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Experimental Set-up for Investigation of Internal Erosion in Geosynthetic Clay Liners

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Authors
Budihardjo, Mochamad
Chegenizadeh, Amin
Nikraz, Hamid
Date
2012
Type
Journal Article

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Budihardjo, Mochamad and Chegenizadeh, Amin and Nikraz, Hamid. 2012. Experimental Set-up for Investigation of Internal Erosion in Geosynthetic Clay Liners. International Journal of Biological, Ecological and Environmental Sciences 1 (3): pp. 113-116.
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International Journal of Biological, Ecological and Environmental Sciences
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This article is published under the Open Access publishing model and distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/ Please refer to the licence to obtain terms for any further reuse or distribution of this work.

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Abstract

Some factors that can potentially reduce the performance of geosynthetic clay liners (GCLs) and trigger an internal erosion of the GCL are high gradient, subgrade and confining pressure. Previous studies mainly investigated the internal erosion occurrence by monitoring the hydraulic conductivity with water flow coming from above. In this research, the opposite directions of water pressure were also applied to the sample. This experiment also sought some visual evidences and behavior of bentonite migration. The result indicated that internal erosion did not occur in the GCLs sample, however further investigation should be carried out since a sidewall leakage happened during the test.