What is a three-dimensional geotechnical drainage net?

A three-dimensional geotechnical drainage net is made of high-density polyethylene. It is a material used in geotechnical engineering for drainage, filtration, and soil reinforcement. It is made from high-strength polymer materials that offer tensile strength, chemical resistance, and excellent drainage properties.

Three-dimensional geotechnical drainage network product specifications

Mesh core thickness: 5㎜~8㎜; width 2~4m, length according to user requirements.

Three-dimensional geotechnical drainage net product features

1. Strong drainage (equal to one-meter thick gravel drainage).

2. High tensile strength.

3. Reduce the chance of geotextiles embedded in the mesh core and maintain long-term stable drainage.

4. Withstand high-pressure load for a long time (can withstand the compressive load of about 3000Ka).

5. Corrosion resistance, acid and alkali resistance, long service life.

6. Convenient construction, shortening the construction period and reducing costs.

Main application performance of three-dimensional geotechnical drainage network

1. The three-dimensional geotechnical drainage network is laid between the foundation and the subbase to drain accumulated water between the foundation and the subbase, block capillary water, and integrate into the edge drainage system. This structure shortens the foundation’s drainage path, shortens the drainage time, and can reduce the use of selected foundation materials (that is, materials with more fines and lower permeability can be used). It can extend the service life of the road.

2. Laying a three-dimensional composite drainage network on the subbase can prevent fine materials from entering the foundation layer (that is, it plays an isolation role). The total base will penetrate the upper part of the geonet to a limited extent. It also has the potential to limit lateral movement of the total base, acting to the reinforcing effect of a geogrid. Generally speaking, three-dimensional composite drainage nets’ tensile strength and rigidity are better than those of many geogrids used for foundation reinforcement. This restriction effect will improve the support capacity of the foundation.

3. Most rainwater will enter the section After the road ages and cracks form. In this case, the three-dimensional composite drainage network is laid under the road surface instead of the drainable foundation. Three-dimensional composite drainage mesh can collect water before it enters the foundation/subbase. Moreover, a film can be wrapped on the bottom of the three-dimensional composite drainage network to prevent moisture from entering the foundation. For rigid road systems, this structure allows the road to be designed with a higher drainage coefficient Cd. Another advantage of this structure is that it may allow the concrete to hydrate more (research into the extent of this advantage is ongoing). Whether for rigid or flexible road systems, this structure can extend the service life of the road.

4. Under cold conditions, laying a three-dimensional composite drainage network can help reduce the impact of frost heave. If the freeze depth is deep, geonets can be laid shallower in the subbase to act as capillary blockers. Besides, replacing it with a granular subbase that is not susceptible to frost heaving and extends downward to the freezing depth is often necessary. Backfill soil prone to frost heaving can be filled on top of the three-dimensional composite drainage network until the ground line of the foundation. The system can be connected to a drainage outlet so the water table is at or below this depth. This could limit the development of ice crystals and reduce the need to limit traffic loads during spring ice melt in colder regions.

Application scope of three-dimensional geotechnical drainage network

Landfill drainage, roadbed, and road drainage, railway drainage, tunnel drainage, underground structure drainage, retaining wall back drainage, garden, and sports ground drainage.

Three-dimensional geotechnical drainage network seams and laps

1. Adjust the direction of geosynthetic materials and adjust the vertical roll length of the material on the road.

2. The composite geotechnical drainage network must be connected to the adjacent geotechnical network, and the geosynthetic material core roller must be along the joint.

3. The white or yellow plastic buckles or polymers are connected to the adjacent Hongxiang geomaterial volumes of the geonet core, thereby connecting the rolls. Attach straps every 3 feet along the length of the roll of material.

4. The overlapping fabric and packaging stacking direction are in the same direction. If the foundation, base layer, and sub-base geotextile are laid, continuous welding, wedge welding, or stitching is required to make up the

Geotextile layers can be fixed. If suturing, it is recommended to use a cover stitch or general suturing method to achieve the smallest required loop length.

A three-dimensional geotechnical drainage net is a multifunctional engineering material that can solve drainage and soil strengthening problems in civil engineering through its unique structure and performance. Suppose you need three-dimensional geotechnical drainage net products. In that case, you can contact us, and our engineers will provide professional guidance for your three-dimensional geotechnical drainage net project free of charge. Besides, we can provide free three-dimensional geotechnical drainage net samples if needed.

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