ELECTROCHEMICAL CORROSION BEHAVIOR OF REBAR IN SIMULATED PORE SOLUTION
钢筋在混凝土模拟孔隙液中腐蚀电化学行为

The electrochemical corrosion behavior of rebar in simulated pore solution was studied by potentiodynamic polarization. The critical relationship between pH and the concentration of chloride ion was obtained. The relationship is explained by competitive adsorption of chloride ions and hydroxide ions for local area on the passive film. The corrosion rate(I corr ) increased however the breakdown potential of passive film (E b) decreased with the increase of the concentration of chloride ion (C Cl - ) and the decrease of pH.