Effects of Macrocell between Corroding and Non-Corroding Reinforced Steel Bars (IMAGE)

NACE International

Effects of Macrocell between Corroding and Non-Corroding Reinforced Steel Bars

Caption

This schematic shows the effects of a macrocell between a corroding reinforced steel bar (black dot) and non-corroding bars (white dots). The arrows depict the electric current circulating between the bars, while the colors show the variation of the electrochemical potential in the concrete wall (blue for high potential or red for low potential).

Credit

Courtesy of Politecnico di Milano -- Department of Chemistry, Materials and Chemical Engineering

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