Brief Introduction of Composite Geomembrane
Modern transportation has put forward higher requirements on asphalt pavements of high-grade highways, and research around reducing road diseases and improving road life has been valued by countries around the world. The design overhaul period of asphalt pavement is 15 years. At present high quality HDPE geomembrane, the asphalt pavement in our country often needs to be repaired for 8-10 years. Based on the life of the road for 30 years, the data show that the maintenance cost for roads during this period is almost equal to the investment of new roads. It can be seen that increasing the life of highways and delaying the maintenance period is of vital importance. The main problem affecting the insufficient service life of asphalt concrete pavement is early pavement damage, the most prominent of which is pavement cracks.
How to improve and improve the performance of asphalt concrete and prevent cracks in asphalt pavement has been a major issue for transportation research and construction departments. There are two solutions: one is to improve the asphalt mixture by improving the gradation of the mineral mixture. High-temperature resistance to deformation; Second, improve the cohesion of asphalt mixture and improve the ability to resist deformation by improving asphalt performance quality HDPE geomembrane factory price. In recent years, according to a large number of practical applications and various theoretical analyses of transportation research and construction departments, adding polymer synthetic fiber-reinforced materials to asphalt mixtures can greatly improve the overall performance of asphalt concrete and fundamentally solve the service life of asphalt concrete pavements. The lack of problems has caused widespread concern in the research and construction departments of the transportation industry in China. It is becoming an important research and application direction of asphalt pavement. Polyester fiber is a new type of anti-crack reinforcing material specially developed by our company for fiber asphalt concrete. (Poly-xylylene terephthalate, PET) as the main raw material, adding a certain functional masterbatch, after melting, extrusion, high-speed spinning, high magnification stretching, after the special surface treatment process, using a special cutting machine The appearance of the cut is a bundle-like structure in which a plurality of fiber monofilaments are aggregated. When fibers are added to asphalt concrete, there are complex interactions between fibers and surrounding substrates (asphalt and asphalt mortar), fibers and fibers. According to various theoretical analyses and a large number of practical applications, it is proved that fibers not only modify asphalt Effect, it will also significantly affect the toughness and failure process of the asphalt mixture, that is, but it has also the effects of modification, reinforcement, and bridging, significantly improve the rut resistance and low-temperature crack resistance of asphalt concrete and delay fatigue life
In addition to the characteristics of ordinary polymer fibers, such as large fineness, high strength, and easy dispersion, polyester fibers also have outstanding high-temperature resistance. They can be widely used in hot-mixed asphalt concrete projects wholesale HDPE geomembrane, and can also be used to enhance crack resistance of high-strength concrete, Is the ideal multifunctional reinforcing material. After testing by many domestic authorities, the main technical performance indicators of polyester fiber produced by our company have reached an advanced level of similar foreign products.