EVALUATION OF COATINGS ON COASTAL STEEL BRIDGES, 16-YEAR PERIOD

DURING THE PERIOD 1952--1968 THE CALIFORNIA DIVISION OF HIGHWAYS INVESTIGATED A BROAD SPECTRUM OF PRIMER AND FINISHING PAINTS TO COMBAT CORROSION OF STEEL BRIDGES IN A MARINE ENVIRONMENT. PARTICULAR ATTENTION IS GIVEN TO THE LEFFINGWELL AND SAN SIMEON CREEK BRIDGES, WHICH SINCE THEIR CONSTRUCTION IN 1932 HAD REQUIRED REPAINTING EVERY 3--4 YEARS WITH THE SAME PAINTS THAT LASTED 25--30 YEARS ON INLAND STRUCTURES. AFTER 10 YEARS (1962), TEST SECTIONS OF THE TWO BRIDGES SHOWED THAT THE BEST SYSTEM WAS AN INORGANIC POST-CURE ZINC-PIGMENTED SODIUM SILICATE PRIMER HAVING A VINYL FINISH COAT. THIS SYSTEM WAS RATED 9+, WITH 10 BEING PERFECT. THE EVALUATION OF THE INORGANIC SELF-CURE ZINC-PIGMENTED SILICATE PRIMERS WILL NOT BE COMPLETE FOR 6--10 YEARS. ALL OTHER SYSTEMS PROVIDED DEFINITELY INFERIOR PROTECTION, THE NEXT BEST BEING AN ALL-VINYL TYPE. /AUTHOR/

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrr/1970/320/320-005.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Coatings, Signing and Marking Materials and presented at the 49th Annual Meeting. 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:
  • Rooney, Herbert A
  • Woods, Albert L
  • Shelly, Thomas L
• Conference:
  • 49th Annual Meeting of the Highway Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1970-1-12 to 1970-1-16
• Publication Date: 1970

Media Info

• Media Type: Digital/other
• Features: Figures;
• Pagination: pp 34-40
• Monograph Title: Joint sealants, paint and pipe
• Serial:
  • Highway Research Record
  • Issue Number: 320
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Anticorrosion coatings; Bridges; Coatings; Corrosion; Corrosion resistance; Metal bridges; Paint; Seas; Steel; Steel bridges
• Old TRIS Terms: Anticorrosion paint; Marine atmospheres
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Maintenance and Preservation; Materials;

Filing Info

• Accession Number: 00217040
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Dec 28 1970 12:00AM