Author : Sreevidhya V 1
Date of Publication :16th May 2019
Abstract: A Geosynthetic Clay Liners (GCL) is a woven fabric-like material, primarily used for the lining of landfills. It is a kind of geomembrane and geosynthetic, which incorporates a bentonite or other clay that has a very low air permeability as well as low hydraulic conductivity. In this paper, a review of the main findings is presented with the focus on the critical aspects affecting the gas permeability of GCLs. Air permeability is the volume of air passing through a medium. A porous medium such as sand or like allows the air or some other gases to pass through it. The air permeability should be reduced inorder to avoid the groundwater pollution. Air permeability of a GCL gets affected by the type of bentonite used in it, the moisture content and the pressure applied on it. As the moisture content increases, the air permeability seems to get decreased. GCL type is also a main factor which affects the air permeability
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