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Pro053

Dynamic mechanical behaviour of ultra-high performance cementitious composites under repeated impact



Author(s): S. Wei, L. Jianzhong, R. Zhidan, Z. Yunsheng, Z. Yamei
Paper category: Workshop
Book title: Fifth International RILEM Workshop on High Performance Fiber Reinforced Cement Composites (HPFRCC5)
Editor(s): H.W. Reinhardt, A.E. Naaman
ISBN: 978-2-35158-046-2
Pages: 471 - 479
Total Pages: 9
Language: English


Abstract: 
Ecological ultra-high performance cementitious composites(UHPCC) were prepared by substitution of ultra-fine industrial waste powder for 60% cement by weight. Repeated compressive impact were on UHPCC in four kinds of impact modes with split Hopkinson pressure bar (SHPB). Standard strength of repeated impact is defined to compare the ability of resistance against repeated impact among different materials. Results show that the peak stress and elastic modulus decrease and the strain rate and peak strain increase gradually with the increase of impact times. The rate of the reduction of standard strength decreases under repeated impact by fiber reinforcement. The rate of damage is slowed down and the ability of repeated impact resistance of UHPCC is improved with the increase of fiber volume fraction.


Online publication: 2014
Publication Type: full_text
Public price (Euros): 0.00