Polyester Polyamide Geotextile , For Roads

In the road industry there are four primary uses for Geotextiles: separation, drainage, filtration and reinforcement. In separation, inserting a properly designed Geotextile will keep layers of different sized particles separated from one another. In drainage, water is allowed to pass either downward through the Geotextile into the subsoil, or laterally within the Geotextile which functions as a drain. How it is used depends on the drainage requirements of the application.In filtration, the fabric allows water to move through the soil while restricting the movement of soil particles. In reinforcement,the Geotextile can actually strengthen the earth or it can increase apparent soil support. For example, when placed on sand it distributes the load evenly to reduce rutting. Geotextiles now are most widely used for stabilizing roads through separation and drainage.When the native soil beneath a road is very silty, or constantly wet and mucky, for example, its natural strength may be too low to support common traffic loads, and it has a tendency to shift under those loads. Although the subgrade may be reinforced with a base course of gravel, water moving upward carries soil fines or silt particles into the gravel, reducing its strength. Geotextiles keep the layers of subgrade and base materials separate and manage water movement through or off the roadbed.