What is the purpose of the waterproof plate
RELEASE TIME :
2022-10-08 16:06
The basic function of the waterproof board is to control the leakage of gas and gas evaporation. The importance of the waterproof board in the rock engineering is mostly seepage prevention and protection, but at the same time, it also has the effect of promotion and protection. It is key used in: gravity dam, rockfill dam, masonry dam, concrete dam, tailings dam, waste water storage dam, way, liquid storage tank and other engineering project seepage prevention, subway station, underground and tunnel construction seepage prevention lining, road and railway roadbed seepage prevention, clean waste disposal field with non-woven geotextiles, bentonite waterproof blanket and other geosynthetic materials application.
Main uses:
Waterproof plate large surface 4-6m, net weight of 200-1500g/square meter, high compressive strength, wear resistance, top breaking and other physical and mechanical performance parameters, the commodity has the advantages of large strength, widening characteristics, large deformation modulus, corrosion resistance, corrosion resistance, anti-aging, anti-seepage high cost performance. Can meet the water conservancy engineering, municipal engineering, engineering construction, traffic travel, subway station, tunnel construction, construction engineering in the seepage prevention, protection, reinforcement, anti-crack structure reinforcement, etc. Because it is made of fiber material and the production process adds anti-aging wetting agent, it can be applied from the nature of non-traditional environment temperature. This kind of waterproof board is mainly used for the seepage prevention solution of river dikes and drainage channels, and the anti-pollution solution of waste yard.
Construction process
1. Preparatory work before laying:
1. Foundation foundation: clean up the laying surface, stipulating that the substrate is levelling, the sand is solid, can not be convex and concave uneven, cracks, can not appear sharp, stone, fine wire, sticks, etc., within the range of seepage control lawn, tree rod to eliminate, spraying herbicide for weeds.
2. In the contact area with the film, lay a small size of gravel soil or clay layer as a protective layer, the protective layer covering thickness is not suitable for less than 30 CMS.
2. Laying method:
1. Lay along a certain azimuth, and at the same time do not have to pull too tight, should set aside a certain amount of expansion, to meet the base material deformation.
2. When the waterproof plate is laid, adjust the step of each module, so as to facilitate the welding of 2 units.
3. After the waterproof board is laid, it should be pressed with sandbags to prevent sand damage to the next step of edge welding.
3. Welding of waterproof plate:
1. Joint solution is an important process of engineering construction, generally using hot welding,PE film connected to the surface of the heating solution, so that the surface melting, and then through the working pressure, so that its melting into one.
2. For the waterproof plate laid better, the border interface shall not appear oil stains, water, dust and so on.
3. Before welding, adjust the two edges of PE single film at the interface so that the total width of the bar lap is certain. The total width of the bar lap is generally 6 ~ 8㎝ and it is flat without wrinkles.
4. Use special type welding machine for welding.
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