Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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A Study on the Quality Properties of Alkali-activated cement free Mortar using Industrial by-products

산업부산물을 사용한 알칼리 활성 무시멘트 모르타르의 품질특성에 관한 연구

  • Kwon, Yong-Hun (Dongnam Co., LTD. Research & Development Center) ;
  • Kwon, Yeong-Ho (Dept. of Architecture and Fire service Administration, Dong Yang University) ;
  • Lee, Dong-Gyu (Dongnam Co., LTD. Research & Development Center)
  • 권용훈 (동남기업(주) 중앙연구소) ;
  • 권영호 (동양대학교 건축소방행정학과) ;
  • 이동규 (동남기업(주) 중앙연구소)
  • Received : 2013.05.15
  • Accepted : 2013.06.25
  • Published : 2013.06.30
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Abstract

This study investigated quality properties of alkali activated cement free mortar using industrial by-product such as cement kiln dust(CKD), silica fume(SF) and quartz sand powder(SP) to compare with previous research about blast furnace slag(BS) and fly ash(FA). The results were as following. All materials were effective to increase compressive strength, however they showed different tendency on flowability. CKD and SP increased flowability, but on the other hand SF did not because it's blain was great difference with other materials. Flowability and compressive strength were related with grading distributions of binders because CKD, SP and SF which had small particle size filled up BS and FA. Application of industrial by-products with various grading distributions could be effective for the high early strength and flowability of alkali activated cement free mortar using BS.

산업부산물인 고로슬래그 미분말 및 플라이애시를 적용하였던 선행 연구들과 차별하여 시멘트 킬른 더스트, 실리카퓸, 규사미분말 등의 기타 산업부산물을 사용한 알칼리 활성 무시멘트 모르타르의 품질특성을 검토하고자 하였으며, 그 결과는 다음과 같다. SF 치환의 경우 Plain에 비해 유동성이 저하되었으나 강도발현에는 우수한 경향을 나타내었으며, CKD와 SP의 사용량 증가에 따라 각각 유동성 및 압축강도가 증가하였다. 유동성 증진 및 초기강도 향상에 각 결합재의 고유입도분포와 높은 상관관계를 가지는데, 이는 입자사이즈가 큰 BS 및 FA 입자사이에 입자가 작은 CKD, SF 및 SP가 공극을 충진하여 연속입도곡선을 형성하는 것에 기인한 것으로 사료된다. BS 기반 조기강도 증진용 알칼리 활성 모르타르의 초기강도 향상 및 유동성 개선을 위해서는 고유의 입도분포를 가진 기타 결합재를 치환 사용하는 것이 효과적인 것으로 판단된다.

Keywords

References

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