As the use of non-woven geotextile cracked asphalt surface on the basis of the stress absorption delaying reflective cracking thin layer is effective measures, but the needle-punched nonwoven geotextiles performance will directly affect the effect of delaying reflective cracking. Needle-punched nonwoven geotextiles for road pavement delaying reflective cracking should have the following project characteristics: 1, good temperature resistance. Temperature asphalt hot shop when more than 150 degrees, higher asphalt temperature, requiring needle-punched nonwoven geotextile material at a temperature of not only this construction does not melt or soften filament geotextile, can maintain normal operation. It requires a temperature of 170 degrees capability 2, tensile strength and mass per unit area and other indicators should meet the technical requirements (tensile strength kn / m> 8, mass per unit area g / m) 3. Good asphalt adsorption. General construction is to uniformly sprayed layers of asphalt, holes and needle-punched nonwoven geotextiles, non-woven geotextile should be able to absorb the asphalt and saturated, requiring non-woven geotextile has good adsorption capacity. 4. Good flexibility. Flexible include toughness and surface hardness double meanings. . Toughness reaction nonwoven geotextile impact energy absorption capacity, integrated measurement of tensile strength and elongation, which can be approximated to the material; generally cbr experiment bursting strength to represent its surface hardness. 5. Good uniformity. Acupuncture non-woven geotextile anisotropic material, in order to ensure uniform strength, bidirectional intensity ratio should not exceed 1.2. In general, without the use of non-woven geotextile woven geotextile. 6, acid 7 anti-aging properties. Requirements needle-punched nonwoven geotextiles in roads to maintain a normal working condition over its useful life. 8, thickness requirements. To prevent the increase resulting set needle-punched nonwoven geotextile adverse negative effects asphalt surface, the thickness of the needle-punched nonwoven geotextile response to strict limits should generally be less than 2.0mm filament geotextile roll spread with artificial;. Cloth to smooth, and properly deformed left margin. Filament geotextile device usually overlap, stitching and welding several ways. Common suture and weld width is 0.1m or more, or more lap width common to 0.2M. Possible long-term exposure of geotextile should be welded or stitched. All the suture filament geotextile will need continuous suture stop (for example, point sewing is not allowed). Before stacking, stacking geotextile required minimum 150mm. The minimum interval selvage needle (data exposed edge) is at least 25mm. Geotextile sewn seams and most include a row line-shaped locking chain stitch. Line for suturing should exceed 60N resin materials for minimum tension, and with equal or exceed the geotextile resistant to chemical corrosion and UV. On any sewn geotextiles "dropped stitch" required in the event of impact of the central re-stitched. We must take appropriate measures to prevent the device in the soil, particulate matter or foreign substances into the geotextile layer. Lap cloth according to the terrain and the use of function can be divided into natural lap, stitched or welded. Filament geotextile in construction, geotextile geomembrane above natural overlap, the upper geotextile geomembrane seam welding or hot air. Hot air welding is the first filament geotextile convergence approach, which uses hot air gun to join two pieces of cloth instant high-temperature heating filament geotextile customized to local reach molten state, and the use of immediate force certain it securely bonded in together. In the wet (rain and snow) can not stop the hot sticky weather condition of convergence filament geotextile manufacturers, geotextile should take another approach to a suture convergence method, which uses a dedicated machine stops double stitched convergence, and the use of anti-chemical UV suture. Suture minimum width 10cm, naturally overlap when the minimum width is 20cm, when the hot air welding minimum width 20cm. About filament geotextile seaming, to use the same quality and geotextile sutures, sutures to be used to destroy chemical resistance and UV mapping to a stronger material. The best _ Edison filament geotextile new materials (certified) _ Tangshan filament geotextile material provided by the new Edison Company. Edison New Materials Co., Ltd. (www.fangshenmo.com) Shandong Texas, site construction materials leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Edison leadership in new materials with the staff warmly welcome all inquiries negotiations to create new materials Edison better future.