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Waterproof board

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  • PRODUCT DETAILS
  • Product introduction:
    Waterproof board is also called geomembrane. It is customary to call geomembrane with a thickness of ≥ 0.8mm waterproof board and geomembrane with a thickness of <0.8mm. It is an impermeable material made of high molecular polymer as the basic raw material and is divided into homogeneous waterproof board and composite waterproof board.
    The main function of the waterproof board is to prevent the leakage of liquid and the volatilization of gas. The role of the waterproof board in rock engineering is mainly seepage prevention and isolation, but it also plays a role in strengthening and protection. It is mainly used in: earth-rock dam, rockfill dam, masonry dam, concrete dam, tailings dam, sewage dam, channel, liquid storage tank and other projects of seepage control, subway, basement and tunnel seepage control lining, highway and railway foundation seepage control, sanitary landfill with filament geotextile, bentonite waterproof blanket and other geotechnical materials used and so on.
    Waterproof board HDPE waterproof board (new HDPE waterproof board) used for underground anti-corrosion and anti-seepage engineering is made by three-layer co-extrusion technology with the most advanced automatic geotechnical production equipment in the world through formula reorganization, selection of high-quality low-pressure high-density polyethylene raw materials, scientific ratio of carbon black, anti-aging agent, antioxidant, ultraviolet absorber, stabilizer and other auxiliary materials. This production line is highly automated, from order input, formulation, feeding, processing to quality monitoring, are fully automatic control by computer, and strictly based on scientific data to operate. And can use the latest raw materials at the same time (with super tensile strength), such as Metallocence and traditional PE, EVA, LLDPE, etc. All products are in accordance with the United States ASTM D standard implementation of production, meet or exceed national standards, product specifications are complete, thickness of 0.2 mm-2.5mm, width of 1m-8m, to meet the artificial lake seepage control, sewage tank seepage control, reservoir seepage control, environmental protection, mining and chemical projects such as seepage control and corrosion requirements.
    Product use
    The waterproof board has a width of 4-6m and a weight of 200-1500g/m2. It has high physical and mechanical properties such as tensile strength, tear resistance and bursting. The product has the characteristics of high strength, good elongation performance, large deformation modulus, acid and alkali resistance, corrosion resistance, aging resistance and good anti-seepage performance. It can meet the needs of civil engineering such as seepage prevention, isolation, reinforcement, crack prevention and reinforcement in water conservancy, municipal administration, construction, transportation, subway, tunnel and engineering construction. Because of its selection of polymer materials and the production process to add anti-aging agent, it can be used in unconventional temperature environment, this waterproof board is often used in dams, drainage ditches seepage control treatment, as well as waste yard anti-fouling treatment.
    development trend
    Now it has reached the peak season for waterproof board production, which is also the best time to consolidate the waterproof board. Due to the change of weather, it has a certain beneficial effect on the construction of waterproof board. The emergence of this phenomenon has caused some increase and elevation in the price of waterproof board. Although the price of waterproof board has increased, HDPE particles, the raw material of waterproof board, will also increase correspondingly, but the particles of waterproof board must also be of pure quality and color, in order to ensure the production of the best waterproof board. Therefore, the surrounding boundary must be dug to cut off the water tank, and the waterproof board must be buried in the tank. The quality inspection of the waterproof board will be carried out according to different progress in the construction environment. This will equally reduce the ex-factory price of the waterproof board and the real growth trend of the price of the waterproof board, which is conducive to users using the most assured and valuable waterproof board.
    Product characteristics
    Strength-under the same weight specification, the tensile strength of each direction is higher than that of other needle-punched non-woven fabrics.
    Anti-ultraviolet light-has a high anti-ultraviolet ability.
    Extremely high temperature resistance-high temperature resistance up to 230 ℃, high temperature still maintain structural integrity and the original physical properties.
    Permeability and plane drainage-waterproof board is thick and needle forming, with good plane drainage and vertical permeability, after many years can still maintain this performance.
    Creep resistance-waterproof board creep resistance is better than other geotextile, so the long-term effect is good. It can resist the erosion of common chemicals in the soil and the corrosion of gasoline, diesel and so on.
    Ductility-waterproof board under a certain stress has a good elongation, so that it can adapt to uneven irregular base surface.
    Product Features
    1. Excellent flexibility, impermeability, elongation and wear resistance;
    2, with good isolation, puncture resistance;
    No chemical pollution;
    4, acid and alkali and a variety of chemical substances, good dimensional stability, good adhesion, easy construction.
      

    Construction process

    1. Preparation before laying:

    1.1 foundation treatment: the foundation shall be flat,

    contact surface between 1.2 and membrane,

    2. Laying method:

    2.1 along a certain direction of laying, at the same time do not pull too tight, should have a certain amount of expansion, in order to adapt to the deformation of the matrix.

    When laying 2.2 waterproof board, adjust the direction of each unit to facilitate the welding of the two units.

    After the 2.3 waterproof board is laid, it should be pressed with a sand bag to prevent wind and sand from affecting the next edge welding.

    3. Waterproof board weldingSeam treatment is the key procedure of construction. Generally, thermal welding method is adopted. The surface of PE film is heated to melt the surface, and then the surface is fused into one by pressure.

    3.1 for the laying of good waterproof board, the edge of the joint requirements can not have oil, water, dust and so on.

    3.2 Before welding, adjust the PE single film on the two sides of the joint to make it overlap a certain width. The overlap width is generally 6~8 ㎝ and flat without wrinkles.

    The 3.3 is welded using a special welding machine.

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