Use of GPR for thickness measurement and quality control of flexible pavements

Imad L. Al-Qadi, Samer Lahouar

Research output: Contribution to journalConference articlepeer-review


The performance of ground penetrating radar (GPR) in estimating the layer thicknesses of flexible pavements was evaluated. The results were based on field data collected from the Virginia Smart Road's pavement test facility, from a newly built section of a state highway (Route 288, VA), and from a section of an in-service interstate highway (I-81). Based on the collected data, current GPR analysis approach failed to detect layer interfaces in some circumstances because of physical limitations (such as low dielectric constant contrast between the layers combined with relatively high material loss or the presence of thin layers, compared to the GPR resolution, within the surveyed pavement system). However, GPR was feasible nondestructive tool for estimating the layer thicknesses of hot-mix-asphalt layers, provided that the appropriate data analysis technique for the type of surveyed pavement is used. The type of GPR system and the suitable data analysis technique depended on the application and the level of accuracy needed in the project. This is an abstract of a paper presented at the Association of Asphalt Paving Technologists 2004 Technology Sessions (Baton Rouge, LA 3/10-18/2004).

Original languageEnglish (US)
Pages (from-to)501-528
Number of pages28
JournalAsphalt Paving Technology, AAPT
StatePublished - 2004
Externally publishedYes
EventAssociation of Asphalt Paving Technologists - Proceedings of the Technology Sessions, AAPT 2004 - Baton Rouge, LA, United States
Duration: Mar 8 2004Mar 10 2004


  • Flexible Pavement
  • GPR
  • Thickness Measurements

ASJC Scopus subject areas

  • Civil and Structural Engineering


Dive into the research topics of 'Use of GPR for thickness measurement and quality control of flexible pavements'. Together they form a unique fingerprint.

Cite this