NDLI: Research on dielectric properties of asphalt concrete with GPR

Content Provider	IEEE Xplore Digital Library
Author	Sun Ji-tong Guo Xiu-jun Zhang Xiao-wei
Copyright Year	2012
Description	Author affiliation: Traffic Survey & Design Inst. of Henan, Zhengzhou, China (Zhang Xiao-wei) \|\| Coll. of Environ. Sci. & Eng., Ocean Univ. of China, Qingdao, China (Sun Ji-tong; Guo Xiu-jun)
Abstract	While the thickness of asphalt road surface was detected with Ground penetrating radar, Velocity of GPR wave was a key to calculate thickness well and truly. In order to get a new method to calculate speed, three groups of asphalt concrete samples were made in laboratory, which component and thickness were different. Then their dielectric constants were measured using reflection wave method. Based on these measured data, the dielectric constant model of asphalt concrete and external factors was analyzed. Studies results show that the dielectric constant of asphalt mainly depends on its composition ratio and dielectric properties; it may be indicated by an amended linear model. In addition, the thickness of test block and changes of antenna frequency also affect the dielectric constant value we should correct it during the test. Case study showed that calculating thickness with the new formula could greatly improve the accuracy of detected pavement thickness.
Starting Page	542
Ending Page	545
File Size	686706
Page Count	4
File Format	PDF
ISBN	9781467326629
e-ISBN	9781467326636
DOI	10.1109/ICGPR.2012.6254923
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-04
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ground penetrating radar asphalt concrete GPR Dielectric model NDT
Content Type	Text
Resource Type	Article

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