Briefly introduce what non-woven geotextile is and its main function

What is geotextile? As the name implies, geotextile is a geosynthetic fabric, which is very different from the production method of geotextile and composite membrane. According to its production process, it can be divided into woven fabrics and non-woven fabrics. Usually we say that geotextile refers to non-woven fabric made by repeated needle punching process. In addition, woven fabric refers to woven geotextile such as woven fabric and woven fabric. The woven fabric here is a grass control cloth commonly used by farmers. , Weeding cloth. Then according to the raw materials, non-woven fabrics can be divided into short needle-punched non-woven fabrics and filament-spun needle-punched non-woven fabrics. The function of geotextile As geotextile is a process of repeated needle punching, it has a three-dimensional pore structure. We used to call it the equivalent aperture. The equivalent pore diameter of the short fiber cloth is usually in the range of 0.07 to 0.2 mm, and the equivalent pore diameter of the filament cloth is in the range of 0.05 to 0.2 mm. Its three-dimensional structure makes it have good water permeability, so actual users also call it permeable geotextile. Because it has good breaking strength, here refers to tension, so its main function is to strengthen and protect. In addition, it has the main function of permeable soil. This main feature is called'reverse filtration'. In summary, non-woven fabrics have water permeability, enhanced protection and anti-filtering functions. According to reports, as early as the 1970s and 1980s, European geotextiles were widely used in various projects, such as traffic roads, airport runways, embankments and slope protection. With the rapid development of China's economy, geotextiles with 'low cost and good effect' have become the first choice for civil engineering in various fields of civil construction.