再生混凝土集料用于沥青混合料研究进展

Review of the Applications of Recycled Concrete Aggregate for Asphalt Mixture

再生混凝土集料是废弃混凝土经过分拣、破碎、筛分而获得的一种再生材料。实现再生混凝土集料在沥青混合料中的资源化利用,具有积极的环境和经济效益。综述了近十年来再生混凝土集料在沥青混合料中的应用研究成果,明晰了再生混凝土集料的物理力学性质,总结了再生混凝土集料对沥青混合料路用性能的影响,分析了多种再生混凝土集料预处理技术原理和效果,提出了再生混凝土集料用于沥青混合料亟待解决的关键技术问题。

As a recycled material, recycled concrete aggregate （RCA） is produced from waste concrete through sorting, crushing and screening. The applications of RCA for asphalt mixture have a positive effect on environment and economy. This paper summarize the achievements that the applications of RCA for asphalt mixture in the last decade, clear the physical and mechanical properties of recycled concrete aggregate, sum- marizes the recycled concrete aggregate impact on pavement performance, analyzed a variety of pretreatment technology principle and effect of recycled concrete aggregate. Then several pretreatments and the key technol- ogy problems of RCA applied in asphalt mixture are ; also analyzed.