AN INSTRUMENT FOR DETECTING DELAMINATION IN CONCRETE BRIDGE DECKS
ALTHOUGH MANY FACTORS ARE REQUIRED TO CHARACTERIZE THE EXTENT OF DETERIORATION IN A BRIDGE DECK, THERE ARE TWO FACTORS THAT CAN BE CONSIDERED OF PARAMOUNT IMPORTANCE: DELAMINATION (A SEPARATION OF THE ORIGINAL SLAB INTO TWO OR MORE APPROXIMATELY HORIZONTAL LAYERS) AND POOR QUALITY CONCRETE. THESE TWO FACTORS WERE SINGLED OUT BECAUSE IT WAS FELT THAT MOST STRUCTURAL DAMAGE TO DETERIORATING BRIDGE DECKS RESULTED FROM ONE OR THE OTHER OR BOTH OF THESE DEFECTS. OTHER CONSIDERATIONS IN THE SELECTION OF THESE FACTORS ARE THAT DAMAGE TO STRUCTURES CAUSED BY THEM IS OFTEN NOT VISIBLE UNTIL SIGNIFICANT DETERIORATION IS PRESENT AND, ALSO, THAT THE KNOWN TECHNIQUES FOR THEIR DETECTION ARE SLOW AND TEDIOUS. THUS, THE MAJOR EMPHASIS OF THIS RESEARCH HAS BEEN DIRECTED TOWARD METHODS FOR DETECTING DELAMINATION AND ALSO DETECTING POOR QUALITY CONCRETE. THIS REPORT DESCRIBES AN INSTRUMENT THAT HAS BEEN DEVELOPED SPECIFICALLY TO DETECT DELAMINATION. IT ALSO INCLUDES AN EVALUATION OF THE DEVICE, ACCOMPLISHED BY MEASURING SPECIALLY CONSTRUCTED TEST SLABS AND NUMEROUS IN-SERVICE BRIDGES. ALL EVALUATION TESTS THAT HAVE BEEN CONDUCTED INDICATE THAT THE INSTRUMENT SATISFACTORILY DETECTS DELAMINATION IN BRIDGE DECKS AND THAT IT PROVIDES A RAPID AND PRACTICAL TOOL FOR ROUTINE USE IN BRIDGE CONDITION SURVEYS.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309021839
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Supplemental Notes:
- Publication of this paper sponsored by Committee on Structures Maintenance. 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.
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Authors:
- Moore, William M
- Swift, Gilbert
- Milberger, Lionel J
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Conference:
- 52nd Annual Meeting of the Highway Research Board
- Location: Washington District of Columbia, United States
- Date: 1973-1-22 to 1973-1-26
- Publication Date: 1973
Media Info
- Media Type: Digital/other
- Features: Figures; References;
- Pagination: pp 44-52
- Monograph Title: Highway and bridge maintenance: operations, costs, and modeling
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Serial:
- Highway Research Record
- Issue Number: 451
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Bridge decks; Concrete; Delamination; Detectors; Determinants (Mathematics); Quality control
- Uncontrolled Terms: Determinants; Quality
- Old TRIS Terms: Detecting devices
- Subject Areas: Highways; Maintenance and Preservation;
Filing Info
- Accession Number: 00219166
- Record Type: Publication
- ISBN: 0309021839
- Files: TRIS, TRB
- Created Date: Jan 31 1974 12:00AM