HDPE geomembrane

1. Material Composition

HDPE geomembranes are manufactured from high-density polyethylene resin (≥97% purity) with specialized additives:

• Antioxidants: Prevent thermal degradation during installation

• UV stabilizers: Carbon black (2-3%) for extended outdoor service life

• Flexibility modifiers: Enhance cold-temperature performance

2. Key Performance Characteristics

Technical Advantages:
✔ Chemical inertness: Resists pH 1-14 solutions
✔ Temperature range: -60°C to +80°C operational
✔ Puncture resistance: >500N (ASTM D4833)

3. Primary Applications

3.1 Water Infrastructure

• Reservoirs: 0.75-2.5mm thickness for permanent lining

• Canals: 30% water loss reduction vs. compacted clay

3.2 Environmental Protection

• Landfill liners: Dual-layer systems with leak detection

• Leachate ponds: 20+ year chemical resistance

3.3 Mining Solutions

• Heap leach pads: 2.0mm+ thickness for acid containment

• Tailings storage: Seam strength ≥90% parent material

4. Installation Protocol

4.1 Subgrade Preparation

• Achieve 95% Proctor density

• Remove all particles >6mm diameter

• Verify <3% surface moisture

4.2 Deployment Techniques

• Unrolling: Downslope with 1.5% minimum gradient

• Anchoring: 300mm deep perimeter trench with 500mm fold-back

4.3 Seaming Methods

• Extrusion welding: For complex geometries

• Hot wedge: 20mm dual-track seams at 300-400°C

• Test frequency: 1 linear meter per 100m seam

5. Quality Assurance

6. Economic Benefits

• 50-year design life vs. 15 years for compacted clay

• 40% faster installation than alternative systems

• 30% cost savings over project lifecycle

Project Support Services:
→ Site-specific thickness calculations
→ Third-party installation inspection
→ Custom fabrication (up to 9m widths)

"Engineered containment for critical infrastructure"

Standards Compliance:

• GRI GM13 (Manufacturing)

• NSF/ANSI 61 (Potable Water)

• EPA Title 40 (Hazardous Waste)

(This technical specification contains 298 words of optimized engineering content)

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1. Chemical resistance charts

2. Installation video references

3. Case study performance data?