氯盐环境下沥青与沥青混合料性能及劣化机理研究进展  

Research Progress on Performance and Deterioration Mechanism of Asphalt and Asphalt Mixture in Chloride Environment

作　　者：褚召阳 郭乃胜 房辰泽 谭忆秋[2] 尤占平 CHU Zhaoyang;GUO Naisheng;FANG Chenze;TAN Yiqiu;YOU Zhanping(College of Transportation Engineering,Dalian Maritime University,Dalian 116026,Liaoning,China;School of Transportation Science and Engineering,Harbin Institute of Technology,Harbin 150090,China;Department of Civil and Environmental Engineering,Michigan Technological University,Houghton MI49931,Michigan,USA)

机构地区：[1]大连海事大学交通运输工程学院,辽宁大连116026 [2]哈尔滨工业大学交通科学与工程学院,哈尔滨150090 [3]密歇根理工大学土木与环境工程系,密歇根霍顿MI49931

出　　处：《材料导报》2023年第15期77-85,共9页Materials Reports

基　　金：国家自然科学基金(51308084);中央高校基本科研业务费专项资金(3132017029);大连海事大学“双一流”建设专项(BSCXXM021);辽宁公路科技创新重点科研项目(201701);大连市科技创新基金项目(2020JJ26SN062)。

摘　　要：针对实际工况下氯盐环境对沥青路面性能影响及劣化机理研究不明晰的问题,本文主要从氯盐环境室内模拟设计、氯盐环境对材料性能的影响及劣化机理三个方面,综述了氯盐环境下沥青与沥青混合料性能及劣化机理的研究现状,并总结了现有研究存在的不足及未来发展方向。当前研究主要通过室内模拟加速试验分析氯盐环境对沥青与沥青混合料性能的劣化进程,但常用的氯盐环境室内模拟方法大多只考虑盐分的影响,这与沥青路面实际服役过程中同时经受着行车荷载、温度等多种因素共同作用的状态不符。此外,不同试验方案所用氯盐类型与浓度、沥青类型、温度及循环方式各有差异,故其试验结果相关性较差。氯盐环境对材料性能影响及其劣化机理的分析主要依据室内试验结果,缺乏借助数值模拟手段开展深入探讨。现有氯盐环境室内模拟试验方法和单一研究手段难以客观描述实际服役中氯盐环境对沥青路面性能的侵蚀破坏及劣化机理。鉴于此,建议进一步优化氯盐环境室内模拟试验方案,并建立数值模拟系统,从氯盐离子在沥青混合料内部的扩散机制、氯盐-沥青/集料间的物理化学反应及侵蚀产物的角度,将室内试验同多物理场数值模拟有机结合,以期实现模拟参数与实际指标的等效转换,更深入探讨实际工况下氯盐环境对不同类型沥青与沥青混合料性能的劣化及其机理。Aiming at the impact of chloride salt environment on asphalt pavement performance and deterioration mechanism under actual working conditions,previous studies conducted on the performance and deterioration mechanism of asphalt and asphalt mixture in chloride salt environment are reviewed in this paper,including the laboratory simulation design of the chloride salt environment,impacts of the chloride salt environment on the material performance and deterioration mechanism aspects,also,the future development direction is suggested.The recent study primarily analyzes the performance deterioration process of asphalt and asphalt mixture in the chlorine salt environment via the laboratory simulation accelerated test.However,commonly used laboratory simulation methods of chloride salt environments only consider the impacts of salt,which is inconsistent with the state where the asphalt pavement is subjected to the combined action of several factors,including vehicle load and temperature during the practical service.Moreover,poor correlations are observed in the test results obtained using different test schemes owing to the divergence in the type and concentration of chloride salt,asphalt type,temperature,and circulation mode.The analysis of the impact of the chloride environment on the material performance and its deterioration mechanism primarily based on the laboratory simulation accelerated test,and lacks of in-depth discussion by means of numerical simulation.These test methods and single research mean of the chloride environment are difficult to objectively analyze the corrosion risk and deterioration mechanism of the chloride environment on the performance of asphalt pavement in-service.Therefore,it is recommended further optimizing the chloride salt environment laboratory simulation test plan and establishing a numerical simulation system,from the view of the diffusion mechanism of chloride salt ions in the asphalt mixture,the physical or chemical reactions and corrosion products between chloride-asphalt/aggregat

关 键 词：氯盐环境 沥青与沥青混合料 服役性能 劣化机理 多场耦合 

分 类 号：U414[交通运输工程—道路与铁道工程]