Evaluation of material performance of coir fibre reinforced quaternary blended concrete

Abstract

The experimental investigation was conducted to evaluate the impact of coir fibre of quaternary blended concrete on strength and durability performance. M35 grade of concrete was considered in this study. Fly ash, Granite powder and Nano silica were considered for developing the quaternary blended concrete. Fly ash and Granite powder were added as partial replacement of cement by 25% and 10% respectively and Nano-silica was considered as third mineral admixture varies from 0 to 2% of cementitious content. In order to improve the ductility of concrete, the coir fibres are supplemented in concrete at 0.25, 0.5, 0.75, 1.0, and 1.25% by volume of concrete. The performance of hardened concrete was examined in terms of compressive strength, rebound hammer test, flexural strength and durability was examined by sorptivity test. The results showed that the addition of coir fibres causes the reduction of slump value but improve the mechanical properties up to 1% addition of coir fibres in concrete. The sorptivity of Nano-silica blended quaternary blended concrete is increased up to 15% with the presence of 1% coir fibre.