Superpave Application And Research On Tonglu Road

This article introduces the history of bituminous mixture design method at first, as well as the research and development background of SHRP (Strategic Highway Research Program) plan in the USA and Superpave (Superior Performing Asphalt Pavement). Elaborate the necessity of Superpave's "China melts" through carrying on the contrast with the present highway construction situation in our countryDepending on the project of Tongliao to Lubei road in Mongolia Autonomous Region, this paper have a exhaustive introduction to Superpave, including its design idea, theory principle, the performing grade and appraisal mechanism of asphalt binder, control points and restricted zone in aggregate gradation specification and the latest progress in Superpave. Giving an example of Superpave-19.0mm design in sub-course layer and Superpave-12.5mm in the surface layer: the design temperature evaluate, the choice of performing grade of asphalt binder, asphalt mechanical tests; the choice of aggregate gradation, the choice of optimum proportion of asphalt, and construction quality control test using Marshall Method. Using the practical experience and the question meets in the engineering project, carrying on the analysis comparing with our country present bituminous pavement design standard, proposed the question, and draw the related conclusion..Finally, proposed some questions which the Superpave "China melts" process has not yet solved, providing the reference for the next research in the future.