コンクリート用細骨材としてのフェロニッケルスラグの利用
1986 年 1986 巻 366 号 p. 103-112
詳細
1986 年 1986 巻 366 号 p. 103-112
A total of eight ferro-nickel slags were studied for their possibility of being used as fine aggregate in concrete. Special emphases were placed on their effects on the freeze-thaw resistance and long-term stability of concrete. It was observed that the freeze-thaw resistance of slag concrete was generally lower than that of ordinary concrete with river sand. The increased bleeding of slag concrete was mainly responsible for the low freeze-thaw resistance. Slags which were composed of only forsterite and amorphous silica were found to cause a reaction with alkalis in concrete, while other moderately-cooled slags were stable. Grain popouts were observed when certain slags were used. Three slags were considered not to impair the durability of concrete. Properties of fresh concrete were also discussed briefly.
