Passivation and Corrosion of Black Rebar with Mill Scale
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Beschreibung
The passivation and corrosion of metal are significantly affected by its surface state and chemical characteristics. In practical engineering, the reinforcement is with mill scale or rust stains. Its passivation and corrosion are obviously different from the descaled one. This book briefly discusses the pseudo-passivation behavior and corrosion mechanisms of hot-rolled rebars with mill scale and provides the corresponding protection measures, which can be used as a reference for corrosion or civil engineers.
The passivation and corrosion of metal are significantly affected by its surface state and chemical characteristics. In practical engineering, the reinforcement is with mill scale or rust stains. Its passivation and corrosion are obviously different from the descaled one. This book briefly discusses the pseudo-passivation behavior and corrosion mechanisms of hot-rolled rebars with mill scale and provides the corresponding protection measures, which can be used as a reference for corrosion or civil engineers.
Shows the actual hot-rolled rebars with mill scale in concrete which may not produce the passive film as expected Shows rebar corrosion happens preferentially at the mill scale defects Proves rusty rebar is difficult to be re-passivated and ready to corrode when there is water or aggressive ions
Autor*in
Xinying Lu
Themen in »Passivation and Corrosion of Black Rebar with Mill Scale«
Rebar corrosion Passive film Galvanic corrosion Mill scale of rebar Passivation of reinforcement Cathodic protection Concrete durability Redox mechanism Oxidation of mill scale Reduction of mill scale