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Sensors 2016, 16(12), 2067; doi:10.3390/s16122067

Rapid Detection Methods for Asphalt Pavement Thicknesses and Defects by a Vehicle-Mounted Ground Penetrating Radar (GPR) System

1
Institute of Electronics, Chinese Academy of Science, Beijing 100190, China
2
University of Chinese Academy of Science, Beijing 100149, China
3
Beijing Road Engineering Quality Supervision Station, Beijing 100076, China
*
Author to whom correspondence should be addressed.
Academic Editor: Changshan Wu
Received: 19 September 2016 / Revised: 26 November 2016 / Accepted: 29 November 2016 / Published: 6 December 2016
View Full-Text   |   Download PDF [13780 KB, uploaded 6 December 2016]   |  

Abstract

The thickness estimation of the top surface layer and surface layer, as well as the detection of road defects, are of great importance to the quality conditions of asphalt pavement. Although ground penetrating radar (GPR) methods have been widely used in non-destructive detection of pavements, the thickness estimation of the thin top surface layer is still a difficult problem due to the limitations of GPR resolution and the similar permittivity of asphalt sub-layers. Besides, the detection of some road defects, including inadequate compaction and delamination at interfaces, require further practical study. In this paper, a newly-developed vehicle-mounted GPR detection system is introduced. We used a horizontal high-pass filter and a modified layer localization method to extract the underground layers. Besides, according to lab experiments and simulation analysis, we proposed theoretical methods for detecting the degree of compaction and delamination at the interface, respectively. Moreover, a field test was carried out and the estimated results showed a satisfactory accuracy of the system and methods. View Full-Text
Keywords: vehicle-mounted GPR system; asphalt layer thickness; top surface asphalt layer; layer localization method; degree of compaction; delamination at interfaces vehicle-mounted GPR system; asphalt layer thickness; top surface asphalt layer; layer localization method; degree of compaction; delamination at interfaces
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Dong, Z.; Ye, S.; Gao, Y.; Fang, G.; Zhang, X.; Xue, Z.; Zhang, T. Rapid Detection Methods for Asphalt Pavement Thicknesses and Defects by a Vehicle-Mounted Ground Penetrating Radar (GPR) System. Sensors 2016, 16, 2067.

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