Composite Drainage Geonet
High-Performance 3D Drainage Solution for Engineering Applications
Composite drainage geonet is manufactured from high-density polyethylene (HDPE) with a three-dimensional core bonded to geotextile layers. It forms continuous drainage channels that ensure fast water discharge even under high pressure while preventing soil clogging. The system integrates drainage, filtration, ventilation and protection, making it an ideal solution for demanding civil engineering environments.
Engineered 3D Composite Structure
The HDPE core combined with geotextile layers creates a highly efficient drainage system. Water flows horizontally through the core while the geotextile filters fine particles, ensuring long-term drainage stability and preventing blockage.
Key Features & Benefits
1. Excellent drainage capacity comparable to gravel layers
2. High tensile strength and compression resistance
3. Anti-clogging structure for long-term performance
4. Withstands compressive loads up to 3000 kPa
5. Corrosion-resistant and long service life
6. Easy installation reduces labor and cost
2. High tensile strength and compression resistance
3. Anti-clogging structure for long-term performance
4. Withstands compressive loads up to 3000 kPa
5. Corrosion-resistant and long service life
6. Easy installation reduces labor and cost
Applications
Widely used in highways, railways, tunnels, municipal engineering, landfills, retaining walls and slope drainage systems. It provides reliable subsurface drainage and improves long-term structural stability.
Landfills – Leachate and gas drainage systems
Highways & Railways – Subgrade drainage, extend pavement life
Tunnels – Lining drainage, reduce water pressure
Retaining Walls & Slopes – Relieve hydrostatic pressure, prevent erosion
Municipal Works – Foundation and underground drainage
Landscaping & Green Roofs – Drainage + filtration for vegetation systems
Technical Specifications (CJ/T 452-2014)
| Property | Geonet | Composite Geonet |
|---|---|---|
| Density (g/cm³) | ≥0.939 | - |
| Carbon Black Content (%) | 2–3 | - |
| Tensile Strength (kN/m) | ≥8.0 | ≥16.0 |
| In-plane Flow Rate (m²/s) | ≥3.0×10⁻³ | ≥3.0×10⁻⁴ |
| Peel Strength (kN/m) | - | ≥0.17 |
| Geotextile Weight (g/m²) | - | ≥200 |
Note: Technical indicators comply with GB/T 17639 standards.
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