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http://dx.doi.org/10.7843/kgs.2012.28.4.91

Effect on Matric Suction in Soils due to Hysteretic Soil Water Characteristic Curves  

Kim, Jae-Hong (Dept. of Civil Engineering, Chonbuk National Univ.)
Hwang, Woong-Ki (Dept. of Civil and Environmental Engineering, Korea Maritime Univ.)
Song, Young-Suk (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Kim, Tae-Hyung (Dept. of Civil Engineering, Korea Maritime Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.28, no.4, 2012 , pp. 91-100 More about this Journal
Abstract
Soil-water characteristic curves (SWCCs), which represent a physical property in partially saturated soils, show the relation between volumetric water content and matric suction. The SWCCs exhibit hysteresis during wetting and drying, however experimental expressions used to describe SWCCs have generally ignored the hysteresis. In addition, the shape of SWCC may depend on the void ratio which is changed by soil skeleton deformations or hysteretic behavior under various loading conditions. Hence, it is necessary to understand, both empirically and analytically, the relationship between soil skeleton deformations and the SWCCs of various soils. The typical SWCCs experimentally have drying, wetting, and the second drying curve. The measurement of a complete set of hysteretic curves is severely time-consuming and difficult works, then the first drying curve of SWCC is generally determined to estimate the hydraulic conductivity and shear strength function of partially saturated soils. This paper presents the hydraulic-mechanical behavior of partially saturated soils (weathered soil and silty soil) for volume changes and hysteresis in SWCCs regarding the difference between the first drying and wetting curve.
Keywords
Hydraulic-mechanical behavior; Hysteresis; Partially saturated soil; Soil-water characteristic curve;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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