Welcome to Jinan Composite Geomembrane Company

Composite geomembrane is an impermeable material made of geotextiles and geomembranes, primarily used for seepage prevention. Composite geomembranes are classified into one-layer fabric and one-layer membrane, or two-layer fabric and one-layer membrane, with widths ranging from 4 to 6 meters and weights from 200 to 1500 g/m². They exhibit high physical and mechanical properties such as tensile strength, tear resistance, and puncture resistance, meeting the needs of civil engineering applications in water conservancy, municipal projects, construction, transportation, subways, and tunnels. Due to the selection of polymer materials and the addition of anti-aging agents during production, they can also be used in unconventional temperature environments.

Performance

Composite geomembrane (also known as composite impermeable membrane) is available in one-layer fabric and one-layer membrane or two-layer fabric and one-layer membrane configurations. They have a width of 4 to 6 meters and a weight ranging from 200 to 1500 g/m². These products are characterized by high strength, good elongation, high deformation modulus, acid and alkali resistance, corrosion resistance, aging resistance, and excellent impermeability. They can meet the demands of seepage prevention, isolation, reinforcement, crack prevention, and stabilization in civil engineering projects such as water conservancy, municipal works, construction, transportation, subways, tunnels, and other engineering projects. They are commonly used for seepage treatment of dams and drainage ditches, as well as pollution prevention in waste disposal sites.

Welcome to Lu'an Composite Geomembrane Company

Construction

Composite geomembrane is formed by using far-infrared heating in an oven to heat one or both sides of the geomembrane and pressing geotextile and geomembrane together with guide rollers. With advancements in production technology, there is also a casting method for making composite geomembranes. Its configurations include one-layer fabric and one-layer membrane, two-layer fabric and one-layer membrane, or one-layer fabric and two-layer membranes.

Geotextiles act as a protective layer for the geomembrane to prevent damage to the impermeable layer. To minimize ultraviolet exposure and enhance durability, the buried installation method is adopted.

During construction, a base layer is first leveled with fine sand or clay. Then, the geomembrane is laid down. The geomembrane should not be stretched too tightly, and the buried portions at both ends should have a wavy appearance. A transition layer of approximately 10 cm thick fine sand or clay should be laid over the geomembrane, followed by a 20-30 cm layer of stones or prefabricated concrete blocks as an anti-scour protective layer. During construction, efforts should be made to avoid direct impacts of stones on the geomembrane. Protection and the geomembrane laying should be carried out simultaneously. The connection of the composite geomembrane with surrounding structures should be anchored with expansion bolts and steel plates, with the connection areas coated with emulsified asphalt (2 mm thick) for adhesion to prevent seepage at these locations.