In this paper. the partial replacement of volcanic pumice powder (VPP) was investigated for use as a supplementary cementitious material. High-strength concrete (HSC) was prepared using two sets of VPP (10% and 20%) incorporated with three sets of polypropylene fiber (PF) (0. 20%. https://www.roneverhart.com/Krave-Glass-Beaker-Orb-FREE-GRINDER/