Flexible pavement quality assurance using ground penetrating radar

Z. Leng, I. Al-Qadi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To produce a high-quality and long-lasting pavement, quality assurance (QA) is critical. For flexible pavements, layer thickness and in-situ density are the two most important characteristics to monitor. This paper presents the successful application of ground penetrating radar (GPR) to nondestructively and continuously measure asphaltic layer thickness and density. Ground penetrating radar surveys were conducted at a five-lane full-scale test site. Each lane is composed of four sections with the same asphaltic mixture but different densities. The GPR signal reflection was used to predict the layer thickness profile. Specific gravity models developed in an earlier study were utilized to predict the asphalt mixture density profile. The GPR-predicted thickness and density were compared to the core-measured values. Results showed that GPR achieved an average relative error of 4.9% in layer thickness measurement without using calibration cores and an average relative error of 2.6% in asphalt mixture bulk specific gravity using one calibration core.

Original languageEnglish (US)
Title of host publicationT and DI Congress 2011
Subtitle of host publicationIntegrated Transportation and Development for a Better Tomorrow - Proceedings of the 1st Congress of the Transportation and Development Institute of ASCE
Pages617-627
Number of pages11
DOIs
StatePublished - May 2 2011
Event1st Congress of the Transportation and Development Institute of ASCE - Chicago, IL, United States
Duration: Mar 13 2011Mar 16 2011

Publication series

NameT and DI Congress 2011: Integrated Transportation and Development for a Better Tomorrow - Proceedings of the 1st Congress of the Transportation and Development Institute of ASCE

Other

Other1st Congress of the Transportation and Development Institute of ASCE
CountryUnited States
CityChicago, IL
Period3/13/113/16/11

Keywords

  • Flexible pavements
  • Quality control
  • Radar

ASJC Scopus subject areas

  • Transportation
  • Geography, Planning and Development

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  • Cite this

    Leng, Z., & Al-Qadi, I. (2011). Flexible pavement quality assurance using ground penetrating radar. In T and DI Congress 2011: Integrated Transportation and Development for a Better Tomorrow - Proceedings of the 1st Congress of the Transportation and Development Institute of ASCE (pp. 617-627). (T and DI Congress 2011: Integrated Transportation and Development for a Better Tomorrow - Proceedings of the 1st Congress of the Transportation and Development Institute of ASCE). https://doi.org/10.1061/41167(398)59