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Image and Phase Analysis of Low Carbon Type Recycled Cement Using Waste Concrete Powder

폐콘크리트 미분말을 사용한 저탄소형 시멘트의 조직 및 상분석

  • 송훈 (한국세라믹기술원 에너지환경소재본부) ;
  • 신현욱 (한국세라믹기술원 에너지환경소재본부) ;
  • 이종규 (한국세라믹기술원 에너지환경소재본부) ;
  • 추용식 (한국세라믹기술원 에너지환경소재본부) ;
  • 박동천 (한국해양대학교, 해양과학기술대학, 해양공간건축학과)
  • Received : 2014.11.24
  • Accepted : 2014.12.18
  • Published : 2014.12.30

Abstract

Although the cement industry serves as the cornerstone of the construction industry by supplying one of its fundamental materials, it confronts new environmental challenges due to the problem of the $CO_2$ generated from raw materials and fuel used in the cement manufacturing process. Also, concrete structures can be decomposed and reused as construction materials. Simply in terms of the cyclic processing of $CO_2$, recycling waste concrete to manufacture recycled aggregate or recycling waste concrete powder, which is the material for cement can be considered optimally environment-friendly practices. This study contributes to the aim of manufacturing high value added materials that exploits the chemical properties of the waste concrete powder. From the research results, waste concrete powder is feasible to use to produce low carbon type recycled cement.

시멘트산업은 건설산업에의 기초소재를 공급하는 중추이지만 시멘트 제조시 고온의 소성이 필요하고 소성시의 원료 및 연료로부터 발생하는 $CO_2$와 구조물 해체시 발생하는 건설폐기물은 새로운 환경문제로 대두되고 있다. 본 연구는 폐콘크리트 미분말의 리사이클을 통해 시멘트로서 활용하기 위한 것이다. 기존의 불활성 충전재로서의 활용에서 벗어나 화학적 특성을 기반으로 배합조건을 조절하여 클링커 및 시멘트를 제조하고 미세조직 및 상분석을 실시하여 저탄소형 시멘트 개발 가능성을 타진하고자 한다. 연구결과 폐콘크리트 미분말을 활용한 저탄소형 시멘트 제조가 가능하며 유효활용을 위한 방안이 마련되어야 한다.

Keywords

References

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  2. Ahn Jiwhan et al. (2003). Manufacture of Ordinary Potland Cement Clinker Using Cement Paste of the Waste Concrete. Journal of the Ceramic Society, 40(8), 804-810. https://doi.org/10.4191/KCERS.2003.40.8.804
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Cited by

  1. A Feasibility Study on the Utilization of by-Product Sludge Generated from Waste Concrete Recycling Process vol.25, pp.3, 2016, https://doi.org/10.7844/kirr.2016.25.3.29
  2. Properties of Centrifugal Forcing Concrete Depending on Replacement Ratio of Waste Concrete Powder vol.35, pp.5, 2018, https://doi.org/10.9786/kswm.2018.35.5.444