This work examines the corrosion behavior of reinforcing steel (RC) embedded in concrete mixes of various types by incorporating both Ordinary Portland Cement (Type I) and Sulfate-Resistance Portland Cement (Type V) and Blends with Fly Ash (PFA) or Slag (GGBS). The RC specimens were exposed to wet-dry cycles of chloride and/or sulfate solutions. Theory predicts that under such conditions the electrode potentials of the steel can suffer the formation of anode and cathode regions that depend on cement type and the local environment, so localized corrosion may occur. The final results in this...