Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/146753
Title: Estimation of air permeability function from soil-water characteristic curve
Authors: Zhai, Qian
Rahardjo, Harianto
Satyanaga, Alfrendo
Keywords: Engineering::Civil engineering
Issue Date: 2019
Source: Zhai, Q., Rahardjo, H., & Satyanaga, A. (2019). Estimation of air permeability function from soil-water characteristic curve. Canadian Geotechnical Journal, 56(4), 505-513. doi:10.1139/cgj-2017-0579
Journal: Canadian Geotechnical Journal
Abstract: The multiphase flow (including liquid flow and air flow) in unsaturated soil is related to many engineering problems such as contaminant transport, rainwater infiltration, and soil-water evaporation. It is proven that water flow in unsaturated soil can be estimated using the concept of the pore-size distribution function. Many models have been proposed to estimate the water flow or water permeability function, kw, from the soil-water characteristic curve (SWCC). On the other hand, a limited model has been proposed to estimate the air flow or air permeability function, ka, from the SWCC. Most of the models used for the estimation of the air permeability functions are empirical, and they are dependent on the empirical parameters. In this paper, the relative air coefficient of permeability was estimated using the concept of the pore-size distribution function. In the method proposed in this paper, no empirical parameters were adopted, and the estimation results purely depended on the soil-water characteristic curve. The proposed method was verified against experimental data from published literature.
URI: https://hdl.handle.net/10356/146753
ISSN: 0008-3674
DOI: 10.1139/cgj-2017-0579
Rights: © 2019 Canadian Science Publishing. All rights reserved. This paper was published in Canadian Geotechnical Journal and is made available with permission of Canadian Science Publishing.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles

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