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Construction Performance of High Strength Concrete Utilizing Wasted Limestone Coarse Aggregates

석회암 폐석 굵은골재를 사용한 고강도 콘크리트의 시공

  • Han, Cheon-Goo (Department of Architectural Engineering, Cheong ju University) ;
  • Kim, Ki-Hoon (Department of Architectural Engineering, Cheong ju University)
  • Received : 2015.03.13
  • Accepted : 2015.11.10
  • Published : 2015.12.20

Abstract

The aim of this research is suggesting application method of the wasted rock obtained from the limestone quarry of raw material for cement as a coarse aggregate for high strength concrete after crushing and sieving processes. The wasted rock has been normally wasted because of its low quality as a material for cement production. In this research, the concrete using this wasted limestone coarse aggregate was evaluated the constructability based on the performances of workability, air content, and compressive strength. From the experiment, a favorable performance was achieved with a limestone coarse aggregate for high strength concrete comparing to the high strength concrete using granite coarse aggregate.

본 연구에서는 국내의 석회암 광산에서 시멘트 제조를 위해 채굴되는 석회석을 시멘트 제조용으로 사용하지 못하는 저품위 석회암 폐석을 분쇄 및 체가름 등의 골재 생산설비를 통하여 제조한 석회암 굵은 골재를 고강도 콘크리트용 골재로의 활용성을 검토한 것이다. 즉, 석회암 굵은 골재를 사용한 고강도 콘크리트의 유동성, 공기량, 압축강도 등의 시공 특성을 화강암 굵은 골재에 대한 치환율로 변화시켜 그 성능을 검토하였다. 실험결과 굳지 않은 콘크리트 및 경화 콘크리트에서의 시공특성은 화강암 골재를 사용한 고강도 콘크리트와 동등 이상의 양호한 시공품질이 확보되는 것을 확인할 수 있었다.

Keywords

References

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