STATEWIDE BRIDGE DECK SURVEY USING GROUND PENETRATING RADAR

The Arizona Department of Transportation (ADOT) implemented a statewide bridge deck Ground Penetrating Radar (GPR) survey of 134 bridges. The deck component of this inspection was carried out using GPR, coupled with coring, half-cell corrosion potential tests, and chloride sampling. The GPR survey provided the first round of data, producing maps for each deck showing potential areas of concrete deterioration and depth of reinforcement. These maps were then used by field inspection crews to locate the subsequent tests, and to determine sample depths for chloride testing. The GPR field data were collected at normal driving speed without lane closures or interference to traffic. The total data collection effort for the 134 bridge decks, including mobilization throughout the state, consumed 32 field days. Data analysis was carried out at a rate of 15 bridges per week, so that the GPR maps were available for the field crews in time for their work. The project provided ADOT with 100% coverage data on deck condition and depth of rebar on over 1.5 million sq ft (139,350 sq m) of bridge, at considerably less cost than alternative methods.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/1566769493
• Supplemental Notes:
  • This entry in the TRIS database is made from the hardback copy of the conference proceedings, which are also available on CD-ROM.
• Corporate Authors:

  Technomic Publishing Company, Incorporated

  851 New Holland Avenue, Box 3535
  Lancaster, PA  United States  17604
• Authors:
  • Maser, K
  • Bernhardt, M
• Conference:
  • Structural Materials Technology IV - An NDT Conference
  • Location: Atlantic City, New Jersey
  • Date: 2000-2-28 to 2000-3-3
• Publication Date: 2000

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 31-37

Subject/Index Terms

• TRT Terms: Bridge decks; Condition surveys; Contour maps; Cost effectiveness; Depth; Deterioration; Ground penetrating radar; Inspection; Reinforcing bars
• Geographic Terms: Arizona
• Subject Areas: Bridges and other structures; Design; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 00793101
• Record Type: Publication
• ISBN: 1566769493
• Files: TRIS
• Created Date: May 1 2000 12:00AM