基于探地雷达的道路半刚性基层含水率检测  

Water content detection of road semi-rigid base based on ground penetrating radar

作　　者：王伟[1] 郑睿[1] WANG Wei;ZHENG Rui(College of City Construction,Changjiang Institute of Technology,Wuhan 430212,China)

机构地区：[1]长江工程职业技术学院城市建设学院,湖北武汉430212

出　　处：《武汉大学学报（工学版）》2022年第12期1248-1255,共8页Engineering Journal of Wuhan University

摘　　要：为探究含水率与不同道路半刚性基层材料的关系,从而实现检测道路含水率的目的,采用探地雷达技术对不同含水率的半刚性材料进行试验,得到介电常数与含水率之间的函数关系式。通过探地雷达进行实地检测,求出理论含水率。现场钻芯取样结果表明:理论含水率与实测含水率基本一致,函数关系式计算结果可靠,并据此实现道路半刚性材料最优含水量的评定。Dielectric constant is a characterization parameter of dielectric properties of materials. The change of water content will affect the dielectric constant of road structure materials. In order to explore the relationship between water content and semi-rigid base materials of different roads and realize the purpose of road water content detection, the GPR(ground penetrating radar) technology was used to test semi-rigid materials with different water content, and the functional relationship between dielectric constant and water content was obtained. The theoretical water content was calculated by using ground penetrating radar for field detection. The results of field drilling core sampling show that the theoretical water content is basically consistent with the measured water content, which indicates that the calculated results of the function relation are reliable, and the optimal water content of road semi-rigid materials can be evaluated based on the results.

关 键 词：道路半刚性基层 探地雷达 含水率 检测 介电常数 

分 类 号：U416.03[交通运输工程—道路与铁道工程]