Abstract
Since there is no infrastructure that is maintenance-free, both application technologies and public management systems for infrastructures, including financial plans for maintenance, are necessary to keep their public services safe and reduce the nation's social cost. One of the frontier models for securing the longevity of an unpainted weathering steel structure system is introduced in this review article, in which the development of advanced weathering steels, mathematical models for corrosion prediction, methods for corrosion monitoring toward risk navigation, and addition of handy repair techniques to cope with the contingent cases in which thickly grown rust happen to form, etc., are systematized. The basic concept and supporting technologies for “minimum maintenance steel structures” recently developed in Japan are also reviewed.
