Impact Response of Ultra-High-Performance Reinforced Concrete Plates

An experimental investigation has been conducted to collect fundamental data and to develop more understanding of the dynamic response of ultra-high-performance fiber-reinforced concrete (UHP-FRC) plates. Six reinforced plates with identical dimensions are tested using multi-impact technique by dropping a 475.00 kg (1047.20 lb) steel weight from a clear height of 4.15 m (13.60 ft). Three parameters are investigated: concrete type, fiber volume content, and steel reinforcement ratio. The results of this investigation confirmed that UHP-FRC plates exhibited superior damage control characteristics compared to high-strength concrete (HSC) plates. Increasing the fiber content was shown to improve the dynamic performance of the UHP-FRC plates, resulting in reduced peak and residual displacements at the same impact loads and an increase in the specimen's ability to sustain increased impact energy capacity before failure. The test results showed that steel reinforcement played an important role in specimens' overall behavior and increasing impact capacity.