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Partial Repair in Reinforced Concrete using Corrosion Inhibitor

José Emidio Alexandrino Bezerra

In general, the standards recommend that repairs in places affected by corrosion have done by removing the concrete around the oxidized reinforcement. However, this can pose risks to the integrity of the structure, especially in relation to the pillars, and here, they were present in abbreviated form. To evaluate the difference in effectiveness between the two options for structural repairs, a qualitative laboratory research carried out, based on the variation of corrosion potentials measured with a Cu/CuSO4 semi-cell, in prismatic specimens submitted to corrosion tests induced by chlorides. Then, the use of anodic or cathodic corrosion the partial repairs, although they presented inferior results to the total repairs, in relation to the initiation of the corrosion, they are better that the common structural concrete. This, indicating that, they can be a good option for extending the useful life of the structure, with lower risks and costs