Geomembrane
A.Characteristics of Geomembrane
Geomembrane is an anti-seepage product with high polymer as basic material. It mainly funtions as prevent liquid from leakage and gas volatization. Raw meterial type are :VLDPE, LDPE, LLDPE, PB, HDPE, MDPE, EVA etc.
B.Applications of Geomembrane
In geotechnical engineering,Geomembrane mainly funtions as antiseepage and separation, meanwhile, reinforcement and protection emerge together with anti-seepage in projects as earth rock fill dam, rock fill dam, masonry dam, concrete dam, tailing dam, sewage reservoir and reservoir area, channel, reservoir etc; water tight lining function in subway, basement and tunnel; road and railway groundwork anti-seepage etc.
C.Technical parameters of Geomembrane
Geomembrane Physical identification Properties
NO. | Item | Properties | GL | GH | GL—1 | GL—2 | GH—1 | GH—2 | 1 | Tensile Strength MPa | ≥14 | ≥17 | ≥25 | 2 | Tensile Elongation % | ≥400 | ≥450 | ≥550 | 3 | Right-angle Tear Strength N/mm | ≥50 | ≥80 | ≥110 | 4 | Carton Black Content 1）% | ≥2 | 5 | Environment Endurance Stress Craze F20 h | — | — | — | ≥1500 | 6 | 200℃ Temperature oxidation inducement time min | — | — | — | ≥20 | 7 | Water vapour permeability g.cm | ≤1.0×10—16 | 8 | —70℃Low Temperature Impact Crisp up Capability | passed | 9 | Dimentional Stability % | ±3 | Black Geomembrane Requirement。 |
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