The specific application of permeable geotextile in highway and how to set the specification parameters (graphic)

OF: Time: 2019-12-04 07:23:16 Click: 1949 is a permeable geotextile geotextile, not only have high tensile strength and ductility of the vertical and horizontal directions, but also has good acid Chemical stability and aging resistance. In addition, the three-dimensional pore structure of the cloth gives it excellent permeability and reverse filtration characteristics. We usually call geotextiles permeable geotextiles, or non-woven fabrics. The difference between waterproof geotextile (HDPE impermeable membrane), impermeable geotextile (impermeable membrane) and composite geotextile (composite geotextile) is Low water vapor permeability coefficient impervious geotextile has anti-seepage effect. According to reports, permeable geotextiles were widely used in highways, railways, highways and other foreign highway projects in the 1980s and 1990s. With the economic modernization process since China's reform and opening up, the Party Central Committee has vigorously promoted the construction of highways, provincial highways and highway networks. Geotextiles are increasingly used in highway engineering and become a rising star. In road maintenance, high-quality non-woven fabrics with good flexibility can be used more than 10 times. When the road temperature of SBS modified asphalt mixture is about 160℃, it is required that the laminated non-woven fabric at this temperature will not be curled or melted, because the melting point of the fabric is 220℃, so that the fabric maintains good stability. Deformation and wrinkles occur. Usually, network cracks, cracks and grouting are caused by incorrect structure and temperature. Geotextile can repair these difficulties. When cracks appear, they need to be excavated and cleaned up again. First, lay the non-woven fabric on the surface of the soil layer of the base layer. As the non-woven fabric has good stretch and ductility, its uneven base surface can disperse the stress on the road, make the stress less concentrated, and prevent road cracking. Rotation is a phenomenon in which surface water cannot seep into the ground, causing water and cannot withstand the normal pressure caused by this. The non-woven fabric can be combined with the asphalt layer to form a sealed waterproof layer to prevent surface water from penetrating into the matrix and avoid the appearance of paste. The permeable geotextile has the advantages of convenient transportation, convenient construction and short construction period, which can save 50% of the project cost. Of course, it can be used together with geotextile grids, steel-plastic grids and other geotextile environmental protection materials in the road field with better results. It has become a trend that cloth is widely used in road engineering. Related tags: Previous: Authoritative statistics, the number of nonwovens exports and domestic demand in 2018 still maintains rapid growth