DETERIORATION IN SALTED BRIDGE DECKS

WHEN DEICING SALTS REACH BRIDGE-DECK REINFORCING STEEL, AN ELECTROLYTIC ACTION BEGINS THAT CAUSES SOME OF THE STEEL TO CORRODE, LEADING TO UNDERSURFACE FRACTURES AND POTHOLES. WHILE INCREASED COVER AND IMPROVED CONCRETE ARE ARE VALUABLE, THE PROPOSITY OF CONCRETE MAKES NECESSARY AN AN IMPERVIOUS MEMBRANE TO PREVENT SALT INTRUSION. AT PRESENT ONLY COAL-TAR-EXTENDED EPOXY AND A MULTILAYER SANDWICH OF COAL TAR AND GLASS FABRIC DO NOT SUFFER FROM THE DRAWBACK THAT THEY CANNOT BE BONDED TO THE DECK OR THE OVERLAY CANNOT BE BONDED TO THEM. THESE TWO MATERIALS ARE DISCUSSED IN RELATION TO PARTIAL VERSUS TOTAL RESTORATION, CONTINUOUS PATCHING VERSUS RESTORATION, CONCRETE SOUNDING AND REMOVAL. APPLICATION OF SEALS, ASPHALT CONCRETE OVERLAYS, AND DEVELOPMENTAL WORK ON NONCORROSIVE DEICERS.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/sr/sr116/116-005.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309018439
• 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
• Authors:
  • Stewart, Carl F
• Conference:
  • Western Summer Meeting
  • Location: Sacremento California, United States
  • Date: 1970-8-17 to 1970-8-19
• Publication Date: 1971

Media Info

• Media Type: Print
• Features: Figures;
• Pagination: pp 23-28
• Monograph Title: Improving Pavement and Bridge Deck Performance
• Serial:
  • Highway Research Board Special Report
  • Issue Number: 116
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Bridge decks; Coal tars; Concrete; Corrosion; Deicers (Equipment); Durability; Epoxy resins; Fabrics; Fiberglass; Fracture mechanics; Glass; Impervious membranes; Reinforcing steel; Salts; Seal coats
• Uncontrolled Terms: Deicers
• Old TRIS Terms: Glass fabric
• Subject Areas: Highways; Maintenance and Preservation; Pavements; Vehicles and Equipment;

Filing Info

• Accession Number: 00207249
• Record Type: Publication
• ISBN: 0309018439
• Files: TRIS, TRB, ATRI
• Created Date: Jun 29 1971 12:00AM