Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on Fundamental Properties of Rapid Cooling Slag to Utilize as Fine Aggregate for Concrete

콘크리트용 잔골재로 활용하기 위한 습식 급랭 전로슬래그의 기초 물성에 관한 연구

  • 최연왕 (세명대학교 토목공학과) ;
  • 최병걸 (세명대학교 토목공학과) ;
  • 오세왕 (세명대학교 토목공학과) ;
  • 조봉석 (포항산업과학연구원 에너지환경연구소)
  • Received : 2015.06.22
  • Accepted : 2015.06.26
  • Published : 2015.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

Recently, development of substitution aggregate is urgently needed because aggregate shortage is continuing due to the exhaustion of natural aggregate and strict restrictions of environment in construction industry. Therefore, In this study, new processing method to solve the problems of processing method of existing converter slag, namely, rapid cooling slag produced by the rapid cooling and crushing process of the high temperature melten slag into the rotary drum and then using the cooling water, compressed air and steel ball was examined fundamental properties for utilize as fine aggregate for concrete. In addition, through this study, we propose the utilization method of rapid cooling slag as fine aggregate for concrete.

최근 건설산업에서는 천연 골재 고갈과 엄격한 환경 규제로 인하여 골재 부족 현상이 지속되고 있기 때문에 대체 골재 개발이 시급한 실정이다. 따라서 본 연구에서는 기존 전로슬래그 처리방식의 문제점을 해결하기 위한 새로운 처리방식 즉, 고온 용융슬래그를 회전식 드럼내에 투입한 다음 냉각수, 압축공기 및 강철구를 이용하여 급속 냉각, 파쇄 처리하는 공정에서 발생되는 습식 급랭 전로슬래그를 콘크리트용 잔골재로 활용하기 위하여 기초물성을 검토하였다. 또한 본 연구를 통하여 콘크리트용 잔골재로써 습식 급랭 전로슬래그의 활용 방안을 제안하고자 한다.

Keywords

References

  1. Choi, Y.W., Oh, S.R., Choi, B.K., Lee, H.H., Choi, W. (2012). A Study on Physical Properties of FINEX Slag to Utilize Fine Aggregate for Concrete, Journal of the Korean Recycled Construction Resources Institute, 7(4), 79-87 [in Korean].
  2. Choi, Y.W., Park, M.S., Lee, K.M., Bae, S.H., Kim, J.S. (2011). Evaluation of Optimum Mixing Rate and Durability of Concrete Using Water Granulated Slag Fine Aggregate, Journal of the Korean Recycled Construction Resources Institute, 6(1), 120-127 [in Korean].
  3. Han, C.K. (2002). Zero Emission in Ready Mixed Concrete Industry, Magazine of the Korea Concrete Institute, 14(2), 7-8 [in Korean].
  4. Jeon, J.G., Jin, S.J., Kim, D.H. (2013). Present Status and Recycling Technology for Slag in Korea, Magazine of RCR, 8(1), 8-10 [in Korean].
  5. Kang, S.H. (2014). R&D Issues and State-of-Art Steelmaking Slag, Magazine of RCR, 9(2), 7 [in Korean].
  6. Kim, W.K. (2014). Current State of Recycling and Properties of Steel Slag, Magazine of RCR, 9(2), 11-15 [in Korean]. https://doi.org/10.14190/MRCR.2014.9.2.011
  7. Lee, B.Y. (2014). Current Status and Recycling of By-Product from Steel Industry, Magazine of RCR, 9(3), 13-16 [in Korean]. https://doi.org/10.14190/MRCR.2014.9.3.013
  8. Yoo, J.H., Choi, J.J. (2007). Pending Problems and Potentialities of Iron Slag for Concrete Aggregate, Magazine of the Korea Concrete Institute, 17(6), 34-38 [in Korean].