Study On Modification Mechanism And Way-use Performance Of Scrap Tire Rubber Modified Asphalt

Scrap tire rubber powder is from scrap tire, comprehensive utilization of waste harmlesstire is one of the effective ways. Rubber powder as a pavement materials "modifier," wasadded to the asphalt or asphalt mixture, to improve the performance of the road, At the sametime, scrap tire rubber powder used in the asphalt pavement project can not only reducepossible of secondary pollution, have huge of environment protection, and also haveeconomic significance. The rubber powder in this paper, whether production process, particlesize, shapes and size is different, So we discuss the rubber powder available.The paper studies the rubber asphalt modification mechanism, through a lot of indoortest, studies of different rubber powder content and different rubber powder fineness, differentkinds of matrix asphalt and different process for rubber modified asphalt. According to thetest results and the practical engineering, this paper proposes the method on-site processingrubber modified asphalt.Throughout at home and abroad, for different rubber powder,the preparation technologyof rubber asphalt is different, The research of the application is through special rubber grainprocessing technology and made, In order to the good performance of rubber asphalt, In thispaper the preparation technology of rubber asphalt launched research. In order to determineprocessing technology of the rubber powder (shear rate, time, temperature and developmenttime).Through the matrix of asphalt mixture, rubber asphalt mixture, SBS modified asphaltmixture comparison test, found the high temperature stability, anti-crack resistance in lowtemperature and resistance to water damage performance can be improved with rubberpowder mixed in asphalt mixture in different degrees. So it can provide some useful technicalguidance for use of rubber asphalt in project.