混凝土动态受压力学性能的试验研究

Experimental study on the dynamic compressive properties of concrete

混凝土作为建筑上应用范围最为广泛的材料,动态力学性能的研究对其充分发挥其抗压性能、提高其安全的性能和降低建筑成本变得至关重要。采用改进的美国MTS液压伺候加载系统对70 mm×70 mm×200 mm的标准棱柱体混凝土试件进行单轴加载试验,客观的完成了从1×10-5/s到1×10-2/s 4个不同数量级范围内的混凝土受压试验,成功得到不同的应变速率下典型的应力-应变全曲线,从而使基本受压性能得到综合的宏观反应。

Abstract： In construct,concrete as the most widely application range of materials,the research on dynamic mechanical properties give full play to concrete compressive performance, so it become critical to improve safety and reduce the construction cost.Use the improved Hydraulic minister load- ingsystem （MTS）of America proceed single axis loading experiment to standard prism body concrete samples （70 mmx70 mmx200 mm）.Objec-tively, It completed four different order of magni rude within the scope of the concrete compression experiment which process from 1 x 10-S/s to 1 x 10-Z/s,it get the typical stress-strain curve which in different strain rate successfully, so that the basic properties of concrete under pressure get comprehensive macroscopic reaction.