Drainage Geonet – Geofantex

The Applications of Drainage Geonet – Geofantex

• Used to stabilize road and railway subgrades.
• The anti-seepage of municipal engineering, underground engineering of subways, buildings and roof reservoirs.
• Environmental protection and sanitation, domestic waste landfill, sewage treatment plant, Prevent cracks in the roadbed and avoid landslides.
• Strengthen the foundation, the slope of the embankment, improve the stability of the roadbed, and reduce the area occupied;
• It can bear heavy loads;
• Shorten the construction period of the project; the specifications and performance parameters of the geonet can also be constructed under harsh environmental conditions.
• It is used for pavement reinforcement, so that the grid and pavement materials can be integrated together, which can effectively disperse and transmit the load and prevent road cracks.

Drainage Geonet Role in engineering – Geofantex

• It has excellent waterproof and anti-seepage performance, the anti-seepage hydrostatic pressure can reach 1.0MPa or more, and the permeability coefficient is 5×10-9cm/s. Bentonite is a natural inorganic material, which will not cause an aging reaction and has good durability
• Lay between the foundation and the foundation to drain the accumulated water between the foundation and the foundation, block the capillary water and effectively integrate it into the edge drainage system. This structure automatically shortens the drainage path of the foundation, greatly reduces the drainage time, and can reduce the use of selected foundation materials (that is, materials with more fine materials and lower permeability can be used). Can extend the service life of the road.　
• Laying drainage nets on the sub-base layer can prevent the fine materials from the sub-base layer from entering the base layer (that is, it acts as isolation). The aggregate base layer will enter the upper part of the geonet to a limited extent. In this way, the composite geotechnical drainage net also has the potential function of restricting the lateral movement of the aggregate base layer. In this way, its function is similar to the reinforcement function of the geogrid. Generally speaking, the tensile strength and rigidity of composite geotechnical drainage nets are better than many geogrids used for foundation reinforcement, and this restriction will improve the supporting capacity of foundations.
• After the road is aging and cracks are formed, most of the rainwater will enter the section. In this case, the drainage net is laid directly under the road surface instead of the drainage foundation. The drainage net can collect water before it enters the foundation/subbase. Moreover, a film can be wrapped on the bottom of the drainage net to further prevent moisture from entering the foundation. For rigid road systems, this structure allows the design of roads with a higher drainage coefficient Cd. Another advantage of this structure is that it may hydrate the concrete more uniformly (research on the extent of this advantage is ongoing). Regardless of whether it is a rigid road or a flexible road system, this structure can extend the service life of the road.
• In the northern climate, laying drainage nets can help reduce the impact of frost heave. If the freezing depth is very deep, the geonet can be laid on a shallower position in the base as a capillary block. In addition, it is often necessary to replace it with a granular base layer that is not susceptible to frost heaving, extending downward to the depth of freezing. The backfill that is easy to frost heave can be directly filled on the surface of the drainage net to the ground line of the foundation. In this case, the system can be connected to the drainage outlet so that the groundwater level is at or below this depth. This can potentially limit the development of ice crystals, and there is no need to limit the traffic load when the ice melts in the cold region in spring.