Development of an ECC(Engineered Cementitious Composite) Designed with Ground Granulated Blast Furnace Slag

고로슬래그미분말이 혼입된 ECC(Engineered Cementitious Composite)의 개발

  • Kim, Yun-Yong (Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Jeong-Su (Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Ha, Gee-Joo (School of Architecture, Kyungil University) ;
  • Kim, Jin-Keun (Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
  • 김윤용 (한국과학기술원 건설및환경공학과) ;
  • 김정수 (한국과학기술원 건설및환경공학과) ;
  • 하기주 (경일대학교 건축학부) ;
  • 김진근 (한국과학기술원 건설및환경공학과)
  • Published : 2006.02.28


This paper presents both experimental and analytical studies for the development of an ECC(Engineered Cementitious Composites) using ground granulated blast furnace slag(slag). This material has been focused on achieving moderately high composite strength while maintaining high ductility, represented by strain-hardening behavior in uniaxial tension. In the material development, micromechanics was adopted to properly select optimized range of the composition based on steady-state cracking theory and experimental studies on matrix, and interfacial properties. A single fiber pullout test and a wedge splitting test were employed to measure the bond properties of the fiber in a matrix and the fracture toughness of mortar matrix. The addition of the slag resulted in slight increases in the frictional bond strength and the fracture toughness. Subsequent direct tensile tests demonstrate that the fiber reinforced mortar exhibited high ductile uniaxial tension behavior with a maximum strain capacity of 3.6%. Both ductility and tensile strength(~5.3 MPa) of the composite produced with slag were measured to be significantly higher than those of the composite without slag. The slag particles contribute to improving matrix strength and fiber dispersion, which is incorporated with enhanced workability attributed to the oxidized grain surface. This result suggests that, within the limited slag dosage employed in the present study, the contribution of slag particles to the workability overwhelms the side-effect of decreased potential of saturated multiple cracking.


  1. 김윤용, '습식스프레이 공법으로 타설된 고인성 섬유 보강 모르타르(ECC)의 역학적 특성과 보수 성능', 콘크리트학회 논문집, 15권 3호, 2003. 6, pp.462-469
  2. Li, V. C. and Wu, H C., 'Conditions for pseudo strain-hardening in fiber reinforced brittle matrix composites', Journal Applied Mechanics Review, Vol.45, No.8, 1992, pp.390-398
  3. 김윤용, 김정수, 김희산, 김진근, '섬유 모르타르 경계면과 모르타르의 역학적 특성에 미치는 고로슬래그미분말의 영향', 대한토목학회 학술발표회논문집, 2004. 10, pp.546-551
  4. 김윤용, 김정수, 김희신, 김진근, 하기주, '마이크로역 학에 의하여 제조된 고인성 섬유복합 모트타르의 역학적 특성', 한국콘크리트학회 봄 학술발표회 논문집, 16권 1호, 2004. 5, pp.336-339
  5. Li, V. C., Wu, C., Wang, S., Ogawa, A, and Saito, T., 'Interface tailoring for strain-hardening PVA-ECC', ACI Materials Journal, Vol.99, No.5, 2002, pp.463-472
  6. Lin, Z., Kanda, T., and Li, V. C., 'On interface property characterization and performance of fiber reinforced cementitious composites', Journal of Concrete Science and Engineering, RILEM, Vol.1, 1999, pp.173 - 184
  7. Kanda, T. and Li, V. C., 'A new micromechanics design theory for pseudo strain hardening cementitious composite', Journal of Engineering Mechanics, ASCE, Vol.125, No.4, 1999, pp.373-381
  8. 양승규, '혼화재를 첨가한 시멘트의 레올로지 특성', 한국콘크리트학회 봄학술발표회논문집, 15권 1호, 2003. 5, pp.271-276
  9. Katz, A and Li, V. C., 'A special technique for determining the bond strength of microfibers in cement matrix by pull-out test', Journal of Material Science Letter, Vol.15, 1996, pp.1821-1823
  10. 김윤용, 김정수, 김희신, 김진근, 하기주, '마이크로역학에 의하여 제조된 고인성 섬유복합 모르타르의 역학적 특성', 콘크리트학회 논문집, 17권 5호, 2005. 10, pp.707-714
  11. Kanda, T. and Li, V. C, 'Interface Property and Apparent Strength of High-strength Hydrophilic Fiber in Cement Matrix', ASCE Journal of Materials in Civil Engineering, Vol.10, No.1, 1998, pp.5-13
  12. Yun-Yong Kim, Jeong-Su Kim, Jin-Keun Kim, and Gee-Joo Ha, 'Wet-Mix Shotcreting Application of High Ductile Fiber Reinforced Mortar Designed by Optimizing Mix Proportion', In Proceedings of the Conference of Korea Concrete Institute, Vol.16, No.2, 2004. 11, pp.581-584

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