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A Study on the Improvement of Property of Concrete using Copper Slag and Fly ash

동슬래그 및 플라이애쉬를 혼합하여 제작한 콘크리트의 성능 향상 연구

  • Kim, Chun Ho (Department of Civil Engineering, Joongbu University) ;
  • Lee, Won Goo (Department of Civil Engineering, Joongbu University) ;
  • Kim, Nam Wook (Department of Civil Engineering, Jeonbuk National University)
  • 김춘호 (중부대학교 공과대학 토목공학과) ;
  • 이원구 (중부대학교 공과대학 토목공학과) ;
  • 김남욱 (전북대학교 공과대학 토목공학과)
  • Received : 2014.12.24
  • Accepted : 2015.02.06
  • Published : 2015.02.28

Abstract

Generally, when using copper slag mixed into the concrete, due to higher weight of copper slag, a reduction in the compressive strength and durability of the hardened concrete to increased bleeding is caused. In this study, hence copper slag, a kind of by-product was used as an alternative to the fine aggregate, it was carried out in combination with the use of fly ash in eliminating disadvantage and recycling aspects. As a result of this study, the mixing of fly ash is decreased in the 50% of bleeding, 5% of drying shrinkage, 30% of carbonation test and improvement of 10% of compressive strength than that of copper slag only at most.

일반적으로 동슬래그를 콘크리트에 혼입하여 사용하는 경우, 동슬래그의 높은 자중으로 인한 블리딩의 증가로 경화 콘크리트의 압축강도 및 내구성의 저하가 유발된다. 본 연구에서는 산업부산물인 동슬래그를 잔골재의 대체골재로 사용하고자 하였는데 이에 따른 단점의 해소 및 자원 재활용 측면에서 플라이애쉬와의 병용 사용을 실시하였다. 본 연구 결과, 플라이애쉬의 혼입은 동슬래그만 단독으로 사용한 경우보다, 블리딩은 50%, 건조수축은 5%, 중성화 저항성은 30% 감소 및 압축강도는 10% 정도 향상 효과가 나타났다.

Keywords

References

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