水泥砂浆在围压下的动态力学性能  

DYNAMIC BEHAVIOR OF CEMENT MORTAR UNDER CONFINEMENT

作　　者：薛志刚[1] 胡时胜[1] 

机构地区：[1]中国科学技术大学中国科学院材料力学行为和设计重点实验室,合肥230026

出　　处：《工程力学》2008年第12期184-188,201,共6页Engineering Mechanics

摘　　要：水泥砂浆在不同应力状态、不同加载条件下,表现出截然不同的力学性能。利用分离式霍普金森压杆做了一维应力、被动围压和主动围压下水泥砂浆的冲击压缩实验,分别得到了这三种加载条件下的应力-应变曲线,讨论了应力状态、加载条件及应变率对水泥砂浆力学性能的影响,最后研究了用于描述水泥砂浆塑性的破坏准则。The mechanical behavior of cement mortar are strongly affected by its stress state and loading conditions. Compressive experiments of the cement mortar using Split Hopkinson Bar under one-dimensional, passive confined and active confined conditions were carded out, and the stress-strain curves were obtained. The affects of the stress state, loading conditions and the strain rate on the mechanical behavior of cement mortar were also discussed. Finally, a failure criterion was developed to describe the plastic behavior of cement mortar.

关 键 词：水泥砂浆 围压 分离式霍普金森压杆 动态力学性能 破坏准则 

分 类 号：O344.1[理学—固体力学] TU528.45[理学—力学]