Effect of Shearing Rate on Residual Strength of Kaolin Clay

 

Deepak Raj Bhat

PhD Student Geo-Disaster Research Laboratory
Graduate school of Science and Engineering, Ehime University
3 Bunkyo, Matsuyama 790-8577, Japan
e-mail: deepakrajbhat@gmail.com

N. P. Bhandary

Assistant professor
Department of Civil & Environmental Engineering, Ehime University
3 Bunkyo, Matsuyama 790-8577, Japan

R. Yatabe

Professor
Graduate school of Science and Engineering, Ehime University
3 Bunkyo, Matsuyama 790-8577, Japan

 

 ABSTRACT

The change in shearing rate due to the earthquake or volcanic activities may be affected the residual strength of slip surface materials of reactive landslide or creeping landslide. Few studies have been performed to address the effect of shearing rate on residual strength. However, the rate effect mechanism on residual strength has not been clarified yet. In this study, effect on the residual strength of kaolin clay due to the change in shearing rate is investigated using a torsional ring shear apparatus. The shearing rate in the ring shear tests are varied in a range of 0.073 to 0.586 mm/min. Test results show that hardly increase in residual strength with increase in shearing rate of a kaolin clay.

Keywords: Kaolin Clay, Torsional Ring Shear Apparatus, Shearing Rate, Residual Strength.

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