The Electrochemical Characterization of Rebar Passivation Film in Simulated Concrete Media

Abstract:

Based on the fundamental theory of electrochemical anodic polarization, simulated concrete is doped with corrosion inhibitor to prevent corrosion by chloride ion in the marine environment. Thus, with reference to the potential-time curves obtained in different concrete environments and construction conditions, the early dynamic state of active transition of rebar passive films in concretes can be quickly characterized. According to the experiments, the characteristics of passive active transition are synchronous with rebar corrosion. This helps to systematically study the influence of different components of concrete and external media on the durability of the concrete structure. The strong alkaline environment of the concrete is useful in controlling corrosion rate of reinforcing bar. As one of the additional protective measures of the durability of the concrete structure, corrosion inhibitor’s long-term performance contains uncertainty.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 539-545
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.539
• Online since: May 2011
• Authors: Wei Zhong Gan, Wei Liang Jin, Jian Ping Shao
• Keywords: Anodic Polarization, Characterization, Passive Films, Rebar Corrosion

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