The Research On Recycling And Regeneration Of The Older Asphalt Pavement

On January 1, 2006, our country has officially implemented "Renewable Energy Law", as our country the construction of highway rapidly development, The earlier construction of highway entered the stage of extension service and changes one after another, Then there are Produces the massive Reclaimed Asphalt Pavement(RAP), The old asphalt pavement recycling and utilization of RAP is of great practical significance. In this paper, based on the construction projects of the Transportation department that "Asphalt Pavement Recycling key technologies research". In profits from the domestic and foreign research achievement of asphalt pavement reclaim technologies, explored the RAP of old asphalt pavement recycling material handling methods, And to recycles the material aging asphalt and rejuvenation agent carries on the performance analysis.Through the investigation and trial of the asphalt pavement material properties, The paper detailed analysis RAP to dig, brokenly, screening, pile up and carry samples. Summarized the experience of the overseas that recycling material performance eva- luation, the recycling method and the quality control. Through the mathematical sta- tistical methods analysis the data of RAP recovery significantly and divorced Analysis, According to the asphalt aging principle, this article introduced the newest asphalt recycling method, tests instrument as well as the sequence of operation of the American Strategic Highway Research Program. The author through the topic experiment design, carries on improvement exploration of the Abson asphalt recycling method, raised a more practical and reasonable Abson experimental method and operation steps. According to the regeneration mechanism of asphalt, the article Summarized the classification, the performance and the specification rejuvenation agent. And selected three kind of types rejuvenation agent (the clean oil, soft asphalt and the special rejuvenation agent) conducts mixing research with the aged asphalt. Discovered each kind rejuvenation agent to get the aged asphalt with the project in best to mix matches. Relying on the pilot project with the road paving blended into five Recycled Asphalt. Used the recycled asphalt Carried on conventional and the SUPERPAVE technical performance analysis.