| 要旨 |
Better chloride resistance; however, worse carbonation resistance of GGBS concrete compared to that of OPC concrete are well known. Also there is a possibility that RC structure is exposed to both chloride and carbonation. So objective of this research is to study corrosion of steel in GGBS concrete under cyclic exposure to carbonation and chloride. GGBS concrete were mixed with different replacement ratios. Specimens, individually or cyclically exposed to chloride and carbon dioxide, were measured corrosion by half-cell potential. Results show that corrosion was accelerated by NaCl-CO2 cycle but retarded by water-CO2 cycle.
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