Use of UV Spectroscopy for Detecting Migrating Corrosion Inhibitor Depth in Concrete

摘要

Migrating corrosion inhibitors (MCIs) are organic inhibitors based on amino-carboxylate chemistry that have been effectively used for the protection of embedded steel rebar in concrete. This work discusses MCI detection using ultraviolet spectrophotometry methods. We found that five weeks after a surface was impregnated with a MCI, the inhibitor migrated to a depth of more than 3 in (76 mm).