Please use this identifier to cite or link to this item:
http://hdl.handle.net/10497/21304
Title: | Authors: | Subjects: | Unsaturated soil Hydraulic anisotropy Permeability Soil-water characteristic curve Laboratory experiment |
Issue Date: | 2017 |
Citation: | Priono, Harianto Rahardjo, Chatterjea, K., & Leong, E., -C. (2017). Laboratory investigation on hydraulic anisotropy behavior of unsaturated soil. Canadian Geotechnical Journal, 54(7), 1034-1046. https://doi.org/10.1139/cgj-2016-0023 |
Abstract: | Hydraulic anisotropy behavior of unsaturated soil has not been fully investigated. Direct laboratory measurement and indirect determination of hydraulic anisotropy under drying condition were carried out on statically compacted specimens having different initial conditions. Direct measurement of permeability was carried out using unsaturated triaxial permeameter whereas indirect determination of permeability was performed through statistical estimation via measured drying soil-water characteristic curve (SWCC). In this research, two orientations, specifically horizontal-layering (HL) and vertical-layering (VL) orientations were prepared for a given specimen from statically compacted homogeneous sand-kaolin. The results from both direct measurement and indirect determination of hydraulic anisotropy were in a good agreement. Hydraulic anisotropy under unsaturated condition was found to be similar with that in saturated condition. Moreover, hydraulic anisotropy was reflected in the ratio of transient time during the direct measurements of HL and VL specimens at high matric suctions. On the other hand in the indirect method, hydraulic anisotropy was reflected in the ratio of equalization time during SWCC tests at matric suctions higher than the air-entry value of the soil. |
Description: | This is the final draft, after peer-review, of a manuscript published in Canadian Geotechnical Journal. The published version is available online at https://doi.org/10.1139/cgj-2016-0023 |
URI: | ISSN: | 0008-3674 (print) 1208-6010 (online) |
DOI: | File Permission: | Open |
File Availability: | With file |
Appears in Collections: | Journal Articles |
Files in This Item:
File | Description | Size | Format | |
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CGJ-24-7-1034.pdf | 2.25 MB | Adobe PDF | View/Open |
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