LAUSR

Bidirectional electromigration rehabilitation (BIEM) is a novel electrochemical rehabilitation method involving the injection of inhibitors into steel bar surface. The BIEM effect and hydrogen embrittlement (HE) risk depend on the electrochemical parameters (current density and duration) and operating condition (stress level and concrete cover thickness) of reinforced concrete structures. Experiments were performed in this study to investigate the relationships between the aforementioned factors. For a small current density group, a linear relationship was established between electric flux and chloride extraction. For a large current density group, the reasonable current density, stress level, and treatment time were obtained. Finally, the querying method of electrochemical parameters combined with treatment time and current density was proposed.