Paper Title:

Impact Experimental Study for Dynamic Character of Reactive Powder Concrete

Periodical Advanced Materials Research (Volumes 261 - 263)
Main Theme Advances in Building Materials
Edited by Jingying Zhao
Pages 187-191
DOI 10.4028/www.scientific.net/AMR.261-263.187
Citation Wan Peng Wang et al., 2011, Advanced Materials Research, 261-263, 187
Online since May, 2011
Authors Wan Peng Wang, Yong Le Hu, Xin Tao Ren, Yi Bo Xiong, Kang Zhao, Xiao She
Keywords Failure Pattern, Impact Compression, Impact Split Tension, Reactive Powder Concrete (RPC), Split Hopkinson Pressure Bar (SHPB)
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Abstract

In order to systematically study dynamic mechanics character of reactive powder concrete (RPC), impact compression experiments and impact flattened Brazilian disc specimens of RPC have been investigated with modified split Hopkinson pressure bar (SHPB) experimental facility using brass pulse shaper, curves about stress versus strain and other parameters at strain rates of 20.3/s~137.0/s were obtained from impact compression. The dynamic tensile strength and tensile failure strain at strain rates of 3.4/s~26.2/s were obtained from impact flattened Brazilian. For comparison, the quasi-static compress and split tension of RPC were obtained with an MTS 810 materials test system and CSS-88500 electron universal material testing machine.The experimental result show that dynamic compression strength , elastic modulus and failure strain,dynamic tensile strength and failure strain significantly increase comparing to quasi-static experiment, RPC have the character of impact harding and ductility enhancement. RPC exhibit excellent failure patterns at high strain rate. Whether impact compression or impact splitting under strain rate including this paper ’s experiments, the relationship between the DIFC or DIFT and the logarithm of strain rateis linear.