A Study On The Application Of Stabilized Rubber Modified Asphalt Ultra-thin Wearing Course

In recent years,with the increasing shortage of raw materials for asphalt pavement in the world,and the awareness of energy saving,emission reduction as well as green environmental protection,more and more researchers and highway management and construction departments prefer to make stable rubber modified asphalt by adding waste tire into rubber powder and then to asphalt.The stable rubber modified asphalt is a new material of rubber asphalt family.It not only has the advantages of rubber asphalt,but also overcomes the disadvantages of poor thermal stability,easy segregation and easy precipitation of rubber asphalt.In recent years,the stabilized rubber modified asphalt shows a good road performance,incuding:(1)its unique buffering performance enabling the vehicle to maintain a lower noise in the process of high-speed driving;(2)improving the friction between automobile tires and the ground;(3)maintaining high stability under strong ultraviolet radiation;(4)showing unique characteristics of uneasy to precipitate;and(5)having the sufficient light absorption capacity to avoid the influence of reflected light from the ground on the driver.Based on these characteristics,rubber asphalt can be used in road surface wear layer to give full play to its characteristics.In this dissertation,based on the municipal road in Hongshan District of Chifeng City,Inner Mongolia,a study on the ultra-thin wear layer of stabilized rubber modified asphalt is carried out.The purpose of this dissertation is to apply the stabilized rubber modified asphalt to the ultra-thin surface layer of urban road or to the overlay of overhauled road.The engineering application conditions,mixture ratio design,road performance,mechanical properties and construction technology of the stabilized rubber modified asphalt ultra-thin wear layer are systematically studied,to show the applicability of the stabilized rubber modified asphalt.This study will lay a solid foundation for the widespread application of stable rubber modified asphalt ultrathin mixture in road engineering.