Study of the effects of dual-effect repair on the corrosion resistance performance of steel reinforcement using electrochemical migration rust inhibitors and electrodeposition
The corrosion of steel reinforcement significantly shortens the lifespan of concrete structures.Based on electrochemical migration rust inhibitors,a dual-effect repair method involving the use of both electrochemical migration and electrodeposition is proposed to re-pair corroded steel reinforcement and prevent secondary corrosion.The dual-effect repair effects were assessed through electrochemical impedance spectroscopy tests and chloride ion titration.The impact of dual-effect repair on the mortar performance was evaluated through capillary water absorption tests.The underlying mechanisms of dual-effect repair were ana-lyzed using XRD and SEM tests.The results demonstrate that dual-effect repair significantly reduces chloride ion content inside the mortar.The corrosion resistance of the steel rein-forcement improves by two orders of magnitude after repair,with ethanolamine+magnesi-um sulfate exhibiting the best repair performance.Additionally,after electrodeposition re-pair,the mortar's compactness is enhanced,and the magnesium sulfate deposition is most pronounced.
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