Chloride-induced corrosion is widely accepted as one of the primary causes of premature deterioration for concrete structures in\nmarine or deicing salt environment. For precast concrete (PC) structures, such durability problems may even be severer because\ndefects in joint areas, e.g., cracks caused by grout shrinkage and improper construction, can accelerate chloride ion transportation\nprocess and may cause the interface shear failure when subjected to seismic load. By applying the path probability model (PPM)\nand reliability theory, a probabilistic framework was proposed to predict three limit states of PC structures, including corrosion\ninitiation, serviceability limit state, and ultimate limit state. Using Monte Carlo simulation, a beam-to-column joint was further\nanalyzed to illustrate the differences between PC structures and those cast in situ. The analysis indicates that corrosion initiation\nand serviceability limit state are sensitive to chloride diffusivity at connection area, and the higher pitting factor can significantly\ninfluence the bearing capacities of PC structures.
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