水反应型全比例冷再生沥青混合料的路用性能研究  

Research on Pavement Performance of Water-reactive Full-proportion Cold Recycled Asphalt Mixtures

作　　者：胡成生[1] 蔡祥 许龙 Hu Chengsheng;Cai Xiang;Xu Long(Guangzhou Municipal Engineering Maintenance Department Co.,Ltd.,Guangzhou 510000,China;Guangzhou Weixin Material Technology Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]广州市市政工程维修处有限公司,广东广州510000 [2]广州市市维新材料科技有限公司,广东广州510000

出　　处：《市政技术》2024年第7期226-231,共6页Journal of Municipal Technology

摘　　要：针对常规热拌再生沥青混合料应用时工序繁杂的问题,采用再生AC-20C矿料级配制备了水反应型全比例冷再生沥青混合料、热拌再生沥青混合料和泡沫沥青再生混合料,并对比了3种再生沥青混合料的性能。研究结果表明:水反应型全比例冷再生沥青混合料的性能优于泡沫沥青再生混合料,接近热拌再生沥青混合料。水反应型全比例冷再生沥青混合料7 d的马歇尔稳定度和动稳定度分别可达9.52 kN、4 228次/mm,其水稳定性能、低温抗裂性能和疲劳耐久性能均满足现行施工技术规范对热拌沥青混凝土的要求。随着时间的推移,反应型稀释剂与固化剂的交联络合反应会持续进行,水反应型全比例冷再生沥青混合料的物理力学性能也会持续增强。Addressing the complex process issues in the application of conventional hot-mixed recycled asphalt mixtures,water-reactive full-proportion cold recycled asphalt mixtures,hot-mixed recycled asphalt mixtures and foamed asphalt recycled mixtures were prepared by recycled AC-20C mineral gradation.The performance of these three types of recycled asphalt mixtures were then compared.The research results showed that the performance of water-reactive full-proportion cold recycled asphalt mixtures is superior to that of foamed ones and close to that of hot-mixed ones,whose Marshall stability and dynamic stability can reach 9.52 kN and 4228 times/mm at 7 days,respectively.Its water stability,low-temperature crack resistance,and fatigue durability also meet the requirements of current construction technical specifications for hot-mixed asphalt concrete.With time goes on,the crosslinking chelation reaction between the reactive diluent and curing agent continues,and the physical mechanical properties of water-reactive full-proportion cold recycled asphalt mixtures continue to increase as well.

关 键 词：水反应型 全比例 冷再生沥青混合料 路用性能 交联络合反应 

分 类 号：U416.217[交通运输工程—道路与铁道工程]