduces the workability of Geopolymer concrete but can be improved upon by the addition of super-plasticizers. Keywords: Geopolymer concrete, Rice husk ash, Workability, Durability, Curing, Fly ash.

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