Gas permeability of partially hydrated geosynthetic clay liner under two stress conditions
Data(s) |
05/10/2016
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Identificador | |
Idioma(s) |
eng |
Publicador |
ICE Publishing |
Relação |
LP0989415 http://dro.deakin.edu.au/eserv/DU:30084968/gates-gaspermeability-inpress-2015.pdf http://www.dx.doi.org/10.1680/envgeo.14.00009 |
Direitos |
2015, ICE Publishing |
Tipo |
Journal Article |
Resumo |
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. |