Effects of mixing ratio of short fibers in PVA fiber reinforced cementitious composite plates on their impact resistant performance subjected to high velocity impact

Abstract

This study presents local damage resistant performance of fiber reinforced cementitious composite plates including polyvinyl alcohol short fibers subjected to high velocity impact by a steel projectile. Effects of mixing ratio of the short fibers were examined by conducting high velocity impact tests. It was observed from the impact tests that the local damage was suppressed efficiently as the mixing ratio of the short fibers increased. The reinforcing effects were discussed based on the penetration depth and scabbing limit thickeness. An estimating method of the penetration and scabbing limit thicknesses was proposed with reduction factors multiplied by the modified NDRC formula.