Influence of Rust Inhibitor on the Corrosion Resistance of Reinforcement in Cement Paste with Chloride

The electrical resistance and polarization effect of cement paste containing reinforcement were tested to research the anti-corrosion properties steel bars in paste. Moreover, microstructure composition passivation film rust on studied. water–cement ratio this study was 0.3, with 0.5% NaCl, 1% NaNO2, Benzotriazole, an assembly unit NaNO2 + Benzotriazole by mass added provide a chloride environment. X-ray photoelectron spectroscopy (XPS) scanning electron microscope (SEM) applied paste, respectively. results indicated that samples showed highest resistance, while specimens 1.0% lowest resistance. weakened increasing distance from surface bars. Therefore, corrosion becomes more serious distance. Finally, influence inhibitor decreased following order: >1.0% NaNO2>1.0% Benzotriazole.