Structures

Performance of UHPFRC Plates under Repeated Impact Load

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Abstract

An experimental investigation has been conducted to collect fundamental data and to develop more understanding of the dynamic response of UHPFRC plates. Six reinforced plates with identical dimensions are tested using multi-impact technique by dropping a 475 kg (1047.20 Ib) steel weight from a clear height of 4.15 m (13.60 ft). Three parameters are investigated: concrete type; fibers volume content; and steel reinforcement ratio. The results of this investigation have confirmed that UHPFRC plates exhibited superior damage control characteristics compared to high-strength concrete (HSC) plate. Increasing the fiber content was shown to improve the dynamic performance of the UHPFRC plates, resulting in reduced peak and residual displacements at same impact loads and an increase in the specimen 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.

Keywords: drop-weight impact, reinforcement ratio, steel fiber content, impact energy, crack pattern, UHPFRC

How to Cite:

Marzouk, H. & Othman, H., (2016) “Performance of UHPFRC Plates under Repeated Impact Load”, International Interactive Symposium on Ultra-High Performance Concrete 1(1). doi: https://doi.org/10.21838/uhpc.2016.95