DOI QR코드

DOI QR Code

Engineering Properties of HPFRCC Depending on Various Fiber Mixing Ratio and ERCO Contents

섬유혼입비 및 ERCO 혼입율 변화에 따른 HPFRCC의 공학적 특성

  • Received : 2016.08.02
  • Accepted : 2016.12.29
  • Published : 2017.02.28

Abstract

Recently, because of increasing terrorisms, and accidents related with explosion, concerns on safety of human in building structures have been increased globally. Keeping up with this global issue, the research on high performance fiber reinforced cementitious composites (HPFRCC) with improved toughness due to the fiber reinforcement has been conducted in order to compensate the drawbacks of currently used concrete materials with low tensile strength and brittle failure mode. From the former research, some problems of severe autogenous shrinkage due to low water-to-binder ratio came up, and to achieve the efficient anti-explosive performance the optimizing proportion between short steel (SS) fiber and long organic (OL) fiber for combined fiber-reinforcement were required. Therefore, in this research, before applying HPFRCC on test-bed in military facility, the influence of various proportions of SS and OL and ERCO dosages on engineering properties of HPFRCC was analyzed. From the experiment, considering appropriate workability, strength, and autogenous shrinkage reducing, 1 to 1.5 of SS to OL and 0.5 % of ERCO addition were evaluated as the most appropriate conditions.

Keywords

Acknowledgement

Supported by : 국토교통부

References

  1. Balaguru, P., & Shah, S. (1992). Fiber-reinforced Cement Composites. 1st ed,. New York, McGraw-Hill.
  2. Han, MC., & Kim, TC. (2012). Autogenous Shrinkage of the High Strength Concrete Using Emulsified Waste Cooking Oil, Journal of the Architectural Institute of Korea Structure & Construction, 28(9), 139-146. https://doi.org/10.5659/JAIK_SC.2012.28.9.139
  3. Han, MC., & Woo, DH. (2013). Effect of Emulsified Refine Cooking Oil on the Engineering Properties of High Volume Admixture Concrete, Journal of the Architectural Institute of Korea Structure & Construction, 29(9), 57-64. https://doi.org/10.5659/JAIK_SC.2013.29.9.57
  4. Han, MC., Han, DY., & Lee, MH. (2015). Effect of Emulsified Refine Cooking Oil and Expandable Microsphere on Durability of High-Volume Blast Furnace Slag Concrete, Journal of The Korean Institute of Building Construction, 15(6), 615-620. https://doi.org/10.5345/JKIBC.2015.15.6.615
  5. Hemmati, A., Kheyroddin, A., Sharbatdar, M., Park, Y., & Abolmaali, A. (2016). Ductile behavior of high performance fiber reinforced cementitious composite (HPFRCC) frames, Construction and Building Materials, 115, 681-689. https://doi.org/10.1016/j.conbuildmat.2016.04.078
  6. Kuder, KG., Ozyurt, N., Mu, EB., & Shah, SP. (2007). Rheology of Fiber-Reinforced Cementitious Materials, Cement and Concrete Research, 37(2), 191-199. https://doi.org/10.1016/j.cemconres.2006.10.015
  7. Ku, DO., Kim, SD., Kim, HS., Choi, KK. (2014). Flexural Performance Characteristics of Amorphous Steel Fiber Reinforced Concrete, Journal of the Korea Concrete Institute, 26(4), 483-489. https://doi.org/10.4334/JKCI.2014.26.4.483
  8. Lee, JT., & Han, CG. (2015). Physical Properties of HPFRCC Using Fiber Combinations According to Change of W/B and Fiber Replacement Ratio, Journal of the Architectural Institute of Korea Structure & Construction, 31(11), 71-78. https://doi.org/10.5659/JAIK_SC.2015.31.11.71
  9. Li, V., & Leung, C. (1992). Steady-state and Multiple Cracking of Short Random Fiber Composites, Journal of Engineering Mechanics, 118(11), 2246-2264. https://doi.org/10.1061/(ASCE)0733-9399(1992)118:11(2246)
  10. Mindess, S., Young, J., & Darwin, D. (2002). Concrete. 2nd ed,. New Jersey, Prentice Hall.
  11. Park, YJ. (2016). Field Applications and Engineering Properties of Combined Fiber Reinforced Concrete, Master's Course Thesis, CheongJu University, 92.