CPE WATERPROOF MEMBRANE

CPE WATERPROOF MEMBRANE

Chlorinated polyethylene waterproofing membrane for high-speed railway on passenger dedicated lines is a new high-end waterproofing material specially developed for the characteristics of concrete bridge decks on high-speed passenger dedicated lines, which are self-extinguishing and have a residual flame of less than 5 seconds. The main material of this product is chlorinated polyethylene (CPE), a special high basic molecular synthetic material. Due to the saturation of the molecular structure of CPE
The introduction of hydrogen and chlorine atoms makes the main chain less prone to breakage under the effects of oxygen, ozone, sunlight, humidity, and heat. Therefore, chlorinated polyethylene has excellent aging resistance, oxygen resistance, and oil resistance, which endows waterproof membranes with high strength, high elongation, weather aging resistance, long service life, lightweight, and easy construction and maintenance.

Advantage

●High tensile strength and high elongation at break
●Excellent weather resistance, good aging resistance, and long service life
●Capable of withstanding large temperature changes in the environment, and can be used under temperature conditions of -40~+120 ℃ without being affected
●Realize cold operation construction, simple maintenance, and environmentally friendly

Application scope

Railway, concrete bridge, bridge deck, passenger co line, railway, bridge.

Construction points

●The base layer is flat, and the flatness is checked with a 1 m-long ruler. The gap is only allowed to change smoothly and should not exceed 5mm;
●The base layer of the bridge deck and the inner corner of the retaining wall from the root to the upper corner, as well as the base layer from the inner edge of the inner wall and the inner edge of the wall from the root to the upper mouth, are free of honeycomb, pitted surface, floating debris, floating soil, and oil stains.
●Waterproof membrane should be laid on the bridge deck to the base of the retaining wall and vertical wall and laid one by one in the uphill direction. The joints between the membrane ,the retaining wall and the vertical wall should be coated with a waterproof coating.
●When the span of the beam is greater than 16m, it is allowed for the waterproof membrane to be longitudinally overlapped at one point, first longitudinally overlapped, and then horizontally overlapped along the longitudinal centerline of the bridge deck. Cement slurry binder is used for the roll material and base layer, and 42.5R ordinary Portland cement, special adhesive powder, and water are used as the cement slurry binder for mixing. The ratio is 100kg cement, 60kg water, 120g special adhesive powder, and 800g reinforcing agent.