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- W602736712 abstract "A clear understanding of the mechanisms of passivation and depassivation of steel surface is critical to the effective control of rebar corrosion. The process of passivation involves oxidation of iron atoms in the typical concrete environment. Traditional electrochemical approach of interpreting steel corrosion follows voltage and current changes as a result of electrode reactions, therefore is incapable of depicting iron oxidation and the incurred structural change at the atomic scale. A research study was conducted recently to simulate the passivation process of steel using a Quantum Chemistry-based reactive force field. The initiation and growth of oxides were found to be highly dependent on the thermodynamics and availability of reactants. Three oxidation stages were identified until a high-density triplex structure was formed on iron surface, after which the oxidation of iron progressed at a significantly reduced speed. Results from this study will benefit improving the knowledge base and controlling of rebar corrosion." @default.
- W602736712 created "2016-06-24" @default.
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- W602736712 date "2012-01-01" @default.
- W602736712 modified "2023-09-28" @default.
- W602736712 title "Passivation of Steel Surface in the Typical Concrete Environment: A Critical Issue in Understanding Reinforcement Corrosion" @default.
- W602736712 hasPublicationYear "2012" @default.
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