Composite geo-membrane was invented in China, applied in the The South-to-north Water Diversion Project with good anti-seepage effect. While there are no composite geo-membrane in foreign countries. It has also been widely used in subway?tunnel and other underground constructions. Of course, it can be used in underground garage , but you must choose the appropriate specifications. It is recommended to use 300g/1.0mm/300g composite geo-membrane. The following are the details. Composite geo membrane is geotechnical impermeable material made of plastic film as anti-seepage material and non-woven fabrics. Its waterproof performance mainly depends on the performance of plastic film. Impermeable plastic film at home and abroad are mainly polyvinyl chloride (PVC) and polyethylene (PE), which are Polymer chemistry flexible material with smaller proportion, good extensibility and high?adaptability?to the?deformation. Corrosion resistance, low temperature resistance, good anti-frost?property. The main mechanism is to block earth dam leakage passage by imperviousness of plastic film and bear hydraulic?pressure and adapt to deformation of dam with greater tensile strength and elongation. Non-woven geotextile is also a kind of macromolecule staple fibre chemical material shaped through acupuncturing or hot sticking, having high tensile strength and extensibility. Combined with plastic film, it can not only increases the tensile strength and anti-puncture ability of plastic film, but also increase the friction coefficient of contact surface and make the composite geo-membrane and packaging layer stable as the non-woven fabrics surface becomes rough. At the same time, they have good corrosion resistance to bacteria and chemical action, not afraid of acid, alkali, salt erosion, high seepage coefficient.
