TY - JOUR
T1 - A General Best-Fitting Equation for the Multimodal Soil–Water Characteristic Curve
AU - Zhao, Yan
AU - Rahardjo, Harianto
AU - Satyanaga, Alfrendo
AU - Zhai, Qian
AU - He, Jie
N1 - Funding Information:
This study was supported by a research scholarship from the Nanyang Environment & Water Research Institute (NEWRI) and Nanyang Technological University, Singapore.
Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
PY - 2023
Y1 - 2023
N2 - The soil–water characteristic curve (SWCC) is one of the most crucial and fundamental soil properties in unsaturated soil mechanics. Many theories and equations have been developed to describe and best fit SWCC with unimodal or bimodal characteristics. In this study, a general best-fitting equation for SWCC with multimodal characteristics (bimodal and trimodal SWCC) is proposed. The parameters in the proposed equation are closely related to the properties of soil and variables in the SWCC. To evaluate the performance of the proposed equation in best-fitting multimodal SWCC that has more than two modalities, a trimodal SWCC soil mixture that consists of sand, kaolin and activated carbon has been prepared and tested in the laboratory in this study. The proposed equation has been evaluated with data from published literature and the newly developed soil mixture of trimodal SWCC. The proposed equation has shown high accuracy for best-fitting bimodal SWCC and trimodal SWCC.
AB - The soil–water characteristic curve (SWCC) is one of the most crucial and fundamental soil properties in unsaturated soil mechanics. Many theories and equations have been developed to describe and best fit SWCC with unimodal or bimodal characteristics. In this study, a general best-fitting equation for SWCC with multimodal characteristics (bimodal and trimodal SWCC) is proposed. The parameters in the proposed equation are closely related to the properties of soil and variables in the SWCC. To evaluate the performance of the proposed equation in best-fitting multimodal SWCC that has more than two modalities, a trimodal SWCC soil mixture that consists of sand, kaolin and activated carbon has been prepared and tested in the laboratory in this study. The proposed equation has been evaluated with data from published literature and the newly developed soil mixture of trimodal SWCC. The proposed equation has shown high accuracy for best-fitting bimodal SWCC and trimodal SWCC.
KW - Activated carbon
KW - Multimodal soil–water characteristic curve
KW - SWCC
KW - Unsaturated soil mechanics
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U2 - 10.1007/s10706-023-02447-z
DO - 10.1007/s10706-023-02447-z
M3 - Article
AN - SCOPUS:85152382846
SN - 0960-3182
JO - Geotechnical and Geological Engineering
JF - Geotechnical and Geological Engineering
ER -