Contact: Alysa Reich
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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