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In 2011, the Federal Highway Administration (FHWA) tested eight one-coat systems, as well as one two-coat and one three-coat systems. They were tested on steel panels that were blast cleaned to Scientific Society for Protective Coatings Surface Preparation 10 standard, and coatings were applied using airless spray.

Coatings for steel bridges are used to prevent corrosion and subsequent degradation of structural properties. Since the use of zinc rich primers in the 1970’s, it has been a challenge to match the longetivity of the primers with existing and developing topcoats until the early 1980’s with the introduction of Fluoroethylene vinyl ether (FEVE). FEVE resin, a fluoropolymer resin for coatin...