INSTALLATION OF EXPERIMENTAL COATINGS ON STRUCTURAL STEEL. CONSTRUCTION REPORT

Protection of structural steel has become a major problem for Departments of Transportation. These problems include the banning of lead-based paints, a paint's volatile organic content (VOC), and disposal of contaminated sandblast residue. In an effort to overcome the above problems, the Connecticut Department of Transportation installed protective coating systems that employ both organic-zinc-rich paint and a zinc/aluminum alloy; that was applied by the metallizing process also known as thermal spraying. Since both primers are anodic to steel, it is reasoned that the primers will provide electrochemical (galvanic) protection and also act as a moisture barrier. Aliphatic urethane was chosen as the topcoat for its resistance to abrasion, chalking and fading. It is envisioned that these nonlead systems will provide long-term protection of structural steel. This report covers the installation of various protective coating systems, problems encountered, and costs.

• Corporate Authors:

  Connecticut Department of Transportation

  Bureau of Highways, 24 Wolcott Hill Road, P.O. Drawer A
  Wethersfield, CT  United States  06109

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Kasinskas, M M
• Publication Date: 1991-7

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 26 p.

Subject/Index Terms

• TRT Terms: Building; Coatings; Corrosion protection; Costs; Facilities; Installation; Moisture barriers; Organic coatings; Protective coatings; Structural steel; Urethane; Zinc alloys; Zinc rich paint
• Uncontrolled Terms: Thermal spray coatings
• Subject Areas: Construction; Finance; Geotechnology; Highways; Maintenance and Preservation; Materials; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00618118
• Record Type: Publication
• Report/Paper Numbers: FHWA-CT-RD-1084, Rept 1084-1-91-5
• Contract Numbers: Study 1084
• Files: TRIS, USDOT, STATEDOT
• Created Date: Dec 31 1991 12:00AM