Effect of New Corrosion Inhibitor on Electrochemical Behavior of Prestressed Steel Wire in Simulated Concrete Pore Solution

Abstract

The polarization curve and AC impedance are used to study the impacts of new corrosion inhibitor on the prestressed steel wire electrochemistry action in the simulated concrete pore solution. The result shows that, the ammonium molybdate, DETA, propylene thiourea, 1,4-butynediol and other compound corrosion inhibitors are positive inhibitory corrosion inhibitors, with the components of passivator and healant of protective oxide film, which can contribute to the formation of a passive film of oxide on the rebar surface, repair the defects of rebar surface, coat the entire rebar with a passive film of oxide with good compactness and stability, prevent the chloride ion from penetration, reduce the free rate of iron ions, and thus achieve the anti-corrosion purpose.