Laboratory and field evaluations are ongoing on several commercially available corrosion inhibiting
admixtures for concrete. The study, presently in its tenth year focuses on long-term performance in
partially submerged coastal marine applications. The study includes laboratory and field evaluations to
determine the ability of the inhibitors to remain stable over long periods of time, determinations of longterm
effectiveness of corrosion inhibiting capabilities and a tentative quantitative assessment of
durability improvements and possible negative side effects.