不同类型乳化沥青厂拌冷再生混合料性能对比研究  

Comparative Study on the Performance of Different Types of Emulsified Asphalt Plant Mixed Cold Recycled Mixtures

作　　者：张毅 张凌波 张晓华 何平芝 张蓉 ZHANG Yi;ZHANG Lingbo;ZHANG Xiaohua;HE Pingzhi;ZHANG Rong(Sichuan Highway Planning,Survey and Design Research Institute Co.,Ltd.,Chengdu 610041;Research and Development Center of Transport Industry of Technology,Materials and Equipment of Highway Construction and Maintenance,Chengdu 611130;Sichuan Engineering Laboratory of Pavement Structural,Materials and Maintenance,Chengdu 611130)

机构地区：[1]四川省公路规划勘察设计研究院有限公司,成都610041 [2]公路建设与养护技术、材料及装备行业研发中心,成都611130 [3]四川省路面结构材料及养护工程实验室,成都611130

出　　处：《石油沥青》2025年第1期18-24,共7页Petroleum Asphalt

基　　金：四川省交通运输科技项目,项目编号2018-A-07。

摘　　要：为了研究不同类型的乳化沥青对厂拌冷再生混合料性能的影响,在室内采用木质素胺类乳化剂制备乳化沥青A、并采用木质素胺类与酰胺类复配乳化剂制备复配乳化沥青B,分别将两种乳化沥青在相同的级配条件下成型厂拌冷再生混合料试件,并采用扫刷磨耗、低温弯曲、四点弯曲疲劳以及动态模量试验对两种乳化沥青冷再生混合料的综合性能进行对比分析。研究表明:乳化沥青类型对冷再生混合料的早期强度、低温弯曲以及疲劳性能有较大影响,而对动态模量和相位角的影响较小,复配乳化沥青B冷再生混合料的早期强度以及低应变水平下的疲劳寿命要明显优于乳化沥青A冷再生混合料;低温弯曲试验结果表明,两种乳化沥青冷再生混合料的极限破坏应变比较接近,但复配乳化沥青B冷再生混合料的弯曲应变能要明显高于乳化沥青A冷再生混合料。In order to study the effects of different types of emulsified asphalt on the performance of factory mixed cold recycled mixtures,emulsified asphalt A was prepared using lignin amine emulsifiers indoors,and composite emulsified asphalt B was prepared using lignin amine and amide composite emulsifiers.Two types of emulsified asphalt were formed into factory mixed cold recycled mixture specimens under the same grading conditions,and the comprehensive performance of the two emulsified asphalt cold recycled mixtures was compared and analyzed using sweep abrasion,low-temperature bending,four point bending fatigue,and dynamic modulus tests.Research has shown that the type of emulsified asphalt has a significant impact on the early strength,low-temperature bending,and fatigue performance of cold recycled mixtures,while the impact on dynamic modulus and phase angle is relatively small.The early strength and fatigue life of emulsified asphalt B cold recycled mixture are significantly better than those of emulsified asphalt A cold recycled mixture at low strain levels;The results of the low-temperature bending test show that the ultimate failure strain of the two emulsified asphalt cold recycled mixtures is relatively close,but the bending strain energy of the composite emulsified asphalt B cold recycled mixture is significantly higher than that of emulsified asphalt A cold recycled mixture.

关 键 词：乳化剂 乳化沥青类型 冷再生 低温弯曲 疲劳性能 动态模量 

分 类 号：U414[交通运输工程—道路与铁道工程]