Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Utilization of Ready-mixed Concrete Recycling Water Mixed with Hot-rolled Slag Containing C12A7 and Application Characteristics of Cement Mortar

C12A7을 함유한 열연슬래그를 혼입한 레미콘 회수수 활용 및 시멘트 모르타르의 적용 특성

  • Kim, Young-Yeop (Department of Architectural System Engineering, Hanyang University ERICA) ;
  • Lee, Han-Seung (Department of Architectural System Engineering, Hanyang University ERICA)
  • 김영엽 (한양대학교 건축시스템공학과) ;
  • 이한승 (한양대학교 건축시스템공학과)
  • Received : 2021.02.21
  • Accepted : 2021.03.10
  • Published : 2021.03.30
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Abstract

CaO-based by-products composed of CaO, SO3, Al2O3, etc. are generally used as raw materials for CaO compounds. When applied to the recovered water of ready-mixed concrete, the hydration reaction of the powder material is accelerated and concrete performance can be improved. In this study, activated sludge was prepared to apply to the recovered water of ready-mixed concrete by mixing CaO-based hot-rolled slag(C12A7) in the recycling water of ready-m ixed concrete. Cem ent paste setting time and mortar compressive strength performance tests confirmed the effect on the hydration reaction. Therefore, the possibility of concrete application using activated sludge was confirmed.

CaO 화합물의 원료로는 일반적으로 CaO, SO3, Al2O3 등으로 구성된 CaO 기반인 산업부산물이 있다. 이러한 CaO 계 산업부산물을 레미콘의 회수수에 적용할 경우 시멘트, 플라이애시, 슬래그미분말 등의 콘크리트 분말 원료의 수화 반응이 가속화되어 콘크리트 성능을 향상시킬 수 있다. 본 연구에서는 레미콘의 회수수에 C12A7을 함유한 열연 슬래그를 혼입하여 레미콘의 회수수에 적용할 수 있는 활성슬러지를 제조하였으며, 시멘트 페이스트 응결시간 및 모르타르 압축강도 성능 테스트를 통해 수화반응에 대한 영향을 확인하고자 하였다.

Keywords

References

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