The Effect of the Loading Rate on Stress-Strain Characterization of Tuff
Yuichi KOHMURA and Yoshinori INADA
Abstract:Much research has been carried out on the time-dependent behavior of rocks. It is well known that uni axial compressive strength increases as the strain rate becomes larger. Rock in general mainly contains microscopic cracks. In process to failure, cracks seem to develop parallel to the loading direction from the tip of microscopic cracks. Therefore, it is important to pay attention to the behavior of the circumferential strain when the time-dependency of stress-strain characteristics of rocks is examined. In this study the uni axial compression test are carried out using tuff , and the effect of stress rate on the stress-strain behavior is described. Key Words:Stress rate, Tuff, Stress-strain characteristics, Uni axial compression test, Time-dependency