| Customization: | Available |
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| Width: | 1-10m |
| Endurance Properties: | Oxidative Degradation. |
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The manufacturing of geomembranes begins with the production of the raw materials, which include the polymer resin, and various additives such as antioxidants, plasticizers, fillers, carbon black, and lubricants (as a processing aid). These raw materials (i.e., the "formulation") are then processed into sheets of various widths and thickness by extrusion, calendering, and/or spread coating.
The US market is currently divided between HDPE, LLDPE, fPP, PVC, CSPE-R, EPDM-R and others (such as EIA-R), and can be summarized as follows:[citation needed] (Note that M m2 refers to millions of square meters.)
The majority of generic geomembrane test methods that are referenced worldwide are by the ASTM International|American Society of Testing and Materials (ASTM) due to their long history in this activity. More recent are test method developed by the International Organization for Standardization (ISO). Lastly, the Geosynthetic Research Institute (GRI) has developed test methods that are only for test methods not addressed by ASTM or ISO. Of course, individual countries and manufacturers often have specific (and sometimes) proprietary test methods.
Made from special virgin resin by blow film process
The main physical properties of geomembranes in the as-manufactured state are:
There are a number of mechanical tests that have been developed to determine the strength of polymeric sheet materials. Many have been adopted for use in evaluating geomembranes. They represent both quality control and design, i.e., index versus performance tests.
| No. | Item | Test Value | ||||||
| 0.75mm | 1.0 mm | 1.25 mm | 1.5 mm | 2.0 mm | 2.5 mm | 3.0mm | ||
| 1 | Minimum Density(g/cm³) | 0.939 | ||||||
| 2 | Tensile Property | |||||||
| Strength at yield,N/mm | 11 | 15 | 18 | 22 | 29 | 37 | 44 | |
| Strength at break ,N/mm | 20 | 27 | 33 | 40 | 53 | 67 | 80 | |
| Elongation at yield,% | 12 | |||||||
| Elongation at break,% | 700 | |||||||
| 3 | Tear Resistance N | 93 | 125 | 156 | 187 | 249 | 311 | 374 |
| 4 | Puncture Resistance N | 240 | 320 | 400 | 480 | 640 | 800 | 960 |
| 5 | Stress Crack Resistance, hrs | 300 | ||||||
| 6 | Carbon Black Content, % | 2.0-3.0 | ||||||
| Carbon Black Dispersion | 1 or 2 | |||||||
| 7 | Standard OTI Min | 100 | ||||||
| High Pressure OTI Min | 400 | |||||||
| 8 | Impact Cold Crack at -70°C | Pass | ||||||
| 9 | Water vapor permeability | ≤1.0×10-13 | ||||||
| (gNaN/cm2 .s.Pa) | ||||||||
| 10 | Dimensional Stability (%) | ±2 | ||||||
| Area | Application of Geosynthetics |
| Hydraulic | Lagooning and Water Treatment, Ornamental Ponds, Golf Courses Aquaculture and Desalination Water LagoonsTanks, Reservoirs, Liquid WasteFloating Cover SolutionsDrainage and FiltrationShading Cover Solutions |
| Environment | Tailing ponds, Leach mining,Landfills,Landfill Capping,Protection against corrosion,Vertical Barriers |
| Civil Works | Erosion Control, Secondary Containment, Tunnels,Linear and Surface Works,Consolidation of Margins,Soil Reinforcement,Soil Separation. |
| Building | Parkings,Roofing,Soundproofing building |
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