Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Properties of Portland Cement Clinker Using Polysilicon Sludge

폴리실리콘 슬러지를 원료로 사용한 포틀랜드 시멘트 클링커의 특성

  • Lee, Seung-Heun (Department of materials Engineering, Kunsan national University) ;
  • Lee, Se-Jin (Department of materials Engineering, Kunsan national University) ;
  • Woo, Yang-Yee (Department of materials Engineering, Kunsan national University) ;
  • Park, Jeoung-Soo (Department of materials Engineering, Kunsan national University)
  • 이승헌 (국립군산대학교 신소재공학과) ;
  • 이세진 (국립군산대학교 신소재공학과) ;
  • 우양이 (국립군산대학교 신소재공학과) ;
  • 박정수 (국립군산대학교 신소재공학과)
  • Received : 2014.12.18
  • Accepted : 2014.12.26
  • Published : 2014.12.30
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Abstract

This study reviewed the usability of sludge, a material that is additionally created when polysilicon (a solar light material) is produced, as the raw material for cement clinker. It was evaluated that when cement clinker is produced, the chloric component of polysilicon acted as a mineralizer in the firing process. In addition, the physical features of the produced cement were measured. The setting time of the produced cement was reduced as the amount of content of polysilicon sludge increased. Such results were drawn because the chloric component acted as hydration accelerator and enhanced the dissolution of calcium hydroxide that was formed by hydration of $C_3S$. Furthermore, for such reason, on the day 1, the compression strength of mortar increased as the content of polysilicon sludge increased. In day 3, 7, and 28, the tendency in which the compression strength increasing up to 5% of the amount of added polysilicon sludge was shown. It is because when clinker was produced, the chloric component increased the amount of $C_3S$ mineral created, thus enhancing the compression strength after day 3.

본 연구는 태양광 소재인 폴리실리콘 제조시 부산되는 슬러지를 시멘트 클링커의 원료로서 사용 가능성에 대해 검토하였다. 시멘트 클링커를 제조 할 때, 폴리실리콘의 염소 성분이 소성과정에서 광화제로 작용하여 f-CaO 생성량을 낮추고, 시멘트 클링커 광물 중 $C_3S$ 생성량을 증가시킨 것으로 평가되었다. 또한 제조한 시멘트의 물리적 특성을 측정하였다. 제조 시멘트는 폴리실리콘 슬러지 함유량이 증가할수록 응결 시간을 단축시켰다. 이러한 결과는 염소 성분이 수화촉진제로써 작용해서 $C_3S$의 수화에 의해서 생성된 수산화칼슘의 용해를 촉진하기 때문이다. 또한 이러한 이유로 재령 1일에서의 모르타르 압축강도는 폴리실리콘 슬러지 함유량이 많을수록 컸다. 재령 3, 7, 28일 압축강도는 폴리실리콘 슬러지 첨가량 5wt%까지 증진되는 경향을 나타냈다. 이러한 이유는 클링커 제조 시 염소 성분이 $C_3S$ 광물 생성량을 증가시킴으로 3일 이후 압축강도를 증진시킨 것이다.

Keywords

References

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