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Contribution of rice husk ash to the performance of polymer mortar and polymer concrete

Abstract This paper presents the effect of rice husk ash (RHA) as fine filler, partially replacing sand (fine aggregate) in the composition of epoxy resin based polymer mortar (PM) and polymer concrete (PC), to make them advantageous and lessen their adverse effects on the environment. Assessment was carried out on the basis of the mechanical (compressive, flexural, tensile strength), physical (water sorption, chloride ion penetration) and morphological (porosity) properties of polymer mortar and polymer concrete. The microstructure of the PM specimens (with RHA and without RHA) is examined by scanning electron microscopy (SEM). The amount of RHA in the composition of PM and PC is optimized. The experimental result shows that the optimum replacement of sand by RHA in the composition of PM and PC has a favorable influence on mechanical, physical and morphological properties of the mortar and concrete.