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Bridge Maintenance Painting Guidance, Training and Test Site

Status:  Complete
Report Date:  09/16/2019

Summary:

Researchers examined five maintenance paint coating systems recommended for steel bridges showing localized corrosion. Systems were applied with minimal surface preparation and evaluated for three years after application. The coatings performed well. If corrosion is identified early and maintenance painting is performed, the service life of the paint coating system will be extended five years before repainting is required. Recommendations developed for MnDOT's Bridge Maintenance Painting Manual included timing of maintenance painting based on paint coating condition ratings.

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