Computers and Concrete

  • 제11권1호
  • /
  • Pages.21-37
  • /
  • 2013
  • /
  • 1598-8198(pISSN)
  • /
  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Shear behavior of reinforced HPC beams made of a low cement content without shear reinforcements

  • Tang, Chao-Wei (Department of Civil Engineering & Engineering Informatics, Cheng Shiu University) ;
  • Chen, Yu-Ping (Graduate Institute of Construction Engineering, Cheng Shiu University) ;
  • Chen, How-Ji (Department of Civil Engineering, National Chung-Hsing University) ;
  • Huang, Chung-Ho (Department of Civil Engineering, Dahan Institute of Technology) ;
  • Liu, Tsang-Hao (AU Optronics Corporation)
  • 투고 : 2011.03.23
  • 심사 : 2012.02.28
  • 발행 : 2013.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

High-performance concrete (HPC) usually has higher paste and lower coarse aggregate volumes than normal concrete. The lower aggregate content of HPC can affect the shear capacity of concrete members due to the formation of smooth fractured surfaces and the subsequent development of weak interface shear transfer. Therefore, an experimental investigation was conducted to study the shear strength and cracking behavior of full-scale reinforced beams made with low-cement-content high-performance concrete (LcHPC) as well as conventional HPC. A total of fourteen flexural reinforced concrete (RC) beams without shear reinforcements were tested under a two-point load until shear failure occurred. The primary design variables included the cement content, the shear span to effective depth ratio (a/d), and the tensile steel ratio (${\rho}_w$). The results indicate that LcHPC beams show comparable behaviors in crack and ultimate shear strength as compared with conventional HPC beams. Overall, the shear strength of LcHPC beams was found to be larger than that of corresponding HPC beams, particularly for an a/d value of 1.5. In addition, the crack and ultimate shear strength increased as a/d decreased or ${\rho}_w$ increased for both LcHPC beams and HPC beams. This investigation established that LcHPC is recommendable for structural concrete applications.

키워드

참고문헌

  1. ACI Committee 318 (2008), Building code requirements for structural concrete (ACI 318-08) and commentary, American Concrete Intitute, Farmington Hills, Mich.
  2. Bentz, E.C. (2005), "Empirical modeling of reinforced concrete shear strength size effect for members without stirrups", ACI Struct. J., 102(2), 232-241.
  3. Chen, H.J., Yang, T.Y. and Tang, C.W. (2009), "Strength and durability of concrete in hot spring environments", Comput. Concrete, 6(4), 269-280. https://doi.org/10.12989/cac.2009.6.4.269
  4. Cho, S.H. (2003), "Shear strength prediction by modified plasticity theory for short beams", ACI Struct. J., 100(1), 105-112.
  5. Choi, K.K., Park, H.G. and Wight, J.K. (2007), "Unified shear strength model for reinforced concrete beams-Part I: Development", ACI Struct. J., 104(2), 142-152.
  6. ENV 1992-1-1: Eurocode No. 2. (1991), Design of concrete structures- Part 1: General rules and rules for building, Commission of the European Communities.
  7. Hassan, A.A.A., Hossain, K.M.A. and Lachemi, M. (2008), "Behavior of full-scale self-consolidating concrete beams in shear", Cement Concrete Comp., 30(7), 588-596. https://doi.org/10.1016/j.cemconcomp.2008.03.005
  8. Mehta, P.K. and Monteiro, P.J.M. (2006), Concrete: Microstructure, properties, and materials (International Editions 2006), McGraw-Hill Education (Asia), Taiwan.
  9. Park, R. and Paulay, T. (1975), Reinforced concrete structures, John Wiley & Sons.
  10. Somayaji, S. (2001), Civil engineering materials, Prentice Hall, Upper Siddle River, New Jersey.
  11. Tang, C.W., Yen, T. and Chen, H.J. (2009), "Shear behavior of reinforced concrete beams made with sedimentary lightweight aggregate without shear reinforcement", J. Mater. Civil Eng.-ASCE, 21(12), 730-739. https://doi.org/10.1061/(ASCE)0899-1561(2009)21:12(730)
  12. Tang, C.W. (2010), "Hydration properties of cement pastes containing high-volume mineral admixtures", Comput. Concrete, 7(1), 17-38. https://doi.org/10.12989/cac.2010.7.1.017
  13. Taylor, H.P.J. (1972), "Shear strength of large beams", J. Struct. Div.-ASCE, 98(11), 2473-2490.
  14. Rebeiz, K.S. (1999), "Shear strength prediction for concrete members", J. Struct. Eng.-ASCE, 125(3), 301-308. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:3(301)
  15. Russell, H.G. (1999), "ACI defines high performance concrete", Concrete Int., 21(2), 56-57.
  16. Russo, G., Somma, G. and Mitri, D. (2005), "Shear strength analysis and prediction for reinforced concrete beams without shear stirrups", J. Struct. Eng.-ASCE, 131(1), 66-74. https://doi.org/10.1061/(ASCE)0733-9445(2005)131:1(66)
  17. Zarais, P.D. and Papadakis, G.C. (2001), "Diagonal shear failure and size effect in RC beams without web reinforcement", J. Struct. Eng.-ASCE, 127(7), 733-742. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:7(733)
  18. Zararis, P.D. (2003), "Shear strength and minimum shear reinforcement of reinforced concrete slender beams", ACI Struct. J., 100(2), 203-214.
  19. Zsutty, T.C. (1971), "Shear strength prediction for separate categories of simple beam test", ACI J., 68(2), 138-143.