Geosynthetic Barrier Systems (Single-Sided & Double-Sided Texturing)

Product Specification

Overview

Textured HDPE Geomembrane is a high-performance impermeable liner engineered with a specially designed rough surface to enhance friction properties and slope stability. Available in single-sided (one smooth side, one textured side) and double-sided (both sides textured) configurations, this geomembrane combines the exceptional hydraulic barrier performance of HDPE with superior interfacial shear strength. The textured surface, created through advanced co-extrusion or nitrogenation processes, provides increased resistance to sliding, making it ideal for steep slopes, landfill caps, and other challenging applications where stability is critical.

Key Features & Benefits

1. Enhanced Slope Stability & Friction

   • The textured surface (with friction coefficients up to 0.8 for advanced products) significantly increases shear resistance between the geomembrane and adjacent materials (soils, geotextiles), preventing slippage on steep slopes (up to 45°+).

2. Superior Impermeability

   • Provides an exceptional hydraulic barrier with a permeability coefficient ≤1.0 × 10⁻¹³ cm/s, effectively preventing fluid migration and contamination in critical containment applications.

3. Exceptional Durability & Longevity

   • Manufactured from 97.5% virgin high-density polyethylene (HDPE) with 2.5% carbon black and additives (antioxidants, UV stabilizers), it offers outstanding resistance to:

     • UV Radiation & Aging: Designed for exposed applications with a service life exceeding 30-50 years.

     • Chemicals: Resists acids, alkalis, oils, and over 80+ aggressive chemical media.

     • Puncture & Stress Cracking: High resistance to environmental stress cracking (ESCR) and puncture from roots or sharp aggregates.

4. Temperature Adaptability

   • Maintains performance across a wide temperature range (-60°C to 60°C), suitable for extreme environmental conditions.

5. Cost and Installation Efficiency

   • The pre-textured design eliminates the need for additional friction layers, simplifying installation and reducing overall material costs. Its flexibility allows for conformity to uneven subgrades.

Applications

Textured HDPE Geomembranes are the preferred solution for projects requiring superior interface friction:

• Landfill Caps & Base Liners: Prevents slippage of protective soil layers on slopes.

• Water & Reservoir Liners: Securely lines steep sides of potable water reservoirs, irrigation ponds, and canals.

• Mining & Heap Leach Pads: Provides stable lining for steep-sided leach pads and tailings dams.

• Tunnel & Civil Engineering: Waterproofing for tunnel walls and other structures requiring high friction.

• Contaminated Soil Capping: Ensures long-term integrity of isolation caps.

Installation Guidelines

1. Subgrade Preparation: The foundation must be smooth, compacted, and free of sharp rocks, debris, or protruding objects.

2. Panel Deployment: Unroll panels across the prepared subgrade. For slopes, unroll along the contour (not up and down). Ensure the textured side faces the direction of potential slippage (e.g., against soil or geotextile).

3. Panel Joining: Adjacent panels are typically joined using dual-track fusion welding for the geomembrane core, creating a continuous, leak-proof seam.

4. Anchoring: Secure the liner in anchor trenches at the top of slopes or perimeter.

5. Covering: Backfill with specified soil or aggregate carefully to avoid damaging the geomembrane using lightweight equipment initially.

Why Choose Our Textured HDPE Geomembrane?

• Certified Quality: Manufactured to meet or exceed ASTM, GRI-GM13, CJ/T234-2006, and other international standards.

• Advanced Texturing Technology: Our proprietary process ensures consistent, high-performance texturing that maintains the geomembrane's mechanical properties.

• Technical Expertise: Our engineering support team can provide design consultation and installation guidance to ensure optimal performance for your specific slope stability requirements.

• Customization: We offer a wide range of thicknesses, widths, and texturing options (single/double) to meet precise project specifications.

FAQ

Q: What is the difference between single-sided and double-sided textured geomembrane?
A: Single-sided textured geomembrane has one rough side (for high friction) and one smooth side (for easy welding on a flat surface). It is often used where the geomembrane is placed against a soil slope on one side and welded to a smooth panel on the other. Double-sided textured geomembrane has both sides rough and is used between two soil layers or geotextiles where high friction is required on both interfaces, such as in steep landfill caps.

Q: Can it be welded?
A: Yes, textured geomembranes can be welded using standard hot wedge or extrusion welding equipment. Special attention is needed to clean the textured surface near welds for optimal seam quality.

Q: How does its performance compare to smooth HDPE geomembrane?
A: While the impermeability is identical, the textured version provides significantly higher interface shear strength (friction), making it essential for slope applications. The texturing process may slightly reduce certain tensile properties compared to smooth geomembrane of the same thickness, but premium grades are engineered to minimize this difference.

Q: What is the typical lifespan?
A: When properly installed and protected from mechanical damage, textured HDPE geomembranes have a design life exceeding 50 years in buried applications and 30+ years in exposed conditions (with appropriate UV stabilizers).

Ordering Information

• Packaging: Supplied in robust rolls, wrapped in protective packaging for shipping and storage.

• Roll Dimensions: Standard widths from 3.0m to 8.0m. Standard roll lengths are typically 50m to 100m.

• Lead Time: Dependent on quantity and customization, typically 2-4 weeks.

Contact Us today for a quotation, technical data sheets, or project-specific design support.