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Shear Strength of Weathered Granite Soil Considering Change of Saturation  

Kim, Minwook (한밭대학교 대학원)
Kim, Youngmuk (한밭대학교 공과대학 토목공학과)
Publication Information
Journal of the Korean GEO-environmental Society / v.11, no.9, 2010 , pp. 5-14 More about this Journal
Abstract
This study was aimed to suggest reliable information of shear strength characteristics due to change of saturation in the landfills or slopes during rainfall infiltration. According to the Mohr-Coulomb failure criteria, the characteristics of shear strength due to change of saturation were analyzed for the weathered residual soils which were sampled in the road construction site of Daejeon city. From the direct shear strength tests, the cohesions and the shear resistance angles were showed maximum values in the condition of optimum moisture content, and then decreased in the condition of wet side compaction. In this study, the cohesions were decreased more than 50% according to increasing saturation by infiltration for the compaction soils. But the reductions of the shear resistance angles were about $1{\sim}2^{\circ}$ which was small value, and thus the changes of the saturation were not nearly influenced the shear resistance angle. The influences of the saturation were seemed to very small for the residual strength parameters according to Mohr-Coulomb failure criteria.
Keywords
Weathered granite soils; Shear strength; Residual shear strength; Degree of saturation;
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Times Cited By KSCI : 2  (Citation Analysis)
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