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영어

The existing method to finish the exterior of a building has the strength that it can pattern or color by directly applying synthesized paint on the concrete wall and that it can give variety to the building according to the changes of its use. However, this also has the weakness to increase the construction period, which can cause the increase of the labor force and the additional
construction cost of finishing exterior materials. This research was conducted because, in the architectural industry, the shortened construction period is making the construction cost lower, and the use of red mud, an industrial waste, for coloring is bring about the decline in the industrial waste. The results of this study showed that, in terms of the compressive strength depending on the substitution ratio of blast furnace slag, the compressive strength was highest with 40 % of substitution ratio, and, as for the amount of air, the bigger the compressive strength was, the smaller the amount of air became. The liquidity of slump flow was biggest with the value of 700 mm at 40 % and 60 % of substitution ratio.