Repair of Carbonated Steel Bar Reinforced Concrete by Corrosion Inhibitor Auxiliary Realkalization Technology

The mass transfer behavior of two alcohol amine corrosion inhibitors in concrete protective layer was studied by migration experiments.Corrosion inhibition effect of corrosion inhibitors on steel bars in simulated concrete pore liquid (2 000 mg/L NaCl solution) was studied by electrochemical testing method.The repairing effect of corrosion inhibitor auxiliary realkaliation technology on carbonized steel bar reinforced concrete structure was studied by simulation test.The results show that the corrosion inhibitors can effectively inhibit the corrosion of steel bars in simulated concrete pore solution.The impressed electric field promoted the migration and diffusion process of the alcohol amine corrosion inhibitors.The corrosion inhibitor auxiliary realkaliation technology can improve the repair effect of realkalization and effectively inhibit the corrosion of steel bars in concrete structure.