Asphalt Mixture Recycling Research

It is a new topic on the recycling of asphalt mixture presently in China.This paper, through the analysis of asphalt recycling mechanism, a scientific approach of asphalt recycling is proved up. New recycling agent and modifying addition agent have been exploited successfully by many tests.Based on the technological characters of emulsified asphalt recycled mixture (EARM) and cement-emulsified asphalt recycled mixture (CEARM), this paper analyzed its composition structure and studied its mechanism of strength.This paper, based on an old pavement projects, the performance and design method of cold recycled mixture (CRM) of asphalt pavement have been studied by many tests. The test results show that the performance of cold recycled mixture is dependent mostly on the proportion of old mixture. It proposed evaluation methods and evaluation guideline and standard of EARM on the initial strength, workability, formed strength and water stability through a lot of experiments. And a new design method of EARM has also been proposed. CEARM design method has been studied. Construction technics of CRM has been probed into.It also analyzed the technique property, economical and social results of cold recycled mixture of asphalt pavement.