Evaluation on structural performance of RC bridge deck subjected to chloride-induced deterioration and frost damage by large-scale chamber controlling temperature and humidity

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Using a large-scale chamber makes it possible to control temperature and humidity, the accelerated testing methods for giving RC bridge deck specimens chloride induced deterioration and frost damage were developed. Then, the fatigue durability for the specimens subjected to chloride induced deterioration, frost damage, and these combined deterioration were evaluated by wheel tracking load test. The experimental results revealed that the fatigue durability of RC bridge deck was remarkably reduced by chloride induced deterioration. Further, it was recognized that the fatigue durability of RC bridge deck depends on the corrosion of the upper reinforcement while the static load carrying capacity of RC members depends on that of the lower reinforcement.