自然老化对SBS改性沥青多孔路面的影响  

Effect of in-field aging on SBS modified asphalt porous pavement

作　　者：段国华 孙杰[2,3] DUAN Guohua;SUN Jie(Haixia(Fujian)Transportation Engineering Design Co.,Ltd.,FuJian FuZhou 350004 China;Jinan Urban Construction Group Co.,Ltd.,Shandong Jinan 250031 China;School of Traffic and Transportation Engineering,Changsha University of Science&Technology,Hunan Changsha 410114 China)

机构地区：[1]海峡(福建)交通工程设计有限公司,福建福州350004 [2]济南城建集团有限公司,山东济南250031 [3]长沙理工大学交通运输工程学院,湖南长沙410114

出　　处：《山东交通科技》2023年第4期53-55,共3页

摘　　要：将服役5 a和10 a的高速公路多孔路面段进行现场钻芯,并从芯样的不同层中回收改性沥青,对回收改性沥青的化学特性和流变特性进行研究评估。红外数据表明顶部的沥青更容易自然老化。流变特性分析表明,即使经过了5~10 a的老化过程,高级改性沥青依然能够保持良好的性能。Some porous pavement sections of motorways that had been in operation for 5 years and 10 years were core drilled in situ and modified bitumen was recovered from the different layers of the core samples.The chemical and rheological properties of the modified bitumen recovered from the different layers were studied and evaluated.The infra-red data showed that the porous bitumen in the top layer was more easily exposed to natural ageing.The rheological analysis showed that the advanced modified bitumen maintained good performance even after 5 to 10 years of outdoor ageing.

关 键 词：SBS改性沥青 老化性能 多孔路面 自然老化 

分 类 号：U414[交通运输工程—道路与铁道工程]