Geomembrane Product Description

Geomembranes are impermeable synthetic liners designed for fluid containment and environmental protection in various engineering applications. Made from polymers like high-density polyethylene (HDPE), low-density polyethylene (LDPE), or polyvinyl chloride (PVC), they serve as barriers to prevent leakage, contamination, and erosion. This product specification outlines their features, uses, advantages, and handling procedures to support informed decision-making for projects worldwide.

Key Features

• Materials:
  • HDPE: Offers high tensile strength, UV resistance, and longevity (up to 50 years). Ideal for harsh environments.
  • LDPE: Flexible and cost-effective, suitable for temporary installations.
  • PVC: Easy to weld and install, with good chemical resistance for agricultural ponds.
• Physical Properties:
  • Thickness: Ranges from 0.5 mm to 3.0 mm, customizable for project needs.
  • Color Options: Typically black (for UV protection) or white (for reflectivity), with textured surfaces to enhance friction.
  • Strength Metrics: Tensile strength of 20-40 MPa, puncture resistance exceeding 500 N, and elongation at break of 700-1000%.
• Environmental Resistance:
  • Resists chemicals, acids, alkalis, and hydrocarbons, complying with standards like ASTM D5397 for chemical compatibility.
  • Temperature tolerance: -40°C to 80°C, ensuring performance in extreme climates.

Applications

Geomembranes are versatile for numerous sectors:

• Environmental Engineering:
  • Landfill liners to contain leachate and prevent groundwater contamination.
  • Mining tailings ponds for hazardous waste management.
• Water Management:
  • Reservoirs, canals, and dams for waterproofing and seepage control.
  • Decorative ponds and aquaculture systems in agriculture.
• Infrastructure:
  • Tunnel and roofing membranes for waterproofing in construction.
  • Secondary containment in industrial facilities to handle spills.

Benefits

• Durability: Long service life with minimal maintenance, reducing lifecycle costs.
• Environmental Protection: Prevents soil and water pollution, supporting sustainability goals.
• Cost-Effectiveness: Lower installation time and material costs compared to traditional methods like concrete.
• Versatility: Adaptable to irregular terrains and scalable for large-scale projects.

Technical Specifications

Installation Guidelines

Proper installation ensures optimal performance:

1. Site Preparation:
   • Clear debris and level the subgrade; use geotextiles underlay for added protection.
   • Conduct soil tests for compatibility.
2. Deployment:
   • Unroll geomembrane sheets, allowing for thermal expansion with overlaps of 100-150 mm.
   • Weld seams using hot wedge or extrusion methods, tested for integrity per ASTM D6392.
3. Anchoring and Protection:
   • Secure edges in trenches or with ballast; cover with soil or protective layers to prevent damage.
4. Quality Control:
   • Perform spark testing or vacuum box checks for leaks.
   • Document all steps for compliance audits.

Safety and Environmental Considerations

• Handling Precautions: Wear gloves and eye protection during installation to avoid cuts from sharp edges. Store rolls vertically in shaded areas to prevent UV degradation.
• Regulatory Compliance: Meets ISO 9001 for quality management and EPA standards for environmental safety. Biodegradable options are available for eco-sensitive projects.
• End-of-Life: Recyclable through specialized programs to minimize waste; consult manufacturers for disposal protocols.

In summary, geomembranes provide reliable, efficient solutions for containment challenges across industries. For custom orders or technical support, contact suppliers with project specifications to ensure suitability.