Anti Seepage PVC Waterproofing Membrane For Water Conservancy Or Special Engineering Projects

Polyvinyl chloride (PVC) waterproof membrane for water conservancy or special engineering projects

Product Features

The PVC waterproofing membrane for water conservancy/special is a thickened special waterproof material customized for extreme environments with high corrosion and high water pressure. Made of corrosion-resistant polyvinyl chloride resin as raw, it is added with a large amount of special additives resistant to acid, alkali and chemical corrosion, paired with a-layer polyester fiber reinforced structure. Its conventional thickness ranges from 2.0mm to 2.5mm, and the maximum thick version can be customized to 3.0mm. Tensile strength ≥15MPa, elongation at break ≥300%. After being soaked 10% concentration acid-alkali salt solution for 30 days the strength retention rate can still reach over 90%, with no swelling, decomposition orittleness. The maximum impermeability pressure reaches 2.0MPa, and it can resist long-term high-pressure water penetration of200m water head. Its low-temperature bending resistance can reach -30℃ without cracks, adapting to the winter low-temperature environment of open-air conservancy projects in cold northern regions. The puncture resistance of the membrane is far superior to that of ordinary PVC. Even when backfilled with gravel soil directly above during installation, it is not easily punctured sharp hard objects. Its service life can reach over 30 years in normal open-air water conservancy environments, and over 40 years in underground corrosion environments.

performance metric

Purpose and function

This type of geomembrane is widely applied in special engineering scenarios with high corrosion and high water pressure, such as anti-seepage layers of reservoir dams, artificial lake anti-seepage, wastewater treatment plant, landfill anti-seepage, chemical reaction tanks, tailing dam anti-seage, seawater breeding ponds, etc. It can be used not only for full-section-seepage and waterproofing of newly built water conservancy projects, but also for anti-seepage reinforcement and transformation of old leaking reservoirs. It solves pain points of traditional HDPE anti-seepage membrane which is easily pierced by sharp objects on complex substrates and has high difficulty in lap seam welding. At same time, it has more excellent chemical corrosion resistance than ordinary PVC geomembrane, and can resist the erosion of strong corrosive media as industrial wastewater, leachate, and seawater for a long time without the problem of corrosion and leakage. hot air welded seam strength of the geomembrane is much higher than that of the base material, forming a completely overall anti-seepage system and completely eliminating the risk of large-scale leakage after local damage of the anti-seepage layer in special engineering. It is the mainstream choice material for special anti-seepage projects in environmental protection and waterancy fields at home and abroad.