PRINCIPLES OF THERMOGRAPHY AND RADAR FOR BRIDGE DECK ASSESSMENT

A research program is reported that involved extensive field testing of decks with infrared and radar, and verification of the infrared/radar predictions during actual maintenance and repair of the tested decks. The first phase of the study developed a physical understanding of the radar and infrared techniques as appliled to bridge decks. This paper describes the first steps in the development of theroretical models which provide the understanding. Successful simple physical models were developed to predict the response of thermography and radar as applied to the useful tools for predicting and interpreting signal responses to a variety of conditions. Parametric studies were made using these models. Infrared thermographic studies show that this technique is capable of detecting delamination, but is limited in capability when the asphalt cover is large, the delamination openings are small, and the cracks are deep.

Availability:
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Corporate Authors:
American Society of Civil Engineers

345 East 47th Street
New York, NY United States 10017-2398
Authors:
- Maser, K R
- Roddis, WMK
Publication Date: 1990-9

Media Info

Features: Appendices; Figures; References; Tables;
Pagination: p. 583-601
Serial:
- Journal of Transportation Engineering
- Volume: 116
- Issue Number: 5
- Publisher: American Society of Civil Engineers
- ISSN: 0733-947X
- Serial URL: https://ascelibrary.org/journal/jtepbs

Subject/Index Terms

TRT Terms: Bridge decks; Bridges; Delamination; Infrared radiation; Maintenance; Radar; Thermographs
Uncontrolled Terms: Bridge maintenance
Old TRIS Terms: Radar applications
Subject Areas: Bridges and other structures; Design; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls;

Filing Info

Accession Number: 00600876
Record Type: Publication
Files: TRIS, ATRI
Created Date: Oct 31 1990 12:00AM