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Unsaturated Effective Stress Based on Water Retention Characteristics for Triaxial Tests of Silty Sand  

Lee, Younghuy (Dept. of Civil Eng., Yeungnam University)
Oh, Seboong (Dept. of Civil Eng., Yeungnam University)
Baek, Seungcheol (Dept. of Civil Eng., Andong National University)
Kim, Sangmin (Dept. of Civil Eng., Yeungnam University)
Publication Information
Journal of the Korean GEO-environmental Society / v.14, no.1, 2013 , pp. 69-75 More about this Journal
Abstract
Suction stress is evaluated from soil water retention curves in order to deduce effective stress in unsaturated soils. $K_0$ consolidated triaxial tests were performed for silty sand to interpret effective stress in consolidation and shearing of unsaturated soils. Suction stresses from both consolidation stress and shear strength in triaxial tests were compared with those from soil water retention curves. The effective stresses on consolidation and shear strength are on each unique line, which are the same as that of the saturated case. It was found that the effective stress from soil water retention curves agrees with those from consolidation and shear strength in triaxial tests.
Keywords
Unsaturated soils; Soil water retention characteristics; Triaxial test; Suction stress; Effective stress;
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Times Cited By KSCI : 1  (Citation Analysis)
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