Strain Softening Behaviors of Concrete Materials under Compressive Rapid Loading

摘要

This study is to investigate the strain softening behaviors of concrete material in compression under rapid loadings. The restraint condition of both ends of a specimen and the strain-rate are chosen as test parameters. From test results, the effects of these parameters on the pre-peak behaviors and the stress softening behaviors (i.e., post-peak behaviors) of concrete are examined. To measure precisely the strain in the softening region after the maximum stress, the use of a strain measuring rod, called SMR, is proposed in this study.