2020 Volume 76 Issue 1 Pages 21-40
This study conducted several loading tests by using bridge RC slabs used for 49 years in order to evaluate the structural performance of RC slabs affected by both frost damage and ASR. As the results, it was found that layered cracks occurred between top surface and lower rebars reduce the stiffness and fatigue durability of RC slabs. Also, especially when layered cracks spread throughout the slab, the progress of fatigue damage became rapid. Further, it was indicated that the conventional deflection-based soundness evaluation method, which was proposed for evaluating the soundness of RC slabs subjected mainly to fatigue, seems not be applied to evaluate the soundness of RC slabs affected by frost damage-ASR combined action.
