The difference between HDPE geomembrane and ordinary anti-seepage membrane
RELEASE TIME :
2021-07-18 12:38
The utilization rate of geomembrane in the market is very high. The performance of geomembrane is very high, and it has very good crack resistance and corrosion resistance. The service life of geomembrane is also very long, and it has a very wide range of applications. Because of the excellent performance of geomembrane, many customers want to use geomembrane.
The difference between hdpe geomembrane and general anti-seepage membrane.
Nowadays, anti-seepage of roadbed in many factory workshops is also common, and geomembrane is used as anti-seepage layer. According to the design plan, the anti-seepage geomembrane usually chooses the national standard soil film, which is more than 1 mm, which is thin and standardized enough to meet the anti-seepage regulations.
The general anti-seepage membrane is recommended to choose the geomembrane on the urban construction standard, and the uneven roadbed should also cooperate with the anti-seepage geotextile to implement the anti-seepage solution, and it can also be made into a polyester silk composite geomembrane.
It is generally believed that the independent general anti-seepage membrane is not the actual effect of anti-seepage. The key evaluation criterion is water permeability. Generally, the index of the anti-seepage membrane is higher than that of ordinary lime-soil compaction piles. It's about 0.01-0.001 in appearance. However, the combination of impermeable membrane and vulcanized rubber, bituminous glue will produce a compound of waterproof layer.
HDPE geomembranes are usually used in dams of water conservancy projects, because of the collapse of the dam, so the two ends of the earth-rock dam are destroyed. In order to deal with the upstream anti-seepage problem. According to the safety analysis of the dam of Zhoutou Water Conservancy Project, in order to deal with the many water leakages caused by the landslide of the dam and the water leakage of the foundation of the dam, bedrock grouting, surface grouting, and scouring and backfilling are adopted in the vertical anti-seepage level soil process. Filling process and anti-seepage materials such as high-sprayed anti-seepage walls.
HDPE geomembrane is a soil test anti-seepage material made of plastic film as an anti-seepage board and compounded with non-anti-cloth. The key to its anti-seepage performance is the anti-seepage performance of the plastic film. At this stage, the key plastic films used nationwide and overseas for anti-seepage are () and high-pressure polyethylene (PE). They are polymers made of macromolecular chemically soft materials with small proportions, are highly malleable, and have a high degree of integration and deformation capabilities. Corrosion resistance, good cold resistance. The key principle is to use the non-absorbent plastic film to cut off the water seepage channel of the dam body, and to bear the pressure and adapt to the deformation of the dam foundation with its very large compressive strength and tensile strength; and the non-proof cloth is also a polymer material polyester short The fiber chemical material, formed by needling or thermal bonding, has very high strength and elasticity. After it is combined with the film, it not only increases the strength and puncture resistance of the film, but also because there is no fabric The surface layer is not smooth, which increases the friction resistance of the surface, which is beneficial to the stability of the composite HDPE geomembrane and the protective layer.
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