Abstract
This paper describes the results of the investigation of the concrete floating, corrosion of reinforcing steel bars, and chloride ion content in the concrete of the Asahi Bridge over a tidal river, which is considered to be a bridge requiring special attention in the next generation bridge life extension and repair plan, using several nondestructive investigations based on different measurement principles, and examines its application to maintenance management. The application of the results to maintenance and management of the bridge was investigated. Based on the results of the nondestructive investigation, a dismantling investigation was also conducted to visually confirm the corrosion status of the rebar, and the reliability of the nondestructive investigation was also verified. The results of the nondestructive investigation showed that the use of nondestructive investigation for maintenance and management is highly advantageous, and it is possible to shift to an advanced preventive maintenance cycle. Based on the results of this study, issues and future developments in the application of nondestructive investigation to maintenance management are also presented.
