University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Gas flow unified measurement system for sequential measurement of gas diffusion and gas permeability of partially hydrated geosynthetic clay liners

Rouf, A, Bouazza, A, Singh, RM, Gates, WP and Rowe, RK (2016) Gas flow unified measurement system for sequential measurement of gas diffusion and gas permeability of partially hydrated geosynthetic clay liners Canadian Geotechnical Journal, 53 (6). pp. 1000-1012.

[img] Text
Gas flow unified measurement system for sequential measurement of gas diffusion and gas permeability of partially hydrated geosynthetic clay liners.pdf - Version of Record
Restricted to Repository staff only
Available under License : See the attached licence file.

Download (1MB)
[img]
Preview
Text (licence)
SRI_deposit_agreement.pdf
Available under License : See the attached licence file.

Download (33kB) | Preview

Abstract

A gas flow unified measurement system (UMS-G) for sequential measurement of gas diffusion and gas permeability of geosynthetic clay liners (GCLs) under applied stress conditions (2 to 20 kPa) is described. Measurements made with the UMS-G are compared with measurements made with conventional experimental devices and are found to give similar results. The UMS-G removes the need to rely on two separate systems and increases further the reliability of the gas properties’ measurements. This study also shows that the gas diffusion and gas permeability reduce greatly with the increase of both gravimetric water content and apparent degree of saturation. The effect of applied stress on gas diffusion and gas permeability is found to be more pronounced at gravimetric water content greater than 60%. These findings suggest that at a nominal overburden stress of 20 kPa, the GCL used in the present investigation needs to be hydrated to 134% gravimetric water content (65% apparent degree of saturation) before gas diffusion and gas permeability drop to 5.5 × 10−11 m2·s−1 and 8.0 × 10−13 m·s−1, respectively, and to an even higher gravimetric water content (apparent degrees of saturation) at lower stress.

Item Type: Article
Subjects : Civil Engineering
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
AuthorsEmailORCID
Rouf, AUNSPECIFIEDUNSPECIFIED
Bouazza, AUNSPECIFIEDUNSPECIFIED
Singh, RMUNSPECIFIEDUNSPECIFIED
Gates, WPUNSPECIFIEDUNSPECIFIED
Rowe, RKUNSPECIFIEDUNSPECIFIED
Date : June 2016
Identification Number : 10.1139/cgj-2015-0123
Copyright Disclaimer : Copyright © 2016, NRC Research Press or its licensors
Uncontrolled Keywords : Geosynthetic clay liner, Gas flow, Diffusion, Advection, Gravimetric water content
Depositing User : Symplectic Elements
Date Deposited : 29 Jul 2016 09:12
Last Modified : 29 Jul 2016 09:12
URI: http://epubs.surrey.ac.uk/id/eprint/811557

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800