The Study Of Central Plant Hot Recycling Mixture Reclaim Process

Hot reclaim has been increasingly applied to all levels of the highway in repair and overhaul. Most people think that the re-use of old asphalt mixture can not only save resources, but also can reduce environmental pollution caused by waste. However, at present, our country has not have a unified production process. In this paper, mainly studying the production process in the regeneration of the asphalt mixture in order to give a better production process.In this paper, mainly including four parts: 1、The control of construction temperature of the old asphalt mixture; 2、The studying of production process and quality control; 3、The studying of renewable asphalt mixture performance; 4、The studying of the regeneration law of the aging asphalt.Through the above analysis, the paper gives the following conclusions: 1、Arriving at a preheating temperature combinations to meet the mixing temperature requirements; and identified the relationship between best mixing temperature and best compaction temperature of hot recycling asphalt mixture and the ratio of old material ; 2、Evaluating the road performance by apply of gray relational analysis , and give a better process (Including how to add the regeneration、how long the mixing time and the preheating temperature of RAP ) ; 3、According to the results of the road performance test, come to the penetration scope which can meet the performance requirements; 4、Through analyzing the mixture of old asphalt and new asphalt, give the regeneration law of new asphalt to the old asphalt and regeneration to the old asphalt.