3D Composite Drainage Geonet With 16 kN/m Tensile Strength

Product Specification

The 3D Composite Drainage Geonet is an innovative, high-performance geosynthetic material designed for efficient drainage and soil stabilization in a variety of civil engineering and environmental applications. Combining the benefits of a three-dimensional drainage core with geotextile filtration layers, this product offers superior water management, enhanced load distribution, and long-term durability.

Key Features:

Superior Drainage Performance: Rapid water removal and reduced hydrostatic pressure.

Enhanced Structural Integrity: Combines drainage, separation, and reinforcement functions.

Durability: Resistant to chemical, UV, and biological degradation.

Cost-Effective: Reduces material and maintenance costs while extending structure lifespan.

Versatility: Suitable for a wide range of applications, from road construction to frost protection.

Applications:

1.Road and railway construction

2.Landfill liners and caps

3.Retaining walls and slope stabilization

4.Green roofs and sports fields

5.Frost protection in cold climates

Specifications:

Material: High-Density Polyethylene (HDPE)

Width: Standard rolls of 2m to 6m wide, customizable

Tensile Strength: High tensile strength to withstand heavy loads

Flow Rate: Excellent in-plane flow capacity (varies by thickness)

Product Specification and Technical Index

(CJ/T 452—2014)

Why Choose Our 3D Composite Drainage Geonet?

1. Foundation and Subbase Drainage:
The 3D Composite Drainage Geonet is installed between the foundation and subbase to effectively drain accumulated water, block capillary water, and integrate seamlessly with edge drainage systems. This innovative structure significantly shortens the drainage path within the foundation, drastically reducing drainage time. Additionally, it allows for the use of less permeable, finer-grained materials in the foundation, optimizing material selection and reducing costs. By enhancing drainage efficiency, this solution extends the lifespan of roadways and other structures.

2. Subbase Stabilization and Isolation:
When laid within the subbase, the 3D Composite Drainage Geonet prevents fine particles from migrating into the foundation layer, effectively acting as a separator. The aggregate subbase partially embeds into the upper layer of the geonet, which also helps restrict lateral movement of the subbase materials. This dual functionality mimics the reinforcement properties of geogrids, enhancing the structural integrity of the foundation. With superior tensile strength and rigidity compared to many geogrids, the 3D Composite Drainage Geonet significantly improves the load-bearing capacity of the foundation.

3. Pavement Preservation and Moisture Management:
As roads age and develop cracks, rainwater can infiltrate the structure, leading to further deterioration. By installing the 3D Composite Drainage Geonet directly beneath the pavement surface, it serves as a replacement for traditional drainable bases. The geonet collects moisture before it reaches the foundation or subbase, and an optional membrane layer at the bottom can further prevent water infiltration. For rigid pavement systems, this design allows for higher drainage coefficients (Cd), optimizing road performance. Additionally, this structure promotes more uniform hydration of concrete, potentially enhancing its durability (ongoing research is exploring this benefit further). Whether used in rigid or flexible pavement systems, the 3D Composite Drainage Geonet significantly extends the service life of roadways.

4. Frost Heave Mitigation in Cold Climates:
In regions with freezing temperatures, the 3D Composite Drainage Geonet helps mitigate the effects of frost heave. When frost penetration is deep, the geonet can be installed at a shallower depth within the subbase to act as a capillary barrier. It is often paired with a non-frost-susceptible granular subbase that extends to the frost line. Frost-susceptible backfill can be placed directly above the geonet, up to the foundation level. This system can be connected to drainage outlets to maintain the groundwater level at or below the frost depth, effectively limiting the formation of ice lenses. As a result, traffic load restrictions during spring thaw can be minimized, ensuring year-round usability in cold climates.

Seaming and Overlapping of 3D Composite Drainage Geonet?

1.Orientation Adjustment:
Adjust the orientation of the geosynthetic material so that the length of the roll is perpendicular to the road.

2.End-to-End Connection:
The composite drainage geonet must be connected end-to-end. The geotextile on adjacent geonet cores should overlap along the roll.

3.Securing the Rolls:
Connect adjacent rolls of the geonet core using white or yellow plastic clips or polymer straps. Secure the rolls with straps at intervals of 3 feet (approximately 1 meter) along the length of the roll.

4.Overlapping Geotextile Direction:
The direction of the overlapping geotextile should align with the direction of the fill placement. If the geosynthetic material is installed between the foundation/subgrade and the subbase, the overlapping geotextile should be fixed using continuous wedge welding, flat welding, or sewing. If sewing is used, a flat seam or standard seam method is recommended to meet the required stitch length.

Contact Us:

For more information or to request a quote, please contact our sales team. We are here to help you find the perfect solution for your project.