Estimating the hotmix asphalt air voids from ground penetrating radar

被引：29
作者：
Chen, Dar-Hao [1 ,2 ]
Hong, Feng [2 ]
Zhou, Wujun [3 ]
Ying, Peng [1 ]
机构：
[1] Cent South Univ Forestry & Technol, Changsha, Hunan, Peoples R China
[2] Texas Dept Transportat, Austin, TX 78731 USA
[3] Huazhong Univ Sci & Technol, Sch Civil Engn & Mech, Wuhan 430074, Hubei, Peoples R China
来源：
NDT & E INTERNATIONAL | 2014年 / 68卷
关键词：
Air void; Dielectric; Electromagnetic wave; GPR;
D O I：
10.1016/j.ndteint.2014.08.008
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Traditionally, in-place air voids are obtained based on field cores. Coring is a destructive and time-consuming process. This study presents a high speed Non-Destructive Testing (NDT) technique with Ground Penetrating Radar (GPR) to characterize the in-place air voids. A total of 92 cores were retrieved from three field projects to establish relationship between the air voids and the measured dielectric by GPR. A statistical model was developed to express the air void value as a function of dielectric and other variables. Contour air void maps could also be produced for the entire pavement sections. The results from the underlying studies have been used as the basis for the repair strategy selections. (C) 2014 Elsevier Ltd. All rights reserved.
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页码：120 / 127
页数：8
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