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Gas permeability of partially hydrated geosynthetic clay liner under two stress conditions

Rouf, MA, Singh, RM, Bouazza, A, Rowe, RK and Gates, WP (2015) Gas permeability of partially hydrated geosynthetic clay liner under two stress conditions Environmental Geotechnics.

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Abstract

The results of a series of gas permeability tests, with monitoring of gravimetric/volumetric moisture content and total suction, on a commercially available needle-punched geosynthetic clay liner (GCL) are presented. GCL specimens were partially hydrated with deionised water under 2 and 20 kPa confinement prior to testing. The tests were conducted at differential pressures ranging from 1 to 10 kPa. Gas permeability was found to decrease with an increase in gravimetric/volumetric moisture content and a decrease of suction. The effect of the preconditioning stress was found to be more pronounced at gravimetric moisture contents greater than 40% (25% apparent degree of saturation, 0·30 m3/m3 volumetric moisture content), and suctions less than 1·6 MPa.

Item Type: Article
Subjects : Civil Engineering
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
AuthorsEmailORCID
Rouf, MAUNSPECIFIEDUNSPECIFIED
Singh, RMUNSPECIFIEDUNSPECIFIED
Bouazza, AUNSPECIFIEDUNSPECIFIED
Rowe, RKUNSPECIFIEDUNSPECIFIED
Gates, WPUNSPECIFIEDUNSPECIFIED
Date : 11 September 2015
Identification Number : 10.1680/envgeo.14.00009
Copyright Disclaimer : © ICE Publishing 2015, all rights reserved
Uncontrolled Keywords : Contaminant transport, Gas migration, Landfill
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 01 Aug 2016 09:31
Last Modified : 22 Aug 2016 13:47
URI: http://epubs.surrey.ac.uk/id/eprint/811571

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