爆炸与冲击2011，Vol.31Issue(4)：402-406,5.
聚苯乙烯混凝土动态劈裂实验
Dynamic splitting test of expanded polystyrene (EPS) concrete
摘要
Abstract
To explore the splitting strength of expanded polystyrene (EPS) concrete with the different volume concentrations of EPS, Brazilian disc specimens were diametrally impacted by using a 74-mm-diameter split Hopkinson pressure bar (SHPB) at different impact velocities. For each volume concentration of EPS, the Brazilian disc specimens were tested in the cases of two different particle sizes of EPS, respectively. And accurately designed cushions were placed in the interspaces between the input and output bars and the specimens to prevent the specimens from being crushed due to the stress concentration at the two ends of the specimens. At the same time, an appropriate pulse shaper was used to ensure enough time for the specimens to reach an equilibrium stress state during the experiment. And the splitting failure patterns of EPS concrete were analyzed. The results display that the splitting strength of EPS concrete increases with the increase of stress rate; and that in the EPS concrete with the low volume concentration of EPS, the splitting strength of EPS concrete takes on a certain particle size effect, and this effect disappears gradually with the increase of the EPS volume concentration.关键词
固体力学/劈裂强度/分离式Hopkinson压杆/EPS混凝土Key words
solid mechanics/ splitting strength/ spilt Hopkinson pressure bar(SHPB)/ EPS concrete分类
数理科学引用本文复制引用
胡俊,巫绪涛..聚苯乙烯混凝土动态劈裂实验[J].爆炸与冲击,2011,31(4):402-406,5.基金项目
安徽高校省级自然科学研究重点项目(KJ2010A270) （KJ2010A270）
