Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/86682
Title: Effects of residual suction and residual water content on the estimation of permeability function
Authors: Zhai, Qian
Rahardjo, Harianto
Satyanaga, Alfrendo
Keywords: Unsaturated Soil
Soil-water Characteristic Curve
Issue Date: 2017
Source: Zhai, Q., Rahardjo, H., & Satyanaga, A. (2017). Effects of residual suction and residual water content on the estimation of permeability function. Geoderma, 303, 165-177.
Series/Report no.: Geoderma
Abstract: Soil-water characteristic curve (SWCC), which defines the relationship between water amount in the soil and matric suction, contains key information for the application of unsaturated soil mechanics principles to engineering practice. Best fit equations are commonly used for representation of the SWCC for unsaturated soils. Normally, these best fit equations are mathematically continuous and governed by a few fitting parameters. Either volumetric water content, θw or normalized volumetric water content, Θ, is adopted in the different best fit equations. If θw is used to establish SWCC, the parameter related to residual suction, Cr needs to be defined prior to fitting process of SWCC data. On the other hand, if Θ is used to develop SWCC, the residual volumetric water content, θr, needs to be defined prior to fitting process of SWCC data. Results of analyses in this study indicate that the performance of the best fit equation is not affected by the value of Cr, but it is significantly affected by the value of θr. As a result, the performance on the estimation of the permeability function is also affected by the value of θr. Different types of soils are used to investigate the effect of Cr and θr on the performance of the best fit equation and the estimation of the permeability function.
URI: https://hdl.handle.net/10356/86682
http://hdl.handle.net/10220/44117
ISSN: 0016-7061
DOI: 10.1016/j.geoderma.2017.05.019
Rights: © 2017 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Geoderma, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.geoderma.2017.05.019].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles

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