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http://dx.doi.org/10.7843/kgs.2020.36.12.117

Distorted Bounding Surface of Clay with Consideration of the Effect of Temperature on Shearing Response  

Woo, Sang Inn (Dept. of Civil and Environmental Engrg., Hannam Univ.)
Yune, Chan-Young (Dept. of Civil Engrg., Gangneung-Wonju National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.36, no.12, 2020 , pp. 117-124 More about this Journal
Abstract
The present research focuses on a methodology to describe shearing response of clay with respect to temperature. An increase of temperature shifts the normal consolidation line to move down in the plane of void ratio and mean effective stress. The critical state line, however, does not move as much as the normal consolidation line in accordance with temperature increase. As temperature increase, therefore, the difference between the critical state mean effective stress and the pre-consolidation pressure reduces. To reflect this easily, the present study applies a bounding surface consisting of two parts divided by the critical state mean effective stress. This study calibrated a bounding surface for the soft Bangkok clay and performed elemental simulation for undrained triaxial compression tests. The elemental simulation showed that the model can describe the mechanical response upon temperature of clay without complex hardening and evolution rules compared to the experimental data.
Keywords
Critical state; Clay; Modified cam clay; Temperature; Undrained triaxial tests;
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