Penetration and Simulation of Ultra High Performance Concrete Subjected to Repeated Projectile Impacts

Author(s): Lai Jianzhong, Wang Huifang, Yang Haoruo
Paper category: Proceedings
Book title: 1st International Conference on UHPC Materials and Structures
Editor(s): Caijun Shi and Dehui Wang
ISBN: 978-2-35158-164-3
e-ISBN: 978-2-35158-165-O
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 211-218
Total Pages: 08
Language: English

Abstract: Ultra high performance concrete (UHPC) was prepared by replacing fifty percent of cement with ultra fine industrial waste powder. The dynamic properties of UHPC were researched by repeated projectile impacts and the finite element code LS-DYNA. The penetration depth and impact damage of concrete targets were measured after each time of impact. The fracture
process of UHPC subjected to penetration was observed by high speed camera. The effects of multi-scale fibers and high strength aggregates were investigated on the ability of UHPC against repeated impacts. Results show that the resistance of UHPC to repeated penetration is improved greatly by hybrid fiber reinforcement and the penetration depth is reduced significantly by the synergistic effect of fibers and high strength coarse aggregates. The
penetration of UHPC was simulated by finite element method and the penetration depth and fracture pattern were compared with experimental results. UHPC shows excellent behavior at high strain rates and it is a wonderful material for building defensive structures.

Online publication: 2016
Publication type : full_text
Public price (Euros): 0.00

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