Non-woven geotextiles are a type of non-woven fabrics. Its characteristic is that it does not require weaving. The non-woven geotextiles we often say are mainly made through repeated acupuncture processes, so some non-woven geotextiles are also called needle-punched geotextiles, and they are mainly divided into two types in terms of classification, namely Filament needle punched geotextiles and staple fiber needle punched geotextiles.
Because the non-woven geotextile is made by repeated needle punching, it has many characteristics that other geotextiles do not have, such as the pore structure belongs to a three-dimensional state, which also determines that the water permeability of the non-woven geotextile is very good. Different geotextiles have different pore size ranges, so the water permeability is also divided into strengths and weaknesses.
Introduction of 5 major functions of non-woven geotextiles:
1. Non-woven geotextiles can be used in road construction, not only to prevent the water from washing away the soil, but also to prevent uneven settlement of the foundation;
2. In terms of pavement reconstruction, on the one hand, it can repair cracks and on the other hand, it can delay the occurrence of pavement cracks;
3. Non-woven geotextiles can be used as drainage materials for subway tunnels, using the performance characteristics of geotextiles with good permeability and good plane drainage;
4. It can be used as an isolation layer. If different materials are stacked together, in order to maintain the overall structure without mixing layers, non-woven geotextiles 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 its role in plane drainage.