Application Of Cold Recycling Technology Of Waste Asphalt Pavement In Road Maintenance

In recent years, with the increase of China's rapid economic development and infrastructure construction, highway construction by leaps and bounds. The increasing urgency of the supply of material resources for the construction of the highway, In addition, people gradually enhance the awareness of environmental protection, making the road waste recycling technology has increasingly attracted the attention of highway construction decision makers.The cold recycling technology of asphalt pavement can save resources, reduce the cost of project and protect the ecological environment by reusing the asphalt mixture. Emulsified asphalt plant mix cold recycling is will be recycled asphalt pavement material(RAP) to the mixing factory(field station), by crushing, screening, to a certain proportion and Xinji material, emulsified asphalt, active filler(cement, lime, etc.), water for mixing at room temperature, room temperature shop built form layer of pavement structure of asphalt pavement recycling technology. Emulsified asphalt plant mix cold recycling, in essence, is the centralized treatment and processing of waste asphalt mixture. Because of the cold milling operation on the asphalt pavement is still the important way of pavement maintenance, require a large amount of waste asphalt mixture recycling. Relying on t Miyun MiSan road repair works,In order to implement the " Human traffic, science and technology traffic, green traffic" concept, Miyun Branch of Road Administration of Beijing Municipal Commission of Transport in the overhaul engineering of MiSan road promotes the use of the Cold recycling technology. Based on the existing research results, this paper studies the design method of cold recycling of old asphalt pavement, The old pavement materials for cold recycling plant, recycling layer is mainly used for the following layer of the overhaul project. Through to plant mix cold recycling of asphalt concrete mix design, material properties, construction technology, as well as the way after the completion of the efficiency index and research, summed up the factory mix cold recycling of asphalt concrete technical performance, construction process and quality control method. Analysis plant mix cold recycling of asphalt concrete characteristics. According to a large number of experiments and on-site construction, the quality inspection standards and related construction technology of cold recycling factory are summarized, which provide reference for the future development of the technology in highway construction.