Crumb Rubber Modified Bitumen is a relatively new type of accord materials for rubber modified asphalt, the rubber powder is added to improve the rubber asphalt pavement performance. Excellent performance rubber modified asphalt is to make a great contribution to environmental protection. Here, we look together crumb rubber modified asphalt main advantage of it. 1, the penetration is reduced, improving the softening point, viscosity increases, indicating that the high temperature stability of asphalt increased summer driving rutting, pushing phenomenon has improved. 2, the temperature sensitivity decreases. At lower temperatures, the asphalt becomes brittle so that the road stress cracking, at higher temperatures, the road becomes soft, deformable by the action of carrier vehicle. And after using crumb rubber modified asphalt temperature susceptibility improved flow resistance increase, crumb rubber modified asphalt viscosity coefficient greater than asphalt, bitumen modified instructions have a higher resistance to flow deformation. 3, the low temperature performance is improved. Powder can improve low temperature ductility of asphalt, bitumen increased flexibility. 4, the adhesion-enhancing. Stone surface adhesion due to increased film thickness of rubber asphalt, asphalt pavement can improve water resistance against the ability to extend the pavement life. 5, to reduce noise pollution. 6, increasing the vehicle's tire and road grip, improving driving safety. Rubber modified asphalt composites under heavy traffic asphalt and waste tire rubber powder and admixtures of joint action, by absorbing asphalt rubber powder resins, hydrocarbons and other organic matter, through a series of physical and chemical changes, is moist crumb, swelling, increased viscosity, softening point increase, taking into account the sticky rubber and asphalt, toughness, elasticity, thereby increasing the rubber asphalt pavement performance. 

keywords: Rubber powder, rubber powder, rubber powder,