한국건설순환자원학회논문집 (Journal of the Korean Recycled Construction Resources Institute)

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

DOI QR Code

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

Utilization of Ready-mixed Concrete Recycling Water Mixed with Hot-rolled Slag Containing C12A7 and Application Characteristics of Cement Mortar

  • 김영엽 (한양대학교 건축시스템공학과) ;
  • 이한승 (한양대학교 건축시스템공학과)
  • Kim, Young-Yeop (Department of Architectural System Engineering, Hanyang University ERICA) ;
  • Lee, Han-Seung (Department of Architectural System Engineering, Hanyang University ERICA)
  • 투고 : 2021.02.21
  • 심사 : 2021.03.10
  • 발행 : 2021.03.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

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.

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.

키워드

참고문헌

  1. Cho, K.J. (2006). An Experimental Study on Characteristics of Concrete using Ready Mixed Concrete Sludge Water, Master's Thesis, Kangnung-Wonju National University.
  2. Jang, B.K. (1998). Translated by Yongmu Lim, Cement Material Chemistry, Chonnam National University Press.
  3. Jung, D.W., Jin, G.H., Lee, M.H., Lee, S.H., Han, C.G. (2003). "Properties of cement mortar according to the kinds and adding ratio of recycling water-stabilizing agent", Proceedings of the Korea Concrete Institute,15(2), 477-480 [in Korean].
  4. Kim, H.S, Han, K.H. (1997). Rapid aging technology of converter slag, The Korean Institute Resources Recycling Symposium, New Construction Material Converter Slag, 97-106 [in Korean].
  5. Korea Federation of Readymixed Concrete Industry Co-operatives (2019). Statistics Yearbook of Remicon.
  6. Korea Science and Engineering Foundation (1993). A Study on the Application Cation Method of Liquid Waste of R.M.C., 82-117.
  7. Korean Agency for Technology and Standards, KS L 510 (1996). Testing Method for Setting Time of Hydraulic Cement by Gilmour Needles, Korean Standards Association, Seoul, Korea.
  8. Korean Agency for Technology and Standards, KS L 5107 (2001). Testing Method for Autoclave Expansion of Portland Cement, Korean Standards Association, Seoul, Korea.
  9. Korean Agency for Technology and Standards, KS LISO679 (2006). Methods of Testing Cements Determination of Strength, Korean Standards Association, Seoul, Korea.
  10. Kwon, C.W., Kong, T.W., Lee, H.B., Son, H.J., Ryu, S.L. (2014). "Property of a change on slump & air content according elapsed time in concrete using recycled water of ready mixed concrete," Proceeding of Korea Concrete Institute, Korea Concrete Institute, Jeju island, Korea, 26(1), 605-606 [in Korean].
  11. Lea, F.M., Hewlett, P.C. (2010). Lea's Chemistry of Cement and Concrete, 4th Ed., Butterworth-Heinemann, U. S, 723-727.
  12. Majumdar, A.J., Singh, B., Edmonds, R.N. (1989). Hydration of mixture of C12A7 and granulated blast furnace slag, Cement and Concrete Research, 19(6), 848-856. https://doi.org/10.1016/0008-8846(89)90097-5
  13. Moon, H.Y. (2001). Properties of Cement Matrix Mixed with Ready Mixed Concrete Sludge and Residual Water, Hanyang University of Korea, ICCMC/ IBST, 519-525.
  14. Shin, H.C. (2002). Reuse of Ready Mixed Concrete Wast e Washed Water to Improve the Properties of Ground Granulated Blast Furnace Slag Concretete, Ph.D Thesis, Hanyang University.
  15. Yoo, S.Y, Koo, J.S, Kim, J.M. (2016). Utilization status of calcium aluminate based ladle furnace slag powder, Journal of the Korean Recycled Construction Resources Institute, 11(2), 35-39 [in Korean].
  16. Yoon, G.W., Ru, H.G., Han, C.G., Bahn, H.Y. (1993). "A fundamental study on the reuse of recycling water of ready mixed concrete such as concrete water", Proceedings of the Architectural Institute of Korea, 13(1), 409-412 [in Korean].
  17. Zhen, G., Lu, X., Cheng, X., Chen, H., Yan, X., Zhao, Y. (2012). Hydration process of the aluminate 12CaO7Al2O3-assisted portland cement-based solidification/stabilization of sewage sludge, Construction and Building Materials, 30, 675-681. https://doi.org/10.1016/j.conbuildmat.2011.12.049