Abstract

The corrosion initiation process dynamics of reinforcement steel coated with mortar is studied using a non-linear signal analysis technique named “recurrence plot”. Electrochemical noise current-time series with an open circuit are analyzed to determine the magnitude of the interaction of corrosion microcells in presence and in absence of a corrosion inhibitor. The corrosion dynamic shows a complex nature. The interaction among corrosion micro-cells changes depends on a localization index (LI). A higher LI implies a more discrete distribution of corrosion micro-cells along with a significant interaction, and a corrosion system auto-organization.

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