Cold recycling technology is a process that uses cold recycling machinery to continuously complete milling and crushing at room temperature, including the old pavement structural layer including surface layer and part of base layer, adding recycled materials, mixing, paving, rolling and other operation processes, so as to re form the structural layer with certain bearing capacity.
The cold recycling technology of asphalt pavement greatly strengthens the new overlay or recycling methods, extends the quality of the pavement and extends the service life of the road.
沥青路面冷在生技术与传统的沥青路面维修方式相比，能够节约大量的沥青、砂石等原材料，节省工 程投资，同时有利于废料处理、保护环境，因而具有显着的经济效益和社会效益。随着人们对环保、 社会效益的关注及技术的进步，沥青路面冷再生技术越来越受到人们的重视。
Compared with the traditional maintenance methods of asphalt pavement, the cold in life technology of asphalt pavement can save a lot of asphalt, gravel and other raw materials, save engineering investment, and is conducive to waste treatment and environmental protection. Therefore, it has significant economic and social benefits. With people's attention to environmental protection, social benefits and technological progress, the cold recycling technology of asphalt pavement has attracted more and more attention.
国外对沥青路面再生使用研讨，早期是美国从1915年开始的，到上世纪八十年代底美国再生沥青 混合料的用量几乎为悉数路用沥青混合料的一半，并且在再生剂开发、再生混合料设计、施工设备等 方面的研讨也日趋深化。在美国沥青路面的再生使用已是常规实践。一般来说，使用15%~25%的回收路面资料(RAP)的沥青混合料性能都很好。
The research on the recycling of asphalt pavement abroad began in the United States in 1915. By the end of 1980s, the amount of recycled asphalt mixture in the United States was almost half of all road asphalt mixtures, and the research on the development of recycling agent, the design of recycled mixture and construction equipment was deepened day by day. The recycling of asphalt pavement is a common practice in the United States. Generally speaking, the performance of asphalt mixture using 15% ~ 25% recycled pavement data (RAP) is very good.