基于路面雷达测定沥青混合料压实度及空隙率研究综述  

Review of the research of using ground penetrating radar to measure compactness and volume of air voids of asphalt mixture

作　　者：凌天清 崔立龙[2] 陈巧巧 牟存玉 LING Tian-qing;CUI Li-long;CHEN Qiao-qiao;MOU Cun-yu(College of Architecture and Urban Planning,Chongqing Jiaotong University,Chongqing 400074,China;School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;School of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学建筑与城市规划学院,重庆400074 [2]重庆交通大学土木工程学院,重庆400074 [3]重庆交通大学材料科学与工程学院,重庆400074

出　　处：《地球物理学进展》2019年第6期2467-2480,共14页Progress in Geophysics

基　　金：交通运输部建设科技项目(2014318J15070);重庆市技术创新与应用发展专项面上项目(cstc2019jscx-msxmX0296);重庆市研究生教育创新基金项目联合资助(2018B0102)联合资助

摘　　要：为了探索路面雷达在沥青路面压实度及空隙率检测领域的适用性与发展方向,在简要介绍路面雷达检测原理的基础上,结合国内外研究成果,对路面雷达检测沥青路面压实度及空隙率的研究进展进行了系统归纳与总结,针对路面雷达在干燥及含水两种沥青混合料的压实度和空隙率检测应用进展,沥青混合料复合介电模型对比分析三个方面进行了详细阐述.结果表明:沥青混合料介电常数受雷达频率与温度影响,现有复合介电模型对沥青混合料的压实度及空隙率计算具有一定的指导意义,但模型的精确性与适用范围有待提高;对于含水沥青混合料,现有模型尚无法解释部分介电常数变化规律;多层沥青混合料结构复合介电模型算法亟待建立与完善.将油石比作为未知变量,考虑介电常数与毛体积相对密度的非线性关系,同时得到沥青路面油石比与毛体积相对密度,这一方法值得研究.总体而言,基于路面雷达的沥青路面压实度及空隙率检测技术处于初步发展阶段,在沥青路面压实实时监控方面具有良好的发展空间及应用前景.In order to explore the applicability and development direction of Ground Penetrating Radar(GPR)in the field of asphalt pavement compactness and volume of air voids measurement,this paper systematically summarizes the research progress of Ground Penetrating Radar in detecting asphalt pavement compactness and volume of air voids measurement on the basis of introducing the principle of Ground Penetrating Radar detection and combining with the research results at domestic and abroad.The author demonstrates advances of Ground Penetrating Radar in detecting compactness and volume of air voids of dry and water-bearing asphalt mixture,as well as comparative analysis of asphalt mixture composite dielectric model in detail.The results showed that the dielectric constant of asphalt mixture was affected by radar frequency and temperature.The existing composite dielectric model has certain guiding significance for the calculation of compactness and volume of air voids of asphalt mixture,however,the accuracy and applicability of the model need to be improved.The algorithm of composite dielectric model of multilayer asphalt mixture structure is needs to be established and perfected.For the water-bearing asphalt mixture,the present model is not incapable to explain partial change regulations of dielectric constant.Considering the asphalt-aggregate ratio as an unknown variable and the non-linear relationship between the dielectric constant and the bulk specific density,the method to obtain the asphalt-aggregate ratio and the bulk specific density of the asphalt pavement is worth studying.Overall,detection of compactness and volume of air voids of asphalt pavement based on Ground Penetrating Radar is in the initial stage of its development,and shows great potential of development and application prospects in the field of real-time monitoring of asphalt pavement compaction.

关 键 词：道路工程 沥青混合料 路面雷达 介电常数 复合介电模型 压实度 空隙率 

分 类 号：P631[天文地球—地质矿产勘探]