DETECTION OF DELAMINATION IN BRIDGE DECKS WITH INFRARED THERMOGRAPHY

The use of infrared thermography to define very accurately variations in surface temperatures was evaluated as a means of defining delaminated areas caused by corrosion of reinforcing steel in concrete bridge decks. Differences in the temperatures of the deck surface, shown in various shades or colors on a cathode-ray tube, were photographed to provide a permanent graphic record of the location of the warmer, distressed areas. In a comparative study of infrared thermography and conventional deck evaluation techniques, including the sounding of the surface with a hammer and chain drag and the use of a rolling delamination detector, all were found generally satisfactory in locating severe to medium delaminations. However, the infrared thermography procedure had important advantages in disclosing incipient delaminations, those in which the cracking is confined to the close vicinity of the reinforcing steel, and in providing detailed records of the separated areas. /Author/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1978/664/664v1-023.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=DETECTION+OF+DELAMINATION+IN+BRIDGE+DECKS+WITH+INFRARED+THERMOGRAPHY&author=G.+Clemena&author=W.+McKeel&publication_year=1978
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• Supplemental Notes:
  • This paper appeared in Transportation Research Record No. 664, Bridge Engineering, Volume 1. Proceedings of a conference conducted by the Transportation Research Board, September 25-27, 1978. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Clemena, Gerardo G
  • McKeel Jr, Wallace T
• Conference:
  • Bridge Engineering Conference, 1st, 1978, St Louis, Missouri, USA
  • Location: St Louis Missouri, United States
  • Date: 1978-9-25 to 1978-9-28
• Publication Date: 1978

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 180-182
• Monograph Title: Bridge Engineering. Volume 1
• Serial:
  • Transportation Research Record
  • Issue Number: 664
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Bridge decks; Concrete; Corrosion; Delamination; Detection and identification; Detectors; Fracture mechanics; Infrared radiation; Reinforced concrete pavements; Thermographs
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00183762
• Record Type: Publication
• ISBN: 0309026962
• Files: TRIS, TRB
• Created Date: Dec 3 1978 12:00AM