The Cheap HDPE Woven Geotextile Used In The Fish Farm Or Man-made Lake

1.Performance characteristics of HDPE anti - seepage geotechnical film

(1). Chemical stability -- HDPE impermeable membrane has excellent chemical stability and is widely used in sewage treatment, chemical reaction pool and landfill. High and low temperature, asphalt, oil and tar, acid, alkali, salt and more than 80 strong acid strong alkaline chemical medium corrosion.

(2), aging resistance, HDPE antiseepage membrane has good anti-aging, anti-uv, decomposition resistance, can be used bare, material service life of up to 50-70, seepage control provide a good material guarantee for the environment

(3). Anti-plant root - HDPE impermeable membrane has excellent anti-puncture ability, which can resist most plant roots.

(4). High mechanical strength -- HDPE impermeable membrane has good mechanical strength, fracture tensile strength 28MP, and fracture elongation is 700%.

(5), low cost, high efficiency, using new technology to improve the effect of the anti-seepage in HDPE antiseepage membrane, but the production process more scientific and speed rapid, so the product cost less than traditional waterproof material instead, by actual measurement of HDPE antiseepage membrane used to general engineering to save costs by about 50%

(6), fast construction speed, HDPE antiseepage membrane has high flexibility, has a variety of specifications variety of laying form meets the demand of different engineering seepage control, USES the hot melt welding, weld strength is high, construction is convenient, rapid and sound

(7), environmental non-toxic, HDPE antiseepage membrane materials are avirulent environmental protection material, principle of seepage prevention is a common physical change, do not produce any harmful substances, is the best choice of environmental protection, cultivation, the drinking pool

(8) The welding effect is good - the HDPE impermeable membrane USES the special welding machine welding effect is very good, the strength of the weld is greater than the strength of the mother material, and is convenient for construction.

2.National standard parameters are shown in table GB/T(17643-1998)

1 tensile strength Mpa is greater than 17 or greater than 25.

2 breaking elongation % is greater than 450 or equal to 550.

3 right Angle tear strength N/mm is greater than 80 or greater than 110.

4 carbon black content % is greater than or equal to 2.

5. Environmental stress cracking F20h is greater than 1500.

The induction time of oxidation was greater than 20.

The water vapor permeability coefficient g (cm) /(cm) is less than or equal to 1.0 x 10-12, which is less than or equal to 1.0 x 10-16.

8-70 ℃ low temperature embrittlement performance impact

9 dimensional stability % plus or minus 3.

3.The laying of impermeable geomembrane

 1. The corresponding qualified acceptance certificate of civil engineering shall be submitted before laying the anti-seepage work film.

2. Before cutting, the relevant size should be measured accurately. Then, according to the actual cutting, it is generally not suitable to cut according to the size of the picture, and the serial number should be numbered, and the detailed record should be recorded on the special form.

3. When laying the HDPE geotechnical film, try to minimize the welding seam, and save the raw materials as far as possible under the premise of guaranteeing the quality. It is also easy to guarantee quality.

4. The lap width of the joint between the film and the membrane is generally not less than 10cm, which is usually parallel to the maximum slope, that is, along the slope direction.

5. Usually in corners and deformed sections, the length of joints should be minimized. In addition to special requirements, no welds shall be provided on slopes with a slope greater than 1:6 or within 1.5 m of the stress concentration area.

6. In the laying of the anti-seepage geomemium, it should be avoided to create artificial fold, and when the temperature is low, it should be stretched as tight as possible.

7. After the completion of the impervious geomembrane laid, should decrease as far as possible to walk on the surface of the membrane, move tool, etc., all can cause harm to HDPE membrane, all should not be on the membrane or walking to carry on the membrane, so as not to cause accidental damage to the film.

4.Construction method of anti-seepage geomembrane.

Do not drag, drag, and avoid sharp object puncture during transportation.

1. Extend from the bottom to the high position. Do not pull too tightly, leaving a margin of 1.50%, in case of partial subsidence stretching. Considering the actual situation of this project, the slope is laid in order from top to bottom;

2. The longitudinal joints of two adjacent pieces should not be on a horizontal line, and should be staggered more than 1m;

3. The longitudinal joints shall be more than 1.50m from the foot of the dam and the bending feet, and shall be located on the plane;

4. The bottom of the slope;

5. When the slope is laid, the film direction should be basically parallel to the maximum slope line.

5.Common specification for HDPE impermeable membrane

6.The packing standard of HDPE impermeable membrane

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