電気炉還元スラグによる軟弱土の改良

概要

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Although the slag, which is secondary product of steel production, has become to be utilized in many ways, the ratio of utilizing reducing slag produced from electric arc furnace is still low because of its swelling character, for instance. To utilize reducing slag produced from electric arc furnace for the improvement of soft clayey soil, laboratory and field tests were carried out, and the results were as follows: (1)In laboratory tests, the strength of soft clayey soil was improved by adding from 10 to 30% reducing slag in weight. (2)In field tests, the properties of soft clayey soil which 20% reducing slag in weight was added to were similar with those which 5% cement in weight was added to. (3)The mechanism of the improvement was assumed to be caused by hydraulic reaction by 12CaO ·7Al2O3 for instance.
電気製鋼研究会の論文