OPTIMIZING INFRARED DETECTION FOR BRIDGE DECK DETERIORATION

Infrared thermography is used in non-contact, non-destructive testing of bridge decks for deterioration. The thermographic images, in mapping the ambient temperature levels of the surveyed deck, identify areas of relative heat concentration that correlate well with subsurface delaminations in the deck. While the system is capable of mapping such deterioration in exposed or asphalt covered decks, operational limitations due to weather conditions in the province inhibit its year-round use. This report describes research studies which were undertaken to: 1) develop a theoretical heat transfer model for different types of bridge decks, 2) assess the validity of the theoretical model by collecting field data and performing correlation tests, and 3) provide guidelines for the application of the infrared imaging system relative to the ambient conditions at test sites. (Author/TRRL)

• Corporate Authors:

  Ontario Ministry of Transportation & Communic, Can

  1201 Wilson Avenue
  Downsview, Ontario M3M 1J8,   Canada 
• Authors:
  • Masliwec, T
• Publication Date: 1990-4

Language

• English

Media Info

• Features: References;
• Pagination: 60 p.

Subject/Index Terms

• TRT Terms: Bridge decks; Bridges; Deterioration; Infrared imagery; Infrared radiation; Maintenance; Measurement; Recording; Temperature; Thermal analysis
• Uncontrolled Terms: Bridge maintenance
• ITRD Terms: 3482: Bridge deck; 5255: Deterioration; 6797: Infrared; 6136: Measurement; 6969: Recording; 6722: Temperature; 7152: Thermal analysis; 2545: Weather
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 00609269
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: ME-88-10
• Files: ITRD, TRIS
• Created Date: Jun 30 1991 12:00AM