RELIABILITY-BASED DURABILITY DESIGN OF REINFORCED CONCRETE STRUCTURES EXPOSED TO MARINE ENVIRONMENTS
According to the limit state design based of reliability theory, the verification of the durability of concrete structures against various deteriorating factors is examined in this fundamental study. Especially, verification of salt attack is considered. Various kinds of uncertainty in the modeling of airborne chlorides transportation to corrosion initiation of reinforcing bar are evaluated using the previous observation or experimental results, and the probabilities that the threshold chloride concentration is exceeded during service life are calculated for concrete structures exposed to marine environments. Without any calculation of probability such as Monte Carlo Simulation, safety factor and design procedure to specify cover ensuring that the probability of corrosion initiation of reinforcing bar is almost the same as a target value, is proposed.