Self-healing Performance Evaluation for Concrete Beams with Artificial Inner Tunnel and Repair Agents by Non-destructive Testing

In this study, the self-healing system was developed using an artificial inner tunnel and a repair agent for the purpose of automatic repair of cracks. The effect of concrete beam section type on repair performance and the change in strength recovery rate when repair was repeated, and the efficiency of repair performance evaluation by various non-destructive tests were carried out. As a result, it was confirmed that the strength recovery rate after repeated repairs recovered to the original level of strength and rigidity before cracking occurred in all cases of each beam section type.