A Study Of Material Performance Of Asphalt Treated Permeable Base In Cold Area

The water damage of asphalt pavement has been one of the uppermost disease, also is one of primary reason which cause premature damage in our country highway. The water damage phenomenon is quite serious in cold area of our country. The massive pavement damage condition investigation of domestic and foreign indicated that, the free water enters the pavement structure is the most important factor creates the pavement damage. Therefore, It will improve the pavement performance and extend service of life enormously by establish pavement subdrainage system to remove excessive water to the edge of highway in time.Currently, it is already extensively launched the application study in road developed country, the trial road is also the mostly concentrated in southern of our country. The paper research ATPB's performance according to the weather characteristics of the north, through experiment. The asphalt treated permeable base (ATPB) material has been widely used due to its high drainability, construction rapidness and convenience. So it is suitable took ATPB as permeable base. The paper made sure the asphalt optimum content based on Binder Drainage Test and marshall stability test then study water permeability, the water stability, the anticracking at low temperature and mechanics performance by experiment, then concluded that ATPB-25 is more suitable as permeable base in cold area. Finally, based on the abroad research,the paper put forward some suggestions about the construction technique that the asphalt treated permeable base.