乳化沥青就地冷再生技术(Cold In-place Recycling,CIR)是以乳化沥青作为再生剂,适当添加水泥、新料等材料,采用专用就地冷再生设备对旧沥青混合料进行再生利用的一项技术,具有节能环保,节约原材料,节省道路养护资金等突出优点,是国外路面的养护、维修和升级的常规方式之一。本文依托122省道句容段2013年大中修工程,介绍了乳化沥青冷再生技术在122省道句容段道路养护维修工程项目中的应用。 Cold In-place Recycling (CIR) is a process in which emulsified asphalt is used as a regenerant and cement, new material and other materials are appropriately added, and the old in-place cold recycling equipment is used to recycle old asphalt mixture It has the prominent advantages of saving energy and protecting the environment, saving raw materials and saving the road maintenance fund. It is one of the conventional ways to maintain, repair and upgrade the pavement abroad. This paper relies on the 122 provincial road Jurong section major training in 2013, introduced the emulsified asphalt cold regeneration technology in the 122 provincial road Jurong Road Maintenance Project.