ACTIVE STEEL REPASSIVATOR FOR CORRODED STEEL IN CHLORIDE CONTAMINATED REINFORCED CONCRETE STRUCTURES

摘要

An active steel repassivator for the rehabilitation of chloride contaminatedreinforced concrete structures and a method for the application of same isdisclosed.The active steel repassivator is comprised of a continuous phase, adistributed phase,and/or an aqueous solution of an amine. The continuous phase, also known asthecarrier phase, is selected from organic strong volatile bases, salts of weakvolatile acidsand a non-ionic surfactant. The distributed phase includes an anion containingvanadium in the +4 or +5 state of oxidation. The aqueous solution of the amineactsas a co-inhibitor in the composition.