湿热地区高速公路沥青混合料功能性设计——以茂湛高速为例  

Functional Design of Highway Asphalt Mixture in Hot and Humid Areas:A Case Study of Maozhan Expressway

作　　者：李维杰 李伟雄 陈搏 揭继兴 LI Weijie;LI Weixiong;CHEN Bo;JIE Jixing(Guangdong Communication Planning and Design Institute Group Co.Ltd.,Guangzhou 510440,China;Xiaoning Institute of Roadway Engineering,Guangzhou 510641,China)

机构地区：[1]广东省交通规划设计研究院集团股份有限公司,广州510440 [2]广州肖宁道路工程技术研究事务所有限公司,广州510641

出　　处：《科技和产业》2024年第22期318-322,共5页Science Technology and Industry

摘　　要：为指导湿热地区沥青混合料设计,依托茂湛高速,分析项目的气候条件,梳理沥青路面功能需求,最后推荐适用高湿热地区的混合料设计方案。研究结果表明,优化设计后的骨架型AC-20与SMA-13沥青混合料,70℃动稳定度可提升40%以上;为提高沥青路面水稳定性,推荐了适宜的目标空隙率和施工配比方案;室内加速磨光试验表明,SMA-13混合料的抗滑耐久性能优于AC-16混合料;50#硬质沥青混合料的动稳定度比70#沥青提升150%,具有更好的适应性与经济性。In order to provide guidance for the design of asphalt mixture in hot and humid areas,based on the Maozhan high-speed project,the climatic conditions of the project were analyzed,the functional requirements of asphalt pavement were sorted out,and the mixture design scheme for high hot and humid areas was recommended.The results show that after optimized design,the dynamic stability of skeleton-type AC-20 and SMA-13 asphalt mixture can be increased by more than 40%at 70℃.In order to improve the water stability of asphalt pavement,the appropriate target voidage and construction ratio scheme are recommended.The indoor accelerated polishing test shows that the anti-skid durability of SMA-13 is better than that of AC-16.The dynamic stability of the mixture using 50#hard asphalt is 150%higher than that of 70#asphalt,which has better adaptability and economy.

关 键 词：沥青路面 湿热气候 功能性 骨架密实型 硬质沥青 

分 类 号：U416.2[交通运输工程—道路与铁道工程]