Estimation of the hydraulic conductivity of unsaturated soil incorporating the film flow
Zhai Q. Ye W. Rahardjo H. Satyanaga A. Du Y. Dai G. Zhao X.
2022Canadian Science Publishing
Canadian Geotechnical Journal
2022#59Issue 91679 - 1684 pp.
In the conventional method for the estimation of the hydraulic conductivity of unsaturated soil, only the capillary water is considered in the estimation. However, it is known that a water film can be formed around soil particles due to the adsorptive force. The water may migrate in the soil through the water film. As a result, both water flow in the capillary water and water film should be considered in the estimation. In this paper, a new equation was proposed for the estimation of the hydraulic conductivity of unsaturated soil by considering the film flow. The proposed method was verified with the experimental data from the literature. It is recommended that both capillary water flow and film flow should be considered in the estimation of the hydraulic conductivity of unsaturated soil.
capillary flow , estimation , film flow , hydraulic conductivity
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Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing, 210096, China
Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai, 200092, China
School of Civil and Environmental Engineering, Nanyang Technological University, Block N1, Nanyang Ave., Singapore, 639798, Singapore
Department of Civil and Environmental Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave., 53, Nur-Sultan, 010000, Kazakhstan
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education
Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education
School of Civil and Environmental Engineering
Department of Civil and Environmental Engineering
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