Effect of Inhibitors on the Electrochemical Corrosion Behavior of Mild Steel Embedded in Concrete in Dilute Sulphuric Acid

Experiments have been performed on the electrochemical corrosion behavior of mild steel rebars buried in concrete admired with different inhibitors and sodium chloride salt, and exposed to dilute sulphuric acid environment. This paper reports the observed electrochemical corrosion response from the electrode potential monitoring of the reinforcing mild steel rebars during the experiments. The effect of admired inhibitors on the compressive strengths of the used reinforced concretes are also reported. The added inhibitors provided varied degrees of protection to the embedded steel rebars. Concretes admixed with the mixture of potassium dichromate and formaldehyde, recorded some loss of compressive strengths; while the addition of formaldehyde and sodium nitrite had no effect. Potassium dichromate decreased the compressive strength of the reinforced concrete