Geocomposite combines geotextile and geonet or other materials, offering drainage, filtration, and reinforcement functions, ideal for landfill, roadbed, and subgrade drainage applications.
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Functional Structure of GeoComposite
Let’s see a sample composite—Geonet composite, showcasing the unique three-layer structure of Geonet with double-sided geotextile, this section highlights how the material integrates filtration, drainage, and protection functions within a single system.
Layered Technical Diagram of a sample geocomposite
(Left: Technical Cross-Section Illustration)
Layer 1 – Nonwoven Geotextile
Function: Filtration
Prevents soil particles from entering the drainage core while allowing water to pass through freely.Layer 2 – Geonet Core
Function: High Flow Drainage
Provides excellent in-plane flow capacity to collect and transmit water efficiently, even under high compressive loads.Layer 3 – Nonwoven Geotextile
Function: Protection & Filtration
Enhances overall durability, protects the geonet core from damage, and ensures consistent filtration on both sides.
Key Functional Advantages of this geocomposite
High compressive strength under long-term load
Excellent in-plane flow capacity, ideal for subsurface drainage
Combines filtration and drainage in one layer, reducing construction steps
Compatible with geomembrane and subgrade structures
Suitable for landfill drainage, road subgrade, retaining walls, and other geotechnical applications
Geonet Composite Product Comparison
Explore the key differences between various Geonet composite types, their structures, components, flow rates, and typical applications. Each type is designed to meet specific project requirements, from landfill drainage to subgrade stabilization.
| Type | Structure | Components | Flow Rate | Typical Use |
|---|---|---|---|---|
| Geonet + Geotextile | 3-layer | Geonet + Nonwoven Geotextile | ★★★ | Landfill drainage, subgrade |
| Geonet + Geomembrane | 2-layer | Geonet + HDPE Geomembrane | ★★☆ | Leachate collection, lining |
| Geonet + Double Geotextile | 3-layer | Geonet Core + Two Geotextile Layers | ★★★★ | Horizontal drainage, filtration & protection |
| Other Custom Composites | Flexible | Tailored Combinations | ★★–★★★★ | Project-specific applications |
📎 Click on each type to view detailed product specifications or download the corresponding PDF datasheet.
Performance Comparison Notes
Each Geonet composite type offers unique structural advantages depending on the engineering requirement.
Geonet + Geotextile composites combine filtration and drainage, ideal for landfill and subgrade systems.
Geonet + Geomembrane structures enhance leachate collection and lining performance, commonly used in environmental containment projects.
Double geotextile composites provide superior in-plane flow rate and protection, suitable for horizontal drainage layers in infrastructure and civil works.
Custom composites allow engineers to adapt materials to specific project conditions, optimizing performance and cost.
This matrix helps engineers and buyers quickly identify the most suitable Geonet composite structure based on performance and application scenarios.
other geocomposite
Typical Applications of Geocomposites
Geonet composites offer excellent filtration and drainage performance, making them ideal for a wide range of civil, environmental, and geotechnical projects. Below are four key application scenarios:
🏞️ Landfills & Environmental
Used as a leachate drainage layer beneath geomembrane, ensuring efficient flow and long-term environmental protection.
(Keyword: geocomposite drainage layer for landfill)
🚧 Subgrade Drainage
Provides high in-plane flow capacity for roadbeds, railways, and foundation layers, ensuring stable and durable subgrade structures.
(Keyword: geonet composite subgrade drainage system)
🌊 Tunnel & Reservoir Lining
Ensures controlled drainage and protection beneath waterproofing layers in tunnels and reservoirs, preventing water pressure build-up.
(Keyword: geonet geocomposite drainage for tunnel and reservoir lining)
🏗️ Retaining Structures
Acts as a filter and drainage medium behind retaining walls to relieve hydrostatic pressure and improve structural stability.
(Keyword: geonet composite filter and drainage behind retaining walls)
FAQ:
Frequently Asked Questions About Geocomposites
What is a geocomposite in drainage applications?
A geocomposite is a multi-layer material that combines different geosynthetics—typically a geonet core with one or two layers of geotextile—to provide both filtration and drainage functions in a single product. It allows liquids or gases to flow within the plane of the geonet while the geotextile filters soil particles, making it ideal for drainage systems in landfills, tunnels, and subgrade structures.
How does geocomposite differ from geonet or geotextile alone?
Geonet alone primarily provides in-plane drainage but lacks filtration capability. Geotextile alone offers filtration and separation but has limited drainage capacity under high loads. A geocomposite integrates both, using geotextile layers to filter and a geonet core to drain. This combination improves performance, reduces construction layers, and simplifies installation.
Which type of geocomposite is suitable for landfill leachate collection?
For landfill leachate collection, the most common choice is a geonet with double-sided nonwoven geotextile. This three-layer structure provides excellent in-plane flow capacity, high compressive strength, and effective filtration. It’s typically placed beneath geomembrane liners to collect and convey leachate efficiently while maintaining long-term stability.
Can geocomposites be welded or laminated with geomembranes?
Yes. Geocomposites can be factory-laminated or field-welded with geomembranes to create integrated drainage and lining systems. This is commonly used in environmental containment projects, such as landfills and reservoirs, to reduce installation time, minimize leakage risks, and enhance overall system performance.
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