Defined definition of geomembrane geomembrane: 13,954,897,667 called geomembrane is used in civil construction of a low permeability membrane shaped like a geotextile material. Geomembrane Category: geomembrane geomembrane generally divided into bitumen and polymer (synthetic polymers) geomembrane two categories. In order to adapt to a variety of civil engineering applications require different strength and deformation, and two were reinforced and unreinforced evolved (single or mixed material) combined type. 1, mainly for bituminous geomembrane composite nature (including woven or non-woven geotextile type) as infiltration asphalt binder. 2, depending on the main material of different polymers geomembrane into plastic geomembrane, flexible geomembrane and geomembrane combination (geomembrane) The main material of the plastic geomembrane categories are: polyvinyl chloride (PVC), durable PVC vinyl (PVC-OR), toughened polyvinyl chloride (PVC-E), chlorinated polyethylene (CPE), low density polyethylene (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), Toughening elastomeric polyolefin or a polyolefin (ELPO) The main material of the elastic rubber-like geomembrane class are: butyl rubber (IIR), propylene oxide rubber (ECO), chloroprene rubber (CR), nitrile rubber (NBR ), epichlorohydrin rubber.