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Category Economy cars
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Created 2020-03-30
Owner sbmcrusher
Title The construction method of composite geomembrane in winter
Description A composite geomembrane is made by attaching a geotextile on one or each side of the film. Its form is one cloth, one film, two cloths, one film, two films, one cloth, and so on. The geotextile acts because the protective layer of the high quality HDPE geomembrane, protecting the impervious layer from damage. so as to scale back ultraviolet and increase anti-aging performance, it's best to use the buried method. During construction, firstly use sand or clay with a smaller material diameter to level the bottom surface, then lay a geomembrane. The geomembrane shouldn't be stretched too tightly, and therefore the ends embedded within the soil body are corrugated. Finally, a layer of about 10 cm is overlaid with fine sand or clay on the geomembrane. Lay 20-30cm stone (or concrete prefabricated block) as a shock protection layer. During the development, every effort should be made to stop stones from directly hitting the geomembrane. The connection between the composite geomembrane and therefore the surrounding structure should be anchored by expansion bolts and plate strips, and therefore the joint should be painted with emulsified asphalt (2mm thick) to stop leakage. The joint treatment of composite HDPE geomembrane factory price may be a key process, which directly affects the anti-seepage effect. the overall joint methods are ① overlap: the overlap width should be greater than 15cm; ② heat welding: suitable for slightly thicker geomembrane substrate, the overlap width of the weld isn't but 5CM. (Easy to open glue, poor anti-seepage effect.) According to a few years of practice, the thickness of the geomembrane isn't but 0.25mm. Too thin may cause pores, and it's easy to be damaged during construction and reduce the anti-seepage effect. within the construction of geomembrane, special attention should be paid to make sure that the laying isn't too tight, no wrinkling, and therefore the splicing must be firm. Construction must be administered in strict accordance with technical specifications, and five quality barriers, like preparation, laying, splicing, inspection and backfilling, must be prepared. thanks to the great anti-seepage effect of the composite geomembrane.
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