Geomembrane

Geomembrane is a geotechnical anti-seepage material composed of plastic film as the anti-seepage base material and non-woven fabric.
The anti-seepage performance of geomembrane mainly depends on the anti-seepage performance of plastic film. The plastic films used for anti-seepage at home and abroad mainly include: polyvinyl chloride (PVC), polyethylene (PE), EVA (ethylene/vinyl acetate copolymer), tunnel applications and ECB (ethylene vinyl acetate modified asphalt) Hybrid geomembrane), it is a polymer chemical, flexible material, small specific gravity, strong extensibility, strong deformation adaptability, corrosion resistance, low temperature resistance, and frost resistance.

Geomembrane Parameters

Geomembrane Performance

NO. Project Standard
1. Thickness   (mm) 0.75, 1, 1.25, 1.5, 2, 2.5, 3
2. Density      (g/cm3) ≥0.940
3. Longitudinal and transverse tensile yield strength (N/mm) ≥11, ≥15, ≥18, ≥22, ≥29, ≥37, ≥44
4. Longitudinal and transverse tensile fracture strength (N/mm) ≥20, ≥27, ≥33, ≥40, ≥53, ≥67, ≥80
5. Longitudinal and transverse yield elongation    (%) ≥12
6. Longitudinal and transverse elongation at break   (%) ≥700
7. Vertical and transverse right Angle tearing load     (N) ≥93, ≥125, ≥160, ≥190, ≥250, ≥315, ≥375
8. Puncture resistance (N) ≥240, ≥320, ≥400, ≥480, ≥640, ≥800, ≥960
9. Tensile load stress cracking(H)

Notched permanent load tension method

≥300
10. Carbon black content (%) 2.0~3.0
11. Induction time of atmospheric oxidation         (OIT)min Atmospheric pressure oxidation induction time ≥ 100
High pressure oxidation induction time ≥ 400
12. 85℃ thermal aging (%)

Atmospheric pressure OIT retention rate after 90 days

≥55
13. UV Resistant (%)High Pressure OUT retained after 1600 hrs ≥50