Structural Engineering and Mechanics

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Steel fibre and transverse reinforcement effects on the behaviour of high strength concrete beams

  • Cucchiara, Calogero (Dipartimento di Ingegneria Civile, Ambientale e Aeronautica, Universita di Palermo) ;
  • Fossetti, Marinella (Facolta di Ingegneria e Architettura, Universita di Enna "Kore") ;
  • Papia, Maurizio (Dipartimento di Ingegneria Civile, Ambientale e Aeronautica, Universita di Palermo)
  • Received : 2011.05.11
  • Accepted : 2012.04.16
  • Published : 2012.05.25
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Abstract

An experimental program was carried out to investigate the influence of fibre reinforcement on the mechanical behaviour of high strength reinforced concrete beams. Eighteen beams, loaded in four-point bending tests, were examined by applying monotonically increasing controlled displacements and recording the response in terms of load-deflection curves up to failure. The major test variables were the volume fraction of steel fibres and the transverse steel amount for two different values of shear span. The contribution of the stirrups to the shear strength was derived from the deformations of their vertical legs, measured by means of strain gauges. The structural response of the tested beams was analyzed to evaluate strength, stiffness, energy absorption capacity and failure mode. The experimental results and observed behaviour are in good agreement with those obtained by other authors, confirming that an adequate amount of steel fibres in the concrete can be an alternative solution for minimizing the density of transverse reinforcement. However, the paper shows that the use of different theoretical or semi-empirical models, available in literature, leads to different predictions of the ultimate load in the case of dominant shear failure mode.

Keywords

References

  1. ACI Committee 544 (1988), "Measurement of properties of fiber reinforced concrete", ACI Mat. J., Committee Report 1988b, Title 85(M58), 583-593.
  2. ACI Committee 318 (1983), "Building code requirements for reinforced concrete", American Concrete Institute, USA.
  3. ACI Committee 318 (2008), "Building Code Requirements for Structural Concrete (ACI 318-08) and Commentary", American Concrete Institute, USA.
  4. AICAP (1990), "Raccomandazioni tecniche AICAP per l'impiego del conglomerato cementizio rinforzato con fibre metalliche", L'Industria Italiana del Cemento, 11, 5-9. (In Italian)
  5. Ashour, S.A., Hasanain, G.S. and Wafa, F. (1992), "Shear behavior of high strength fiber reinforced concrete beams", ACI Struct. J., 89(2), 176-183.
  6. Campione, G., Cucchiara, C. and La Mendola, L. (2003), "Role of fibres and stirrups on the behaviour of reinforced concrete beams under flexure and shear", Proceedings of the International Conference Composites in Constructions CCC2003, Cosenza, Italy, September.
  7. Campione, G. and Mangiavillano, M.L. (2008), "Fibrous reinforced concrete beams in flexure: Experimental investigation, analytical modelling and design considerations", Eng. Struct., 30(11), 2970-2980. https://doi.org/10.1016/j.engstruct.2008.04.019
  8. Cladera, A. and Mari, A.R. (2005), "Experimental study on high-strength concrete beams failing in shear", Eng. Struct., 27(10), 1519-1527. https://doi.org/10.1016/j.engstruct.2005.04.010
  9. Cucchiara, C., La Mendola, L. and Papia, M. (2004), "Effectiveness of stirrups and steel fibres as shear reinforcement", Cement Concrete Compos., 26(7), 777-786. https://doi.org/10.1016/j.cemconcomp.2003.07.001
  10. Cucchiara, C. and Priolo, S. (2008), "Experimental investigation on high-strength fibre-reinforced concrete beams subjected to bending and shear", Graduate School in Concrete Structures, Studies and Researches Fratelli Pesenti, 28, 11-28.
  11. Colajanni, P., Recupero, A. and Spinella N. (2012), "Generalization of shear truss model to the case of SFRC beams with stirrups", Comput. Concrete, 9(3), 227-244. https://doi.org/10.12989/cac.2012.9.3.227
  12. Ding, Y., You, Z. and Jalali, S. (2011), "The composite effect of steel fibres and stirrups on the shear behaviour of beams using self-consolidating concrete", Eng. Struct., 33(1), 107-117. https://doi.org/10.1016/j.engstruct.2010.09.023
  13. Imam, M., Vandewalle, L., Mortelmans, F. and Van Gemert, D. (1995), "Shear domain of fibre-reinforced highstrength concrete beams", Eng. Struct., 19(9), 738-747.
  14. Kang, S.T., Lee, B.Y., Kim, J.K. and Kim, Y.Y. (2011), "The effect of fibre distribution characteristics on the flexural strength of steel fibre-reinforced ultra high strength concrete", Constr. Build. Mater., 25(5), 2450-2457. https://doi.org/10.1016/j.conbuildmat.2010.11.057
  15. Khuntia, M., Stojadinovic, B. and Goel, S.C. (1999), "Shear strength of normal and high-strength fiber reinforced concrete beams without stirrups", ACI Struct. J., 96(2), 282-289.
  16. Kim, D., Kim, W. and White, R. (1998), "Prediction of reinforcement tension produced by arch action in RC beams", J. Struct. Eng.-ASCE, 124(6), 611-622. https://doi.org/10.1061/(ASCE)0733-9445(1998)124:6(611)
  17. Lim, D.H. and Oh, B.H. (1999), "Experimental and theoretical investigation on the shear of steel fibre reinforced concrete beams", Eng. Struct., 21(10), 937-944. https://doi.org/10.1016/S0141-0296(98)00049-2
  18. Noghabai, K. (2000), "Beams of fibrous concrete in shear and bending: experiment and model", J. Struct. Eng.- ASCE, 126(2), 243-251. https://doi.org/10.1061/(ASCE)0733-9445(2000)126:2(243)
  19. Oh, B.H. (1992), "Flexural analysis of reinforced concrete beams containing steel fiber", J. Struct. Eng.-ASCE, 118(10), 2822-2836.
  20. Parra-Montesinos, G.J. (2006), "Shear strength of beam with deformed steel fibers", Concrete Int., AM, 28(11), 57- 66.
  21. Perez, J.L., Cladera, A., Rabunal, J.R. and Abella, F.M. (2010), "Optimal adjustment of EC-2 shear formulation for concrete elements without web reinforcement using Genetic Programming", Eng. Struct., 32(11), 3452-3466. https://doi.org/10.1016/j.engstruct.2010.07.006
  22. RILEM TC 162-TDF (2000), "Test and design methods for steel fibre reinforced concrete", Mater. Struct., 33(2), 75-81. https://doi.org/10.1007/BF02484159
  23. Russo, G., Somma, G. and Angeli, P. (2004), "Design shear strength formula for high strength concrete beams", Mater. Struct., 37(10), 680-688. https://doi.org/10.1617/14016
  24. Yakoub, H.E. (2011), "Shear prediction: steel fiber-reinforced concrete beams without stirrups", ACI Struct. J., 108 (3), 304-314.

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