Application for Lean Concrete Using Basic Oxygen Furnace-Slag

제강 풍쇄 슬래그 잔골재를 활용한 빈배합콘크리트 적용성 연구

  • 김진철 (한국도로공사 도로교통기술원) ;
  • 심재원 (한국도로공사 도로교통기술원) ;
  • 조규성 (한국도로공사 도로교통기술원)
  • Published : 2004.11.01

Abstract

In these days the exhaustion of natural sand has been highlighted with the environmental damages due to excavating sea-sand. Many researchers and engineers have investigated some materials to replace natural sand with, and were interested in using the basic oxygen furnace-slag, the industrial by-product, as fine aggregate. One of the drawbacks to using BOF-slag as a aggregate is to be gradually expanded, and needed the time-consuming process, but some engineers in Korea tackled it recently. In this study, the stabilized BOF-slag was used for lean concrete under the laboratory condition. After testing the several properties - dry density, compressive strength, and young's modulus-, it was found that the dry density was proportionally governed by BOF-slag content and the 7-day compressive-strength was $110\~120\%$ of the natural sand-made. Therefore, BOF-slag is applicable to the lean concrete because they greatly satisfied the required strength, $50kgf/cm^2$.

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