Resistance of an Optimized Ultra-High Performance Fiber Reinforced Concrete to Projectile Impact

The scope of this paper is to investigate the performance ultra-high fiber reinforced concrete (UHPFRC) slabs, under projectile impact. Mixture impact loading was examined using bullets with 7.62 mm diameter and initial velocity 800 m/s. UHPFRC, used in study, consists a combination steel fibers two lengths: 6 13 same 0.16 mm. Six composition mixtures were tested, four one (UHPC), without fibers, high strength (HSC). Slabs thicknesses 15, 30, 50, 70 produced subjected real shotgun fire field. Penetration depth, material volume loss, crater measured analyzed. test results show that mixture 3% length exhibited best resistance only slabs 15 thickness had perforation. Empirical models predict depth penetration compared experimental results. This can be as an overlay buildings or construct small precast structures.