PROTECTIVE COATINGS FOR HIGHWAY METALS

This report relates steps taken to minimize coatings maintenance on metal appurtenances; particularly steel beam guardrail, bridge railings, and bridge structural steel girders. The Department has found that galvanizing guardrail and bridge railings yields a coating system that protects the materials at least twice as long as paints. In the course of these studies, a variety of alternative railing materials were tried including aluminum-alloy, unpainted low alloy steel, and concrete. For coating bridge structural steel girders, the Department has conducted laboratory screening tests on paint systems followed by in-service tests of the superior systems. Various coatings systems and Departmental specification revisions are discussed. Recently, the Department has required that low alloy, unpainted steel be used for bridge girders.

• Supplemental Notes:
  • Prepared in cooperation with Federal Highway Administration, Washington, D.C.
• Corporate Authors:

  Michigan Department of State Highways & Transport

  Research Laboratory Section
  Lansing, MI  United States  48904

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Permoda, A J
  • Gabel, A R
• Publication Date: 1974-6

Media Info

• Pagination: 79 p.

Subject/Index Terms

• TRT Terms: Aluminum alloys; Bridge decks; Bridges; Concrete; Corrosion; Highways; Low alloy steel; Paint; Protective coatings; Steel; Traffic barriers; Zinc coatings
• Uncontrolled Terms: Barriers
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00090165
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: R-916 Final Rpt.
• Files: NTIS, USDOT, STATEDOT
• Created Date: Apr 22 1975 12:00AM