Priced at direct tunnel waterproof board waterproof board, tunnel waterproof board, EVA waterproof board, PE waterproof board tunnel waterproof board, mainly used in the tunnel before the construction of two waterproof lining board collectively, which is based polymer as the basic raw material into an impermeable material, both to prevent fluid leakage, but also can prevent gas evaporation. As the state seepage tunnel construction, isolation, reinforcement, crack reinforcement project needs the product has been widely and important use. Tunnel waterproofing board Category: Thickness: 0.20-2.00mm; width: 1000-5000mm accordance with the material can be divided: LDPE waterproof board, HDPE waterproof board, EVA waterproof panels divided in accordance with geotextile composite mode: Point complex, composite strips, whole complex; according to the production process can be divided into: matte waterproof board, glossy waterproof board; tunnel waterproof board Features: 1. High product has strength, elongation properties better 2. deformation modulus, anti-corrosion, anti-aging 3. Anti good penetration properties, high barrier; high puncture resistance; 4. acid and a variety of chemicals, excellent elongation and wear resistance, no chemical pollution; 5. good dimensional stability, good adhesion, easy construction . Tunnel waterproofing board importance: the construction of the tunnel construction waterproof layer is very important, which acts as a tunnel waterproof board in an important role. Tunnel seepage water not only directly damage the lining and reduce the useful life of the tunnel; and accelerate corrosion railroad rails and fasteners, track bed and foundation damage, affecting line stability, even in cold regions due to leakage ice affect the safe operation of electric locomotives. Currently under construction, tunnel engineering generally use composite lining, which is set in a waterproof barrier layer between the sheath and Shotcrete concrete lining. Waterproof layer is impermeable smooth surface waterproofing, it not only plays the role of water, but also for the initial and secondary shotcrete lining molded concrete terms, but also play the role of isolation and lubrication, making the initial spray concrete support constraints on the secondary lining concrete stress reduction.