CONDITION EVALUATION OF CONCRETE BRIDGES RELATIVE TO REINFORCEMENT CORROSION. VOLUME 3: METHOD FOR EVALUATING THE CONDITON OF ASPHALT-COVERED DECKS

This volume describes the development of a technique for nondestructively determining the presence of delaminations at the top and bottom reinforcement levels. The technique employs the use of short pulse, ground-penetrating radar. Extensive radio frequency modeling of the bridge deck scenario was carried out in order to establish theoretical limits of paramters and capabilites. The best discriminant for delamination at the top renforcement level is signal attenuation, and at the bottom reinforcement level, increase in the amplitude of the bottom rebar signal. Advanced radar data acquistion and signal processing equipment and software were also developed to provide a useable system at the practical level.

• Record URL:
  • http://onlinepubs.trb.org/onlinepubs/shrp/SHRP-S-325.pdf
• 
• Supplemental Notes:
  • 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
• Corporate Authors:

  Strategic Highway Research Program

  National Research Council, 2101 Constitution Avenue, NW
  Washington, DC  United States  20418
• Authors:
  • Algongi, A J
  • Clemena, G G
  • Cady, P D
• Publication Date: 1992-9

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 84 p.

Subject/Index Terms

• TRT Terms: Corrosion; Delamination; Material reinforcement; Mathematical models; Monitoring; Radar; Reinforced concrete bridges; Software; Steel
• Identifier Terms: Strategic Highway Research Program
• Uncontrolled Terms: Condition monitoring; Models
• Old TRIS Terms: Steel renforcement
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00624361
• Record Type: Publication
• Report/Paper Numbers: SHRP-S-325
• Files: TRIS, TRB
• Created Date: Oct 20 1993 12:00AM