基于芯样数据挖掘的沥青路面高温性能发展趋势评价  

Evaluation on Development Trend of Asphalt Pavement High temperature Performance Based on Core Sample Data Mining

作　　者：纪晨 凌高祥 赵子力 沈浩 经叶松 JI Chen;LING Gaoxiang;ZHAO Zili;SHEN Hao;JING Yesong(Nanjing Traffic Construction Management Group Co.,Ltd,Nanjing 211505,China;College of Transportation Engineering,Southeast University,Nanjing 211189,China)

机构地区：[1]南京交通建设管理集团有限公司,江苏南京211505 [2]东南大学交通学院,江苏南京211189

出　　处：《城市道桥与防洪》2025年第1期221-224,共4页Urban Roads Bridges & Flood Control

摘　　要：采用局部多序列动态蠕变试验方法,对高速公路路面连续5 a的现场芯样进行试验,研究其高温性能的发展趋势。结果表明:路面芯样不同层位的高温性能变异系数均超过20%;整体结构和上面层的高温性能均随着服役时间的增长而衰减显著,在设计年限15 a内衰减率低于20%,而超过设计年限后衰减率增至50%以上;不同层位与整体结构的高温性能相比,上面层更弱,中面层最为接近,而下面层更优。The local multi-sequence dynamic creep test method is used to test the field core samples of expressway pavement for 5 consecutive years and analyze the development trend of the high-temperature performances.The results show that the variation coefficients of high-temperature performance of pavement core samples at different layers all exceed 20%.The high-temperature performances of the overall structure and the upper layer decay obviously with the increase of service time.The decaying rate is lower than 20%within 15 years of design period,and the decaying rate will increase over 50%after the design period.By comparing the high-temperature performances of the different layers and the overall structure,the upper layer is weaker,the middle layer is the closest and the lower layer is more optimal.

关 键 词：高温性能 路面芯样 局部多序列动态蠕变试验 发展趋势 

分 类 号：U416.0[交通运输工程—道路与铁道工程]