IS 15909 : 2020
Textiles - Poly Vinyl Chloride (PVC) Geomembranes
1. Summary about Poly Vinyl Chloride (PVC) Geomembranes
PVC geomembranes are flexible synthetic liners used for waterproofing, containment, and environmental protection in canals, ponds, landfills, and industrial lining systems.
2. Why BIS Certificate is Mandatory for PVC Geomembranes
BIS certification is mandatory to ensure consistent impermeability, mechanical strength, and resistance to environmental degradation. Failure can lead to leakage and environmental damage.
3. What is BIS Certified for PVC Geomembranes
BIS certification verifies compliance with Indian Standards covering thickness uniformity, tensile strength, elongation, permeability, and durability.
Tests required for Poly Vinyl Chloride (PVC) Geomembranes
| Title | Mandatory/Optional |
|---|---|
| Material and Manufacture | Optional |
Requirement of PVC Geomembranes, Category A
| Title | Mandatory/Optional |
|---|---|
| Length and width | Required |
| Thickness | Required |
| Specific gravity | Required |
| Tensile strength | Required |
| Elongation at break | Required |
| Tear resistance | Required |
| Index puncture resistance | Required |
| Low temperature crack resistance | Required |
| Hydrostatic resistance | Required |
| Seam strength | Required |
| Volatile loss | Required |
| Peel strength | Required |
| Resistance to soil burial | Optional |
| Water extraction | Required |
| Stability to ultraviolet radiations, percent retention in tensile strength and elongation at break | Optional |
| Dimensions and Tolerances | Required |
| Colour, Surface Characteristi cs and Freedom from Defects | Required |
Requirement of PVC Geomembranes, Category B
| Title | Mandatory/Optional |
|---|---|
| Length and width | Required |
| Thickness at 20 kPa pressure | Required |
| Specific gravity | Required |
| Tensile strength | Required |
| Elongation at break | Required |
| Tear propagation strength | Required |
| Behaviour during perforation (Static puncture test) | Required |
| Height of fall without perforation | Required |
| Cold crack resistance at low temperature | Required |
| Hydrostatic pressure resistance | Required |
| Dimensional stability at 80 ºC for 6 h | Required |
| Change of dimensioning after heating at 70 ºC for 2 h | Required |
| Behaviour after storage in aqueous solution, resistance to acid and alkali after 28 days | Required |
| Strength of welded seam shear resistance | Required |
| Resistance to static puncturing | Required |
| Flammability test, horizontal and vertical rate of burning | Required |
| Dimensions and Tolerances | Required |
| Colour, Surface Characteristi cs and Freedom from Defects | Required |
4. Benefits of BIS Certification for PVC Geomembranes
- Ensures reliable containment and waterproofing
- Mandatory for environmental and infrastructure use
- Improves resistance to chemicals and weathering
- Reduces leakage and failure risk
- Builds regulatory and project-level confidence