載荷速度が凝灰岩の応力－ひずみ特性に及ぼす影響

抄録

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.