A simplified directly determination of soil-water retention curve variables

被引：1
|
作者：
Niu, Geng [1 ,2 ]
Shao, Longtan [1 ,2 ]
Guo, Xiaoxia [1 ,2 ]
机构：
[1] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Liaoning, Peoples R China
[2] Dalian Univ Technol, Dept Engn Mech, Dalian 116024, Liaoning, Peoples R China
来源：
GEOMECHANICS AND ENGINEERING | 2020年 / 23卷 / 05期
基金：
中国国家自然科学基金;
关键词：
soil water retention curve; pore size distribution; air-entry value; residual value; soil shrinkage curve; SILTY SOIL; BEHAVIOR; SUCTION; MICROSTRUCTURE; CONDUCTIVITY; EVAPORATION; RANGE; STATE; MODEL;
D O I：
10.12989/gae.2020.23.5.431
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Soil-water retention curve (SWRC) contains key information for the application of unsaturated soil mechanics principles to engineering practice. The SWRC variables are commonly used to describe the hydro-mechanics of soils. Generally, these parameters are determined using the graphical method which can be time consuming. The SWRC is highly dependent on the pore size distribution (PSD). Theoretically, the PSD obtained by mercury intrusion porosimetry test can be used to determine some SWRC variables. Moreover, the relationship between SWRC and shrinkage curve has been investigated. A new method to determine total SWRC variables directly without curve-fitting procedure is proposed. Substituting the variables into linear SWRC equations construct SWRC. A good agreement was obtained between predicted and measured SWRCs, indicating the validity of the proposed method for unimodal SWRC.
引用
收藏
页码：431 / 439
页数：9
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