Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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An Experimental Study on the Minimum Steel Ratio of Reinforced Concrete Beam According to Replacement Ratio of Recycled Aggregates

순환골재 치환률에 따른 철근콘크리트보의 최소철근비에 관한 실험적 연구

  • 신명환 (금오공과대학교 건축학부) ;
  • 이호경 (금오공과대학교 건축학부) ;
  • 백승민 (금오공과대학교 건축학부) ;
  • 김우석 (금오공과대학교 건축학부) ;
  • 곽윤근 (금오공과대학교 건축학부)
  • Received : 2015.07.01
  • Accepted : 2016.06.23
  • Published : 2016.07.30
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Abstract

The purpose of this experimental study is to evaluate flexural behavior of reinforced concrete beams using Recycle Coarse Aggregate (RCA) with the Minimum Reinforcement Ratio (M.R.R) specified in KBC 2009 code equation. In the experiment, nine beam specimens fixed with ${\rho}=0.00352$ and design compressive strength of concrete (32MPa) were substituted with 0%, 30%, 50% of RCA and were used with 100%, 75%, 50% of M.R.R. The test value compared with the theoretical value has enough safety margin although theoretical value compared with the code calculation value has not enough safety margin when it is M.R.R of 75% and 50%. Howerever, theoretical value compared with code calculation value has enough safety margin at the M.R.R of 100%.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

  1. Ho, J. C. M., Kwan, A. K. H. & Pam, H. J.(2004). Minimum flexural ductility design of high-strength concrete beams. Magazine of Concrete Research, 56(1), 13-22. https://doi.org/10.1680/macr.2004.56.1.13
  2. Jeon, S. J., Kim, T. H., Kang, S. D., Lee, W. J., Seo, S. Y. & Yoon, S. J.(2005). Flexural Behavior of Reinforced Concrete Beams Using Recycled Aggregates. Korea Institute for Structural Maintenance and Inspection, 9(2), 167-172.
  3. Ji, S. K., Yun, H. D., Kim, S. W. & Lee, E. Y.(2007). Flexural Performance of Reinforced Concrete Beams with Recycled Aggregates Suffering from Sustained Load. Korea Institute for Structural Maintenance and Inspection, 11(5), 135-143
  4. Kim, S. H., Han, B. S., Ahn, J. M. & Shin, S. W.(2002). Flexural Behaviors of Reinforced Concrete Beam Containing Recycled Coarse Aggregate. Journal of the Architectural Institute of Korea, 22(1), 83-86
  5. Kim, Y. C., Baek, S. M., Kim, W. S., Kang, H. K. & Kwak, Y. K.(2014). An Experimental Study on Flexural Behavior of Steel Fiber Reinforced Concrete Beams Using Recycled Coarse Aggregates. Journal of the Architectural Institute of Korea, 30(3), 39-48
  6. Lee, J. Y. & Yoon, S. H.(2003). Evaluation of the minimum shear reinforcement ratio of reinforced concrete member. Journal of Korea Concrete Institute, 16(1), 43-53.
  7. Lee, Y. O., Kim, S. W., Yun, H. D., Kim, K. Y., Choi, K. Y., Kang, S. J. & Kim, D. J.(2005). Flexural Behavior and Tension Lap Splice Characteristics of Reinforced Concrete Beams with Recycled Sands. Journal of the Architectural Institute of Korea, 25(1), 429-432
  8. Levi, F.(1985). On minimum reinforcement in concrete structures. ASCE Journal of Structural Engineering, 111(12), 2791-2796. https://doi.org/10.1061/(ASCE)0733-9445(1985)111:12(2791)
  9. Ministry of Environment(2014). Construction Waste Recycling Promotion Act.
  10. Moon, D. Y., Park, S. J & Kang, T. S. (2014). A study on the flexural minimum reinforcement for prevention of brittle failure specified in KCI and EN codes. Journal of Korea Concrete Institute, 26(2), 211-218. https://doi.org/10.4334/JKCI.2014.26.2.211
  11. Sim, J. S., Park, C. W., Park, S. J & Kim, Y. J.(2006). Characterization of compressive strength and elastic modulus of recycled aggregate concrete with respect to replace to replacement ratio. Journal of Korea Society Civil Engineers, 26(1A), 213-218
  12. Stephen J, S., Richard, B., & Bijan, K.(2010). Making sense of minimum flexural reinforcement requirements for reinforced concrete members. Precast Prestressed Concrete Institute, 55(3), 64-85.
  13. Yeo, J. D., Kim, W. S., Hong, S. G., Kang, H. K. & Kwak, Y. G.(2012). A Study on the Flexural Behavior of High Strength Reinforced Concrete Beams Using Recycled Aggregates. Journal of the Architectural Institute of Korea, 28(3), 23-30
  14. Yoon, D. H.(2005). Ductility evaluation og high-strength beam member used by ultra-high-strength reinforcing bar. Master Thesis, Kumoh National Institute of Technology.
  15. Yu, S. O. & Heo, Y.(2010). A proposal of minimum reinforcement of flexural members considering size effect. International Journal of Safety, 25(2), 128-136.