Life cycle cost management of concrete structures relative to chloride-induced reinforcement corrosion

Chloride-induced reinforcement corrosion is one of the major causes for the deterioration of concrete structures. This article has developed a performance-based life cycle cost management (LCCM) model for reinforced concrete structures relative to corrosion deterioration. This model is characterised by three features: (1) a chloride-induced probabilistic corrosion deterioration mechanism is used to predict the service life of concrete structures; (2) the performance of a concrete structure is measured by serviceability limit states and structural capacity limit states; and (3) a dual management methodology is adopted, in which management actions are optimised to maximise the life cycle performance of a concrete structure under limited budget constraints and minimum required serviceability constraints. Case studies of bridge decks and piers are provided to demonstrate the application of the proposed performance-based LCCM model.