Engineering Performance of a Rapid Hardening Hydraulic Binder with Hybrid Fiber

Li, Mao;Kim, Jin-Man;Choi, Sun-Mi

  • 투고 : 2016.04.12
  • 심사 : 2016.06.09
  • 발행 : 2016.06.20


The fundamental performance of any construction material should cover at least two phases: safety and serviceability. Safety commonly represents adequate strength, while serviceability encompasses the control of cracking and deflections at service loads. With respect to rapid hydraulic binders as a construction material, the above two phases should also be considered. Recent research on rapid cooling ladle furnace slag (RC-LFS) has drawn much attention, particularly given that it shows remarkable rapid hydraulic ability to pulverize to a fineness of $6,300cm^2/g$. This industrial byproduct could contribute to developing the sustainability of the rapidly hardening cementitious material system. This paper aims to expand upon the applicability of an RC-LFS-based binder that is composed of two parts. It also seeks to illustrate the engineering performance of an RC-LFS-based hybrid fiber-reinforced composite and to increase the strength of the RC-LFS-based composite. Each step of this experiment followed ASTM standards. The engineering performance, in both fresh state and hardening state, was tested and discussed in this paper. According to the experimental results for fresh concrete, the air content increased following the addition of polypropylene fiber. For hardened concrete, the toughness and strength improved following the addition of a hybrid fiber. The hybrid fiber mixture, which contains 0.75% of steel fiber and 0.25% of polypropylene fiber, shows even better engineering performance than other mixtures.


rapid hardening cement;rapid cooling LFS;hybrid fiber reinforced mortar


  1. Torgal FP, Jalali S, Labrincha J, John VM. Eco-efficient concrete. 1st edition. UK: Woodhead Publishing Limited; 2013. 595 p.
  2. Choi SM, Kim JH, Kim JM. Consideration on the Applicability of Ladle Furnace Slag as Construction Materials. Journal of the Korean Recycled Construction Resource Institute. 2011;11(1):9-11.
  3. Choi SM, Kim JM, Han DY, Kim JH. Hydration Properties of ladle furnace slag powder rapidly cooled by air. Construction and Building Materials. 2016 Jun;113:682-90.
  4. Setien J, Hernandez D, Gonzalez JJ, Characterization of ladle furnace basic slag for use as a construction material, Construction and Building Materials. 2009 May;23(5):1788-94.
  5. Laure PC, Frank W, Barbara L, Christian JM. Beneficial use of limestone filler with calcium sulphoaluminate cement. Construction and Building Materials. 2012 Jan;26(1):619-27.
  6. Sidney M, Young JF, Darwin D. Concrete. 2nd edition. USA: Pearson Education Inc; 2003. 95 p.
  7. Qian CX, Stroeven P. Development of hybrid polypropylene-steel fibre-reinforced concrete. Cement and Concrete Research. 2000 Jan;30(1):63-9.
  8. Bentur A, Mindess S, Vondran G. Bonding in polypropylene fibre reinforced concretes. International Journal of Cement Composites and Lightweight Concrete. 1989 Aug;11(3):153-8


연구 과제 주관 기관 : Ministry of Science, ICT, and Future Planning