Abstract
Abstract: RC (Reinforced Concrete) structures are considered as cost-benefit and durable however performances of structural safety and du rability are degraded due to steel corrosion. Service life in RC structure is differently evaluated due to different local environmental conditions even if it is exposed to the same chloride attack. In the paper, 25 concrete cores from field investigation are obtained from 4 RC columns with durat ion of 3.5 ∼4.5 years exposed to sea water. Through total chloride content measurement, surface chloride contents and apparent diffusion coefficients are evaluated. Service life of the target structure is estimated through deterministic method based on Fick's 2 nd Law and probabilistic method based on durability failure probability, respectively. Probability method is evaluated to be more conservative and relatively decreased service life is eva luated in tidal zone and splash zone over 40.0 m. Chloride penetration behavior with coring location from sea level and the present limitations of durab ility design method are investigated in the paper.Keywords: Durability design, Deterministic method, Probability method, Apparent diffusion coefficient, Field investigation
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