DURABILITY OF REINFORCED CONCRETE SPECIMENS MADE WITH DIFFERENT CEMENT UNDER MARINE ENVIRONMENT

Abstract

This report was investigated about durability of concrete and corrosion of reinforcement bar of several RC specimens exposed to marine and atmosphere environment. As for cement, 3 kinds of portland cement and 7 kinds of blended cement were used. Blended cement mixed blast furnace slag or fly ash or Limestone powder. Exposure time was 10 years. As a result, compressive strength of each concrete has increased. However, the level of an increase of strength was different by the kind of cement and the exposure environment. Carbonation depth of concrete with blended cement was larger than that of portland cement. However, the resistance of corrosion due to the chloride induced deterioration of blended cement was very high compared with portland cement.