Characteristics of geotextile
- Low temperature resistance. Its melting point should not be lower than 170 ° C and reach above 200 ° C to avoid low-temperature expansion and deformation during asphalt paving to ensure the fluctuation of bentonite geosynthetic clay liner for sale own function.
- High tensile strength. The ultimate tensile strength should be greater than or equal to 8KN / m2, and the elongation at break should not be less than 50%.
- The average is good. Geotextile is anisotropic data. In order to ensure the average strength, the strength ratio of the nonwoven geotextile in both directions is not greater than 1.2.
- Strong adsorption and permeability. Geotextile needs an average appearance, which can be absorbed, saturated and saturated on average so that it can adhere well to the road surface.
The high quality bentonite geosynthetic clay liner is used as a maintenance layer of the geomembrane to prevent the impervious layer from being damaged. In order to increase the ultraviolet radiation and increase the anti-aging function, the embedding method is adopted.
In construction, the sand surface or clay with a smaller diameter should be used to level the base surface first, and then the geomembrane should be laid. The geomembrane should not be pulled too tight. Both ends are buried in soil and corrugated. First, place a layer of fine sand or clay of about 10 cm on the paved geomembrane. 20-30cm stone (or concrete prefabricated block) is used for earthquake-proof maintenance. During construction, efforts should be made to prevent stones from indirectly on the geomembrane. Stop the maintenance layer when laying the membrane. The joint geomembrane and surrounding structure should be fixed with shrink bolts and steel bands. Use emulsified asphalt (thickness 2mm) to prevent leakage at this location.