3D Composite Geonet
High-Strength HDPE Drainage Core with Integrated Filtration System
3D Composite Geonet is an advanced geosynthetic drainage material consisting of a three-dimensional HDPE geonet core bonded with nonwoven geotextile layers. It forms continuous drainage channels that enable rapid water discharge while preventing soil intrusion. Compared with traditional gravel drainage systems, it significantly reduces construction thickness, improves drainage efficiency, and ensures long-term stability under high load conditions.
3000 kPa+
Compressive Resistance
3D Structure
High Flow Capacity
50%+
Cost Reduction vs Gravel
Long Life
Chemical Resistance
Engineered 3D Drainage Core
The internal tri-planar structure creates stable void space for water flow even under high compressive loads. The geotextile layer acts as a filter, preventing soil migration while maintaining permeability. This dual-function system ensures efficient drainage and long-term reliability.
• Maintains drainage performance under heavy loads
• Prevents clogging from fine particles
• Reduces hydrostatic pressure effectively
• Prevents clogging from fine particles
• Reduces hydrostatic pressure effectively
Key Features
• Superior in-plane drainage capacity compared to traditional systems
• High tensile strength ensures structural integrity during installation
• Anti-clogging filtration enhances long-term performance
• Lightweight design reduces transportation and labor costs
• Excellent chemical and UV resistance for harsh environments
• Suitable for large-scale infrastructure and environmental projects
• High tensile strength ensures structural integrity during installation
• Anti-clogging filtration enhances long-term performance
• Lightweight design reduces transportation and labor costs
• Excellent chemical and UV resistance for harsh environments
• Suitable for large-scale infrastructure and environmental projects
Typical Applications
Landfill leachate collection systems, highway and railway subgrade drainage, tunnel waterproofing systems, retaining wall back drainage, slope stabilization projects, and municipal infrastructure requiring efficient subsurface drainage.
Why Replace Gravel Drainage?
| Item | Gravel Layer | 3D Composite Geonet |
|---|---|---|
| Thickness | High | Low |
| Installation | Complex | Fast & Easy |
| Cost | High | Lower |
| Drainage Efficiency | Medium | High |
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 |
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