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http://dx.doi.org/10.7843/kgs.2008.24.5.89

$K_0$ Values and Shear Strengths under $K_0$ Consolidated Triaxial Test According to Matric Suction for an Unsaturated Soil  

Kim, Tae-Kyung (Dept. of Civil Engrg., Yeungnam Univ.)
Oh, Se-Boong (School of Civil and Environmental Engrg., Yeungnam Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.24, no.5, 2008 , pp. 89-98 More about this Journal
Abstract
In this study, the behaviour of an unsaturated soil was analyzed by performing $K_0$ consolidated triaxial tests. Unsaturated triaxial tests were performed with matric suctions for weathered soils and stress paths under consolidation and stress-strain relationships under shear were obtained. As a result, the $K_0$ value decreased as the matric suction increased. Besides, both isotropic and $K_0$ conditions had similar shear strength envelopes at the same matric suction. Especially, strength parameters could be obtained by stress variables used in the critical state theory more reasonably than by those of Mohr circles at failure.
Keywords
$K_0$ condition; Matric suction; Shear strength; Triaxial tests; Unsaturated soils;
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