Abstract
Surface defects of reinforced concrete structures are often evaluated only by appearance, so the effect surface defects have on the mass transfer resistance of the surface layer of concrete has not been fully explored. In this study, sand streaks and surface bubbles were intentionally caused by varying specimen shape for mortar as a basic study, and their effects on chloride permeability were studied experimentally. As a result, bleeding water could be related to the generation of sand streaks and surface bubbles, and, when sand streaks and surface bubbles occurred, chloride ion penetration was found to be deeper than in the reference specimen. On the other hand, even when sand streaks and surface bubbles did not occur, depending on the specimen shape, in some cases there were locations where bleeding water tended to accumulate. Due to the accumulation of bleeding water, the surface quality of the mortar was reduced, and there was a possibility that the chloride ion permeability increases.
