[L50] 塩害Ⅲ／耐久性一般Ⅰ

[L1144] CORROSION EVALUATION OF REINFORCING BAR IN SEA WATER MIXED MORTAR BY ELECTROCHEMICAL METHOD

Amry DASAR¹,濵田 秀則²,佐川 康貴²,Rita IRMAWATY¹ (1.Kyushu University,2.九州大学)

キーワード：電気化学的計測,海水,鋼材腐食

Sea water has a potential to be used as mixing water. However, sea water contains high chloride ion concentration which can lead to accelerate corrosion of reinforcement. In order to investigate the effect of sea water as mixing water and partial replacement of cement by Blast Furnace Slag (BFS) on corrosion rate of reinforcement, electrochemical testing such as half-cell potential and polarization curve were conducted. The results show that sea water mixing reduced the passivity of reinforcing bar. However, partial replacement of cement by BFS can reduce the risk of corrosion.
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