Road and railway laying geotextile cases

Geotextile is a building material used in civil engineering. Short fibers or long fibers are laid into a mesh shape through different equipment and processes, and then different fibers are entangled and entangled with each other through processes such as needle punching. Standardize the fabric to make the fabric soft and thick to meet the use requirements of different thicknesses. The mechanical functions of short filament geotextile/filament geotextile include water permeability, earthquake isolation, reverse filtration, drainage, stability, reinforcement, etc. It can adapt to unevenness. The uneven base layer can resist damage caused by external construction forces and has small creep. , with load holding function.

Role in road construction:

1. Base layer reinforcement: Non-woven geotextile can be used to strengthen the road base layer. It can prevent moisture penetration and sedimentation in the soil layer, increase soil stability, and improve the bearing capacity of roads.

2. Prevent soil loss: During road construction, Non-woven geotextile fabrics can be used to control soil erosion and soil loss. It can resist water erosion and wind erosion and protect the soil beside the road from being washed away.

3. Roadbed reinforcement: Non-woven geotextiles can be used to reinforce the roadbed. It can effectively disperse the load on the subgrade and provide good support to prevent the subgrade from sinking and collapsing.

4. Pavement repair: When the pavement appears cracked or damaged, non-woven geotextile can be used to repair the pavement. It can fill cracks, increase the strength and durability of pavement, and extend the life of the road.

5. Prevent lawn growth: In certain areas where roads need to be kept clean, non-woven geotextiles can be used to prevent lawn growth. It stops the growth of weeds and reduces the amount of maintenance required.

6. Between the shotcrete and the precast arch of a tunnel, the movement of the rock or the rough surface of the shotcrete can damage the isolation membrane between them, leading to water leakage. To avoid this danger, a geotextile is inserted between them, which can withstand high mechanical pressures, protects the isolation layer and acts as a filling layer, thus not only protecting the isolation layer, but also acting as a surface drainage, so that water seeping out of the rock, is channeled through the nonwoven fabric to the catchment pipe or downpipe.