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Fluorescing Coatings For Improved Inspection During Bridge Maintenance Painting, Bobby W. Meade, Theodore Hopwood Ii, Sudhir Palle
Fluorescing Coatings For Improved Inspection During Bridge Maintenance Painting, Bobby W. Meade, Theodore Hopwood Ii, Sudhir Palle
Kentucky Transportation Center Research Report
Optically active pigments (OAPs) fluoresce under light exposures with wavelengths (nm) producing emissions in the visible spectra (380 to 740 nm). They are used as paint pigments to aid visual inspection of applied coatings for defects such as pin-holing and incomplete coverage. OAP coatings are widely used in various industries outside of bridge maintenance painting.
This study addressed the laboratory evaluation and field trial of an OAP coating for KYTC bridges. OAP coatings were evaluated for inspectability and accelerated weathering performance in a laboratory test program. After successful laboratory performance, OAP coatings were specified for a KYTC bridge painting project …