CLC number: TU42; P66; P67
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2018-11-27
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Qian Zhai, Harianto Rahardjo, Alfrendo Satyanaga, Priono, Guo-liang Dai. Role of the pore-size distribution function on water flow in unsaturated soil[J]. Journal of Zhejiang University Science A, 2019, 20(1): 10-20.
@article{title="Role of the pore-size distribution function on water flow in unsaturated soil",
author="Qian Zhai, Harianto Rahardjo, Alfrendo Satyanaga, Priono, Guo-liang Dai",
journal="Journal of Zhejiang University Science A",
volume="20",
number="1",
pages="10-20",
year="2019",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1800347"
}
%0 Journal Article
%T Role of the pore-size distribution function on water flow in unsaturated soil
%A Qian Zhai
%A Harianto Rahardjo
%A Alfrendo Satyanaga
%A Priono
%A Guo-liang Dai
%J Journal of Zhejiang University SCIENCE A
%V 20
%N 1
%P 10-20
%@ 1673-565X
%D 2019
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1800347
TY - JOUR
T1 - Role of the pore-size distribution function on water flow in unsaturated soil
A1 - Qian Zhai
A1 - Harianto Rahardjo
A1 - Alfrendo Satyanaga
A1 - Priono
A1 - Guo-liang Dai
J0 - Journal of Zhejiang University Science A
VL - 20
IS - 1
SP - 10
EP - 20
%@ 1673-565X
Y1 - 2019
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1800347
Abstract: The hydraulic properties of soil (i.e. soil-water characteristic curve (SWCC) and coefficient of permeability) govern the moisture flow in it. Previous research has indicated that the hydraulic properties of soil are dependent on its pore-size distribution. An improved capillary model is now proposed to explain the concept of the pore-size distribution in soil and its relationship to SWCC. A new model, the “valve model”, is also proposed as the explanation for water flow in unsaturated soil. The pore-size distribution function is incorporated in the “valve model” and is used to calculate the relative coefficient of permeability for unsaturated soil. In this paper, the role of the pore-size distribution function in the estimation of SWCC and the permeability function are explained. Equations are proposed for estimating the pore-size distribution function from the experimental data of relative coefficient of permeability. The results from the proposed equations agree with the experimental data from laboratory measurement and published data.
The submitted manuscript has significant value to the geotechnical engineering community.
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