Asphalt Rheological Properties Studied

In accordance to the defects presented in using the Chinese Road Asphalt Technical Standards to assess the asphalt performance as well as the facts that the SHRP test equipment of USA can not be widely employed in China since its being very expensive, the SHRP rheological concept is utilized in the research project to carry out the exploration of the rheological properties of modified and non-modified asphalt by using conventional tests such as penetration and ductility. The conclusions obtained by using the conventional test rheological index to assess asphalt performance are compared with those by using the SHRP rheological index and their certain correlation are found. The efficiency of using conventional test equipment to study the rheological properties and road performance of asphalt, therefore, are proved.Additionally the modification mechanism and the microscope characteristics of modified asphalt are analyzed in the paper to provide some theoretical base for future effective modification to asphalt.