Chapter
Apr 26, 2012
Dynamic Capillary Effect and Its Impact on the Residual Water Content in Unsaturated Soils
Authors: Chen Hui [email protected], Wei Changfu [email protected], Cao Huafeng [email protected], Wu Erlin [email protected], and Li Huan lhfantasy_81 @163.comAuthor Affiliations
Publication: GeoFlorida 2010: Advances in Analysis, Modeling & Design
Abstract
The soil-water characteristic curve of an unsaturated soil is usually measured at equilibrium or steady state. The measurement based on the conventional methods is time-consuming. Alternatively, multistep outflow tests can be introduced to determine the soil-water characteristic curve. In this paper, the presence of dynamic capillary effects during multistep outflow experiments is illustrated, its impact on the residual water content is discussed, and a theoretical model is developed to simulate the testing results. Finally, an effective procedure is presented to determine the equilibrium SWCC curve based on the results of a non-equilibrium outflow test. Compared to the conventional methods, the proposed procedure can save significant experimental time in determining the SWCC curve.
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© 2010 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuchang Xiao Hong Shan, Wuhan, Hubei 430071, China.E-mail: [email protected]
State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuchang Xiao Hong Shan, Wuhan, Hubei 430071, China.E-mail: [email protected]
State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuchang Xiao Hong Shan, Wuhan, Hubei 430071, China.E-mail: [email protected]
State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuchang Xiao Hong Shan, Wuhan, Hubei 430071, China.E-mail: [email protected]
State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuchang Xiao Hong Shan, Wuhan, Hubei 430071, China.E-mail: lhfantasy_81 @163.com
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