The composite geomembrane is a composite geomembrane that is pasted with geotextile on one or both sides of the film. Its form includes one cloth and one film, two cloths and one film, two films and one cloth, etc.
The geotextile is used as the protective layer of the
environmental geomembrane manufacturers to protect the anti-seepage layer from damage. In order to reduce ultraviolet radiation and increase anti-aging performance, it is best to use the buried method for laying.
During construction, first use sand or clay with a smaller material diameter to level the base surface, and then lay the geomembrane. The geomembrane should not be stretched too tightly, and the part buried in the soil at both ends is corrugated, and finally a layer of about 10cm is laid on the geomembrane with fine sand or clay. Lay 20-30cm blocks of stone (or concrete prefabricated blocks) as a protective layer against erosion. During construction, try to avoid stones directly hitting the geomembrane. It is best to construct the protective layer while laying the membrane. The connection between the composite
LDPE geomembrane manufacturers and the surrounding structures should be anchored by expansion bolts and steel plate battens, and the connection part should be coated with emulsified asphalt (2mm thick) to prevent leakage.
The joint treatment of composite geomembrane is a key process, which directly affects the anti-seepage effect. The general joint methods are: ①Lap joint: the width of the lap should be greater than 15cm; ②Heat welding: suitable for a slightly thicker geomembrane base material, and the lap width of the weld is not less than 5CM. (Gluing is not recommended, soaking in water for a long time Easy to open glue, poor anti-seepage effect.)
According to many years of practice, the thickness of the
low cost textured geomembrane is not less than 0.25mm. If it is too thin, it may produce pores, and it is easy to be damaged during construction and reduce the anti-seepage effect. In the construction of geomembrane, special attention should be paid to ensure that the laying should not be too tight, not wrinkled, and the splicing must be firm. The construction should be strictly in accordance with the technical specifications, and the five quality barriers of preparation, laying, splicing, inspection and backfilling should be well maintained. Due to the good anti-seepage effect of the composite geomembrane.
Tue, 03 May 2022 06:48:26 +0800
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