Geomembrane is used as water-proof barriers. The macromolecular polymers used (as base material of composite) include LDPE (low-density polyethylene), HDPE (high-density polyethylene), and EVA (ethylene/vinyl acetate copolymer).
1. Supplied in different specifications of width and thickness
2. Resistant to environmental stress cracking
3. Resistant to chemical erosion
3. rammed earth+crushed stone+concrete foundation+ green crushed stone+ non-woven banket+ grass paver+mixed nutrient soil
4. Stable in a wide range of temperature and up to a long service life
5. Suited to applications requiring low permeability, such as landfills, tailing piles, channels, banks and dams, and subways
Geomembrane is used as barriers in earth dams to block water seepage, as the plastic membrane is not permeable. The plastic membrane has high tensile strength and high ductility and thus able to bear the water pressure and adjust to bank deformations that may happen. The non-woven cloth, a macromolecular short-fiber chemical material, also has high tensile strength and high ductility. The plastic membrane and non-woven fabric are bonded by needle-puncturing or heat-adhesion. The resulting composite of course has high tensile strength and is resistant to puncturing. Additionally, as the non-woven fabric has a rough surface the resulting composite has an advantageous high coefficient of friction at the interface, which contributes to stability of the composite geomembrane and protection layer. Geomembrane also has good performance in resisting erosion caused by bacterial activities and chemical actions (acid, alkali, salt, and so on) and has a long service life in unexposed applications.