【作者】 刘逸平； 黄小清； 汤立群； 罗立峰；

【Author】 LIU Yi-ping1, HUANG Xiao-qing1, TANG Li-qun1, LUO Li-feng2 (1. College of Traffic and Communications, South China University of Technology, Guangzhou 510641, China; 2. Guangdong Province Highway Administration Bureau, Guangzhou 510075, China)

【机构】 华南理工大学交通学院； 广东省公路管理局；

【摘要】 利用大尺寸Hopkinson压杆对三种不同的混凝土桥面铺装材料进行了冲击压缩实验,研究了相同基准配合比下的普通混凝土、钢纤维混凝土和钢纤维增强聚合物改性混凝土材料在冲击荷载下的压缩强度,比较了三种材料的应变率敏感性,分析了掺加钢纤维和聚合物对混凝土材料冲击力学性能的影响。结果表明,钢纤维增强聚合物改性混凝土材料具有良好的冲击韧性,是一种理想的混凝土桥面铺装材料。更多还原

【Abstract】 Impact compression test on three different concrete bridge deck pavement materials is performed with a modified right cone variable cross-section SHPB. The compression strength under different impact loads of Plain Concrete(PC), Steel Fiber Reinforced Concrete(SFRC) and Steel Fiber Reinforced and Polymer Modified Concrete(SFRPMC) with the same reference mixture ratio is studied. The sensitivities of strain ratio of three materials are compared. Analysis is made to study the influence of addition of steel fiber and polymer on the dynamic mechanical behavior of concrete. The results show that Steel Fiber Reinforced and Polymer Modified Concrete having good impact properties, and it is one of the ideal pavement materials for concrete bridge deck.更多还原