Active steel repassivator for corroded steel in chloride...

C - Chemistry – Metallurgy – 23 – F

Patent

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Details

C23F 11/12 (2006.01) C04B 41/50 (2006.01) C04B 41/65 (2006.01) C23F 11/10 (2006.01) C23F 11/14 (2006.01) C23F 11/18 (2006.01)

Patent

CA 2395020

An active steel repassivator for the rehabilitation of chloride contaminated reinforced concrete structures and a method for the application of same is disclosed. The active steel repassivator is comprised of a continuous phase, a distributed phase, and/or an aqueous solution of an amine. The continuous phase, also known as the carrier phase, is selected from organic strong volatile bases, salts of weak volatile acids and a non-ionic surfactant. The distributed phase includes an anion containing vanadium in the +4 or +5 state of oxidation. The aqueous solution of the amine acts as a co-inhibitor in the composition.

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