再生集料及再生混凝土界面过渡区研究进展

Progress on Recycled Concrete Aggregate and Interfacial Transition Zone of Recycled Concrete

再生集料及界面过渡区的性质对再生混凝土性能有重要影响。基于国内外再生混凝土的研究现状,分析了再生集料性质与界面过渡区的微观结构对再生混凝土物理力学性能的影响,总结了再生混凝土性能的改善措施。根据再生混凝土现阶段存在问题,提出今后应注重再生集料加工工艺优化、再生集料分级评估、界面过渡区微观结构及再生混凝土耐久性等方面的研究。

The properties of Recycled Concrete Aggregate（ RCA） and Interfacial Transition Zone（ ITZ）have significant influence of the performance of recycled concrete. Based on the current domestic and foreign research of recycled concrete,the influence on the physical and mechanical performance of recycled concrete by concerning the properties of RCA and the microstructure of ITZ was analyzed,the measures to improve the performance of recycled concrete were summarized. According to the existing problems of recycled concrete, the necessity for paying attention to the optimization of processing technology of RCA,the grade evaluation of RCA,the microstructure of ITZ and the durability of recycled concrete in the future research were represented.