Asphalt Pavement Compaction Assessment Using Ground Penetrating Radar-Arrays

Kyle Hoegh, Shongtao Dai

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

Abstract

Air void content is a crucial parameter affecting long term pavement performance. Ground penetrating radar (GPR) offers a nondestructive method of determining relative asphalt air void content cheaply, quickly, and over an entire project. Previous implementations of GPR for the determination of air void content, including demonstrations as part of a recent SHRP2 study, were mostly positive, but suggested the need for a testing protocol. To explore various survey methodologies, a large-scale case study was conducted on U.S. HWY 52 in Minnesota using the rolling density meter (RDM), a commercially available device developed specifically for air void analysis in asphalt pavements. The lessons learned from the SHRP2 studies and initial Minnesota pilot projects were used on a full coverage trial implementation. The full coverage trial allowed for determination of the potential of the technology for improved QA/QC and resulted in development of best practice recommendations. This paper illustrates information provided by the full coverage data and outlines recommendations related to survey coverage, data file standardization and organization, verification of location and GPR measurements, and a rigid core collection procedure. The application of these recommendations allow an RDM crew to collect valuable relative compaction data for real time feedback without interfering with paving operations or traffic closures. Additionally, core calibration can be performed after surveying to convert data to air void content and project data analysis can be used to determine the construction practices most crucial to achieving sufficient compaction.

Original languageEnglish (US)
Title of host publicationCongress on Technical Advancement 2017
Subtitle of host publicationConstruction and Forensic Engineering - Papers from Sessions of the 1st Congress on Technical Advancement
EditorsJon E. Zufelt
PublisherAmerican Society of Civil Engineers (ASCE)
Pages118-126
Number of pages9
ISBN (Electronic)9780784481035
DOIs
StatePublished - Jan 1 2017
Externally publishedYes
Event1st Congress on Technical Advancement, CTA 2017: Construction and Forensic Engineering - Duluth, United States
Duration: Sep 10 2017Sep 13 2017

Publication series

NameCongress on Technical Advancement 2017: Construction and Forensic Engineering - Papers from Sessions of the 1st Congress on Technical Advancement

Other

Other1st Congress on Technical Advancement, CTA 2017: Construction and Forensic Engineering
CountryUnited States
CityDuluth
Period9/10/179/13/17

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  • Cite this

    Hoegh, K., & Dai, S. (2017). Asphalt Pavement Compaction Assessment Using Ground Penetrating Radar-Arrays. In J. E. Zufelt (Ed.), Congress on Technical Advancement 2017: Construction and Forensic Engineering - Papers from Sessions of the 1st Congress on Technical Advancement (pp. 118-126). (Congress on Technical Advancement 2017: Construction and Forensic Engineering - Papers from Sessions of the 1st Congress on Technical Advancement). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784481035.011