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Self-Healing Properties of Geosynthetic Clay Liners

Babu, Sivakumar GL and Sporer, H and Zanzinger, H and Gartung, E (2001) Self-Healing Properties of Geosynthetic Clay Liners. In: Geosynthetics International, 8 (5). pp. 461-470.

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The sealing effect and containment of moisture in landfill covers and liners containing geosynthetic clay liners (GCLs) are largely influenced by moisture retention, swelling, and the self-healing behaviour of bentonite used in GCLs. The method of binding of GCLs also significantly affects the behaviour. To examine these aspects, percent swell and swell pressure tests under different effective pressures were conducted on two sodium-based GCLs. Permittivity tests were performed on GCL specimens with different hole diameters and also on specimens dried at 20 and 60oC. The test results are presented and discussed. The study shows that the GCLs considered have a good self-healing capacity for the case of desiccation cracks or punctures. In addition, the method of binding the GCL components, i.e., stitch-bonded or needlepunched, has a significant influence.

Item Type: Journal Article
Publication: Geosynthetics International
Publisher: International Geosynthetics Society (IGS)
Additional Information: Copyright of this article belongs to International Geosynthetics Society (IGS).
Keywords: Geosynthetic clay liner;Self healing;Swell;Bentonite;Permittivity test.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 07 Aug 2008
Last Modified: 27 Aug 2008 13:42
URI: http://eprints.iisc.ac.in/id/eprint/15499

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