The Research Of High-Modulus Asphalt Mixes

Rutting is always the most important distress to be prevented among all the asphalt pavement distress all over the world. The measures to prevent rutting include optimizing the gradation of asphalt mixture, modifying the binder and adding additive. High Module Asphalt Mixes, which has a better rutting resistance, has been increasingly applied to pavement construction in foreign countries.Based on the domestic climate and application of asphalt mixture, module variation of asphalt mixture has been studied systematically in this paper, processed with gradation, binder, additive and design method. In addition, the construction technical has also been studied according to the test section paving.The result indicates that: all of gradation, binder, additive and design method has effects on asphalt mixture module, but the extents are different. The Gradation has minimum effects, design method takes second place and bind has the distinguished effects. The modifications of PLAST and MODULE are the best. The study also indication that module correlated to rutting resistance closely. Dynamic stability become higher, when mixture module increases.