| Summary: | 碩士 === 國立臺灣科技大學 === 營建工程系 === 102 === This study explored the relationship between the diffusion of the chloride ions and the reinforcement corrosion in mortar. Such relationship was not studied in literature although the diffusion of chloride ions in concrete was well discussed. In this study, the corroded reinforcements were prepared in advance by applied currents. Mortar specimens with w/c of 0.6 were prepared and cured using either salt or fresh water. Results showed that the chloride ion distribution was associated with the reinforcement corrosion. During the early hydration, the chloride ions were attracted by the reinfoecement corrosion in the specimens prepared with salt water and cured in fresh water. On the contrary, the chloride ions were repulsed in those prepared with salt water and cured either in air or by self-curing. However, in the long-term hydration, such influencing effects were not clear, possibly due to the hydration. In addition, this study explores the above relationship in carbonated mortar. As the carbonation proceeded, the chloride ion migration slowed down and the reinforcement corrosion was reduced.
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