Modified Model for Hydraulic Conductivity of Clayey Soil under Shear
Publication: International Journal of Geomechanics
Volume 19, Issue 11
Abstract
Both experimental studies and engineering practices have indicated that shear effects significantly influence the permeability of clayey soil. In this study, to ameliorate the imperfections in a previous study, a series of tests were conducted on five different clayey soils by using the improved triaxial seepage apparatus and test method to measure the hydraulic conductivity of clayey soils under shear effect. Based on the test results, a modified mathematical model is proposed to describe the shear effect on the permeability of clayey soil. The new model uses generalized shear strain instead of stress level as the indicator of shear effect. Experimental results show that the new model fits well in predicting the hydraulic conductivity of clayey soil under shear, which indicates that the modified model has more general applicability.
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Acknowledgments
This work was supported by the National Key R & D Program of China (No. 2017YFC0404802, 2017YFC0804602) and the National Natural Science Foundation of China (No. 51379103, 51479099).
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Published In
International Journal of Geomechanics
Volume 19 • Issue 11 • November 2019
Copyright
© 2019 American Society of Civil Engineers.
History
Received: Oct 30, 2018
Accepted: Apr 12, 2019
Published online: Sep 13, 2019
Published in print: Nov 1, 2019
Discussion open until: Feb 13, 2020
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