Effect of nano silica and coir fiber on compressive strength and abrasion resistance of Concrete

Abstract

This research investigates the effect of nano silica and coir fiber on compressive strength and abrasion resistance of concrete. In this study, Coir fiber has been added in the concrete with the variation of 0.25%, 0.5%, and 0.75% by the weight of the fine aggregates and 2% and 3% nano silica along with 15% fly ash which has partially replaced cement in the concrete mixture. Different samples with varying percentages of nano silica and coir fiber have been prepared to keep water to binder ratios like 0.47, 0.45 and 0.42 for calculating the compressive strength and abrasion resistance and results have been compared with the controlled specimens. It is reported that the optimum dosage of coir fiber and nano silica is 0.25% and 3%, respectively which provides approximate equal abrasion resistance as compared to the conventional concrete sample.