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In this paper, the influence of steel slag on the compressive strength, permeability to chloride ion and carbonation resistance of steam-cured concrete was investigated. The results show that for steam-cured concrete with water to binder ratio (W/B) of 0.45, replacing 30% of cement by steel slag tends to decrease its compressive strength, increase its chloride permeability and weaken its carbonation resistance. But the properties of steam-cured concrete with steel slag can be improved by decreasing the W/B. When the W/B of concrete containing 30% steel slag is 0.38, its strength, chloride permeability and carbonation resistance are all very close to that of pure cement concrete with W/B of 0.45 under steam curing condition.

Influence of steel slag on the properties of steam-cured concrete