Attenuation-based methodology for condition assessment of concrete bridge decks using GPR

Kien Dinh, Nenad Gucunski, Jinyoung Kim, Trung H. Duong, Hung M. La

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

7 Scopus citations

Abstract

Reflection amplitude at top rebar layer has been used as a main criterion for evaluating attenuation of ground-penetrating radar (GPR) data from concrete bridge decks. However, a recent study has pointed out the limitation of this practice. Motivated by that same research, the current paper presents a robust method for performing GPR attenuation analysis. Also based on correlation between A-scans, however, instead of baseline data, semi-simulated waveforms are used in this approach. With only one reflection representing direct coupling, these waveforms mimic A-scans collected from completely damaged location. The output obtained is then plotted in form of a contour map of correlation coefficient in which higher value indicates more deteriorated concrete. As a validation, the method was implemented for two bare concrete bridge decks. The result indicates that while the maps provided by other technologies and GPR are geometrically correlated, in comparison with conventional amplitude analysis, the proposed model provides better vision on overall deterioration of bridge decks.

Original languageEnglish (US)
Title of host publication32nd International Symposium on Automation and Robotics in Construction and Mining
Subtitle of host publicationConnected to the Future, Proceedings
PublisherInternational Association for Automation and Robotics in Construction I.A.A.R.C)
ISBN (Electronic)9789517585972
DOIs
StatePublished - 2015
Event32nd International Symposium on Automation and Robotics in Construction and Mining: Connected to the Future, ISARC 2015 - Oulu, Finland
Duration: Jun 15 2015Jun 18 2015

Publication series

Name32nd International Symposium on Automation and Robotics in Construction and Mining: Connected to the Future, Proceedings

Other

Other32nd International Symposium on Automation and Robotics in Construction and Mining: Connected to the Future, ISARC 2015
Country/TerritoryFinland
CityOulu
Period6/15/156/18/15

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Artificial Intelligence
  • Civil and Structural Engineering
  • Hardware and Architecture

Keywords

  • Bridge Inspection
  • Concrete bridge decks
  • Ground penetrating radar (GPR)
  • Non-destructive evaluation (NDE)

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