Hysteresis of unsaturated hydromechanical properties of a silty soil
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Abstract
Laboratory tests to examine hysteresis in the hydrologic and mechanical properties of partially saturated soils were conducted on six intact specimens collected from a landslide-prone area of Alameda County, California. The results reveal that the pore-size distribution parameter remains statistically unchanged between the wetting and drying paths; however, the wetting or drying state has a pronounced influence on the water-entry pressure, the water-filled porosity at zero suction, and the saturated hydraulic conductivity. The suction stress values obtained from the shear-strength tests under both natural moisture and resaturated conditions were mostly bounded by the suction stress characteristic curves (SSCCs) obtained from the hydrologic tests. This finding experimentally confirms that the soil-water retention curve, hydraulic conductivity function, and SSCC are intrinsically related.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Hysteresis of unsaturated hydromechanical properties of a silty soil |
| Series title | Journal of Geotechnical and Geoenvironmental Engineering |
| DOI | 10.1061/(ASCE)GT.1943-5606.0000786 |
| Volume | 139 |
| Issue | 3 |
| Year Published | 2013 |
| Language | English |
| Publisher | American Society of Civil Engineers |
| Contributing office(s) | Geology and Geophysics Science Center |
| Description | 4 p. |
| First page | 507 |
| Last page | 510 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |