期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：267
期号：4
页码：1-7
DOI：10.1088/1755-1315/267/4/042123
出版社：IOP Publishing
摘要：In order to investigate the dynamic compression characteristics of magnetite concrete under impact load, the large-diameter Φ100mm Hopkinson pressure bar test device was used to test the impact compression of magnetite concrete specimens under different strain rates, whose the experimental results were valid and consistent, and the stress-strain curves of magnetite concrete were obtained at different strain rates. The results show that: (1)the stress-strain relationship of magnetite concrete materials is nonlinear; (2)that magnetite concrete materials are obvious rate sensitive materials, whose strain rate sensitivity is lower than that of plain concrete, and the compressive strength of concrete increasing with the strain rate's increasing; (3)the failure pattern of specimen appears the splitting damage at low strain rate and the block destroy at high strain rate.
