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Geosynthetic clay liners (GCLs) are factory manufactured hydraulic barriers consisting of a layer of bentonite or other very low-permeability material supported by geotextiles and/or geomembranes, mechanically held together by needling, stitching, or chemical adhesives. Due to environmental laws, any seepage from landfills must be collected and properly disposed of, otherwise contamination of the surrounding ground water could cause major environmental and/or ecological problems. The lower the hydraulic conductivity the more effective the GCL will be at retaining seepage inside of the landfill. Bentonite composed predominantly (>70%) of montmorillonite or other expansive clays, are preferred and most commonly used in GCLs. A general GCL construction would consist of two layers of geosynthe

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  • Géosynthétique bentonitique (fr)
  • Geosynthetic clay liner (en)
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  • Les géosynthétiques bentonitiques sont des géosynthétiques assurant une fonction d'étanchéité. Comme les géomembranes, ils sont utilisés pour remédier aux pertes d'eau par infiltration, ou pour éviter la migration de polluants dans le sol.Ils peuvent être utilisés en combinaison avec une géomembrane. On parle alors d’étanchéité combinée ou composite. (fr)
  • Geosynthetic clay liners (GCLs) are factory manufactured hydraulic barriers consisting of a layer of bentonite or other very low-permeability material supported by geotextiles and/or geomembranes, mechanically held together by needling, stitching, or chemical adhesives. Due to environmental laws, any seepage from landfills must be collected and properly disposed of, otherwise contamination of the surrounding ground water could cause major environmental and/or ecological problems. The lower the hydraulic conductivity the more effective the GCL will be at retaining seepage inside of the landfill. Bentonite composed predominantly (>70%) of montmorillonite or other expansive clays, are preferred and most commonly used in GCLs. A general GCL construction would consist of two layers of geosynthe (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/GCLS1.jpg
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  • December 2017 (en)
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  • Geosynthetic clay liners (GCLs) are factory manufactured hydraulic barriers consisting of a layer of bentonite or other very low-permeability material supported by geotextiles and/or geomembranes, mechanically held together by needling, stitching, or chemical adhesives. Due to environmental laws, any seepage from landfills must be collected and properly disposed of, otherwise contamination of the surrounding ground water could cause major environmental and/or ecological problems. The lower the hydraulic conductivity the more effective the GCL will be at retaining seepage inside of the landfill. Bentonite composed predominantly (>70%) of montmorillonite or other expansive clays, are preferred and most commonly used in GCLs. A general GCL construction would consist of two layers of geosynthetics stitched together enclosing a layer of natural or processed sodium bentonite. Typically, woven and/or non-woven textile geosynthetics are used, however polyethylene or geomembrane layers or geogrid geotextiles materials have also been incorporated into the design or in place of a textile layer to increase strength. GCLs are produced by several large companies in North America, Europe, and Asia. The United States Environmental Protection Agency currently regulates landfill construction and design in the US through several legislations. (en)
  • Les géosynthétiques bentonitiques sont des géosynthétiques assurant une fonction d'étanchéité. Comme les géomembranes, ils sont utilisés pour remédier aux pertes d'eau par infiltration, ou pour éviter la migration de polluants dans le sol.Ils peuvent être utilisés en combinaison avec une géomembrane. On parle alors d’étanchéité combinée ou composite. (fr)
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