Rubber Asphalt Concrete And Its Applications On Some Roads In Guangdong

Using the waste tire to pave the road surface can improve the quality of highwayengineering and prolong the service life of the road. It is according with national basicstrategy about saving resources and protecting the environment. Asphalt-rubber and itsmixture have unique advantages in reducing pavement thickness, extending lifetime ofpavement, delaying reflection crack, decreasing traffic noise and so on. This article focuses onthe study of the factors of influencing rubber asphalt performance and production process, therubber asphalt mixture design and performance of rubber asphalt concrete engineeringapplication cases.First introduced the rubber powder and rubber asphalt, mechanism of action of rubberasphalt, briefly introduces the laboratory test method in the research process of rubber asphaltperformance evaluation, analysis of the various factors affect the performance of rubberasphalt, including material factors (diameter of rubber powder, kind of rubber powder, dosageof rubber powder and the matrix asphalt types) and technical factors (shear temperature, shearrate and shear time); Introduces the production technology of rubber asphalt, including dryconstruction process and wet construction.Secondly, refers to the technical index of raw material of rubber asphalt mixture.Introduces the gradation design of rubber asphalt mixture (volume filling method), gradationselection, confirms the optimum asphalt content and mixture performance. Presents twodifferent kinds of rubber asphalt mixture gradation: gap gradation rubber asphalt mixture andopen graded asphalt rubber mixture.Finally, through the rubber asphalt in the Guangdong region of the engineeringapplication, introduce the rubber asphalt mixture of raw material, mix design, constructiontechnology and quality control.