Hydro-Surface Preparation and Coating for Painted Structural Steel, TR-407, 1999

(1999) Hydro-Surface Preparation and Coating for Painted Structural Steel, TR-407, 1999. Transportation, Department of


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TR-407 Tech Brief.pdf

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Cities and counties in Iowa have more than 8,890 steel bridges, most of which are painted with red lead paint. The Iowa Department of Transportation (Iowa DOT) maintains less than 35 bridges coated with red lead paint, including seven of the large border bridges over the Mississippi and Missouri Rivers. Because of the federal and state regulations for bridge painting, many governmental agencies have opted not to repaint, or otherwise maintain, lead paint coatings. Consequently, the paint condition on many of these bridges is poor, and some bridges are experiencing severe rusting of structural members. This research project was developed with two objectives: 1) to evaluate the effectiveness of preparing the structural steel surface of a bridge with high pressure water jetting instead of abrasive blasting and 2) to coat the structural steel surface with a moisture-cured polyurethane paint under different surface preparation conditions.

Item Type: Departmental Report
Keywords: Bridges, Coatings, Hazardous wastes, Lead based paint, Occupational safety, Paint removal, Polyurethane resins, Structural steel, Surface preparation
Subjects: Transportation
Transportation > Bridges and tunnels
Transportation > Roads and highways
Transportation > Traffic safety
Transportation > Equipment
Transportation > Maintenance and preservation
ID Code: 20022
Deposited By: Iowa DOT Library
Deposited On: 07 Jul 2015 12:23
Last Modified: 23 Jan 2018 13:52
URI: https://publications.iowa.gov/id/eprint/20022