Effect on addition of Polypropylene fibers in wood ash-fly ash based geopolymer concrete

Abstract

Abstract In this study, optimization of wood ash and fly ash by varying 0-100% of both in GPC were carried out by testing the concrete for compressive strength. From the previous literatures it could be noted that, GPC had a less brittleness and energy absorbent. To improve the brittleness and energy absorption capacity polypropylene fibre were added by 0, 0.5, 1, 1.5, and 2 % of volume fraction. Further, effects on addition of polypropylene of the optimized wood ash-fly ash based Geopolymer were studied. In this study, the mechanical properties such as compressive strength, tensile strength, flexural strength of geopolymer concrete were investigated. The results showed that, 30% replacement of wood ash increased the compressive strength by 12.2% than the conventional mix. Further, addition of 1 % of PP fibre had also increased the compressive strength, tensile strength, flexural strength by 3.7%, 15.6% and 5.13% respectively.