Steel Corrosion Behavior Measurement Based on Electrochemical Approach

摘要

Concrete is an important material commonly used in the building. The exposure of the reinforcedconcrete in different environment could cause different rate of corrosion. Chloride ions and carbondioxide are two major substances could accelerate the corrosion rate. In this contribution, we used theelectrochemical methods for evaluating the corrosion rate of the two different types of concrete in thepresence of chloride ions and carbon dioxide environment. Polarization resistance, polarization curvesintersection and electrochemical impedance spectroscopy were applied for detail analysis. The resultsshowed the corrosion rate of both concrete was similarly when exposed to carbon dioxide while thebinder played an important role when the environment contained chloride ions.