Effects of Chloride Contamination on Coatings Performance

Bobby W. Meade, Sidhir Palle, Theodore Hopwood & Rick Younce
Research indicates that chloride concentration as determined by currently available field test methods does not reliably predict protective coating performance on KYTC bridges. Laboratory testing of chloride charged panels also failed to relate chloride concentration to coating performance. The coatings industry provides recommendations for acceptable chloride levels for various exposure conditions but bridges are different than other structural steel and the exposure conditions for bridges are not adequately addressed. Effective chloride remediation strategies and protective...
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