Non-woven geotextile is a non-woven fabric. Its feature is that no weaving is required. The non-woven geotextiles we often say are mainly made by repeated acupuncture process, so some non-woven geotextiles are also called acupuncture geotextiles, which are mainly divided into two types in classification, namely filament acupuncture geotextiles and Staple fiber geotextile fiber needle punching geotextile.
Since the non-woven geotextile is made by repeated needling, the different processes make it have many characteristics that other geotextiles do not have, such as the pore structure is three-dimensional, which also determines the good water permeability of the non-woven geotextile . Different geotextiles have different pore size ranges, so water permeability also has advantages and disadvantages.
Introduction of 5 major functions of non-woven geotextiles:
1. Non-woven geotextiles can be used in road construction, which can not only prevent water from washing away the soil, but also prevent uneven settlement of the foundation;
2. In terms of pavement reconstruction, on the one hand, cracks can be repaired, and on the other hand, the occurrence of pavement cracks can be delayed;
3. Non-woven geotextiles can be used as drainage materials for subway tunnels, taking advantage of the performance characteristics of geotextiles with good air permeability and good plane drainage;
4. It can be used as an isolation layer. If different materials are stacked together, in order to keep the overall structure from mixing layers, a non-woven geotextile can be used for isolation.
5. Non-woven geotextiles can also be combined with some plastic films to form anti-seepage materials, but the non-woven geotextiles here mainly play the role of protecting the plastic film, and of course, occasionally play the role of plane drainage.