CA砂浆动态力学性能试验研究  

Test study of the dynamic mechanical properties of CA mortar

作　　者：庞有超[1,2] 王武[2] 张春晓[2] 张磊[2] 

机构地区：[1]中国科技大学近代力学系,合肥230027 [2]总参工程兵科研三所,洛阳471023

出　　处：《防护工程》2013年第2期15-19,共5页Protective Engineering

摘　　要：利用材料力学试验机和大直径分离式霍普金森杆，研究了CA砂浆在不同应变率下的力学性能。试验结果表明：（1）CA砂浆具有明显的应变率效应，应变率越高，动态强度越高；（2）CA砂浆具有良好的缓冲耗能性能，在强度退化后仍能承受较大变形。推导出了在高应变率下CA砂浆抗压强度的幂函数表达式。To explore the static and dynamic mechanical properties of CA mortar, uniaxial compression tests were carried out by using a material mechanical testing machine and the split Hopkinson pressure bar technique. The results show that （1） the mechanical behavior of CA mortar depends on strain rate; （2） CA mortar has energy absorption capacity because it can bear large deformation even after failure. The strength of CA mortar has been gained and it will increase as the strain rate rises.

关 键 词：水泥乳化沥青砂浆 分离式Hopkinson压杆(SHPB) 应变率 动力增大系数(DIF) 

分 类 号：O348[理学—固体力学]