Geomembrane is a continuous membrane type barrier/liner composed of materials of low permeability to control fluid migration. The raw materials of geomembranes may be a polymeric or as-phaltic or a combination thereof. The barrier applies when the geomembrane is used inside a soil mass and the liner is generally reserved for the cases where the geomembrane is used as an interface or a sur-face revetment. Also, geomembranes are made from various thermoplastic resins and are manufactured and distributed throughout the world, making all types of products readily available. In here, it is intro-duced that the overall concepts of geomembranes e.g., raw materials and manufacturing process, welding, performance and regulation etc. to applied to the lining and capping system of waste landfills.
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