DOI QR코드

DOI QR Code

Numerical modelling of the pull-out response of inclined hooked steel fibres

  • Georgiadi-Stefanidi, Kyriaki (Laboratory of Structural Analysis and Design, Department of Civil Engineering, University of Thessaly) ;
  • Panagouli, Olympia (Laboratory of Structural Analysis and Design, Department of Civil Engineering, University of Thessaly) ;
  • Kapatsina, Alexandra (Laboratory of Structural Analysis and Design, Department of Civil Engineering, University of Thessaly)
  • Received : 2015.03.16
  • Accepted : 2015.07.10
  • Published : 2015.06.25

Abstract

Steel fibre reinforced concrete (SFRC) is an anisotropic material due to the random orientation of the fibres within the cement matrix. Fibres under different inclination angles provide different strength contribution of a given crack width. For that the pull-out response of inclined fibres is of great importance to understand SFRC behaviour, particularly in the case of fibres with hooked ends, which are the most widely used. The paper focuses on the numerical modelling of the pull-out response of this kind of fibres from high-strength cementitious matrix in order to study the effects of different inclination angles of the fibres to the load-displacement pull-out curves. The pull-out of the fibres is studied by means of accurate three-dimensional finite element models, which take into account the nonlinearities that are present in the physical model, such as the nonlinear bonding between the fibre and the matrix in the early stages of the loading, the unilateral contact between the fibre and the matrix, the friction at the contact areas, the plastification of the steel fibre and the plastification and cracking of the cementitious matrix. The bonding properties of the fibre-matrix interface considered in the numerical model are based on experimental results of pull-out tests on straight fibres.

Keywords

References

  1. Armelin, H. and Banthia, N. (1997), "Predicting the flexural postcracking performance of steel fibre reinforced concrete from the pull-out of single fibres", ACI. Mater. J., 94(1), 18-31.
  2. Alwan, J.M., Naaman A.E. and Guerrero, P. (1999), "Effect of mechanical clamping on the pull-out response of hooked steel fibres embedded in cementitious matrices", Concrete. Sci. Eng., 1(1), 15-25.
  3. Balaguru, P.N., Narahari, R. and Patel, M. (1992), "Flexural toughness of steel fibre reinforced concrete", ACI. Mater. J., 89(6), 541-546.
  4. Banthia, N. and Trottier, J.F. (1994), "Concrete reinforced with deformed steel fibres, part I: bond-slip mechanisms", ACI. Mater. J., 91(5), 435-446.
  5. Bartos, P.J.M. and Duris, M. (1994), "Inclined tensile strength of steel fibres in a cement-based composite", Composites, 25(10), 945-952. https://doi.org/10.1016/0010-4361(94)90110-4
  6. Chanvillard, G. and Aitcin, P.C. (1996), "Pull-out behavior of corrugated steel fibres", Adv. Cement. Based. Mater., 4(1), 28-41.
  7. Cunha, V.M.C.F, Bartos, J.A.O. and Cruz, J.S. (2007), "Pull-out behavior of hooked-end steel fibres in self-compacting concrete", Report 07-DC/E06, Universidate do Minho.
  8. Dupont, D. and Vanderwalle, L. (2005), "Distribution of steel fibres in rectangular sections", Cement. Concrete. Comp., 27(3), 391-398. https://doi.org/10.1016/j.cemconcomp.2004.03.005
  9. Ezeldin, S. and Lowe, S.R. (1991), "Mechanical properties of steel fibre reinforced rapid-set materials", ACI. Mater. J., 88(4), 384-389.
  10. Georgiadi-Stefanidi, K., Mistakidis, E., Pantousa, D. and Zygomalas, M. (2010a), "Numerical modelling of the pull-out of hooked steel fibres from high-strength cementitious matrix, supplemented by experimental results", Constr. Build. Mater., 24(12), 2489-2506. https://doi.org/10.1016/j.conbuildmat.2010.06.007
  11. Georgiadi-Stefanidi, K., Mistakidis, E., Perdikaris, P. and Papatheocharis, T. (2010b), "Numerical simulation of tested reinforced concrete beams strengthened by thin fibre-reinforced cementitious matrix jackets", Earthq. Struct., 1(4), 345-370. https://doi.org/10.12989/eas.2010.1.4.345
  12. Kangaj, C.M., Inglis, H.M., Pietra, F. and Kok, S. (2014), "Numerical modelling of the pull-out of hooked-end steel fibre from epoxy matrix", Proceedings of the 9th South African Conference on Computational and Applied Mechanics, Somerset West, January.
  13. Laranjeira, F., Aguado, A. and Molins, C. (2010a), "Predicting the pullout response of inclined straight steel fibres", Mater. Struct., 43(6), 875-895. https://doi.org/10.1617/s11527-009-9553-4
  14. Laranjeira, F., Molins, C. and Aguado, A. (2010b), "Predicting the pullout response of inclined hooked steel fibres", Cement. Concrete. Res., 40(10), 1471-1487. https://doi.org/10.1016/j.cemconres.2010.05.005
  15. Lee, Y., Kang, S.T. and Kim, J.K. (2010), "Pullout behaviour of inclined steel fibre in an ultra-high strength cementitious matrix", Constr. Build. Mater., 24(10), 2030-2041. https://doi.org/10.1016/j.conbuildmat.2010.03.009
  16. Li, C.Y. and Mobasher, B. (1998), "Finite element simulations of fibre pull-out toughening in fibre reinforced cement based composites", Adv. Cement. Based. Mater., 7(3-4), 123-132. https://doi.org/10.1016/S1065-7355(97)00087-4
  17. Mobasher, B. and Li, C.Y. (1995), "Modelling of stiffness degradation of the interfacial zone during fibre debonding", Compos. Eng., 5(10-11), 1349-1365. https://doi.org/10.1016/0961-9526(95)00056-S
  18. Pailleve, M., Buil, M. and Serrano, J.J. (1989), "Effect of fibre addition on the autogenous shrinkage of silica fume concrete", ACI. Mater. J., 86(2), 139-144.
  19. Papanikolaou, V.K. and Kappos, A.J. (2007), "Confinement-sensitive plasticity constitutive model for concrete in triaxial compression", Int. J. Solids. Struct., 44(21), 7021-7048. https://doi.org/10.1016/j.ijsolstr.2007.03.022
  20. Pompo, A., Stupac, P.R., Nicolais, L. and Marchese, B. (1996), "Analysis of steel fibre pull-out from a cement matrix using video photography", Cement. Concrete. Comp., 18(1), 3-8.
  21. Ramakrishnan, V., Wu, G.Y. and Hosalli, G. (1989), "Flexural behaviour and toughness of fibre reinforced concretes", Transportation Research Record, 1226, 69-77.
  22. Robins, P., Austin, S. and Jones, P. (2002), "Pull-out behaviour of hooked steel fibres", Mater. Struct., 35(7), 434-442. https://doi.org/10.1007/BF02483148
  23. Shannag, M.J., Brincker, M. and Hansen, W. (1996), "Interfacial (fibre-matrix) properties of high-strength mortar (150 MPa) from fibre pull-out", ACI. Mater. J., 93(5), 1-7.
  24. Soetens, T., Van Geysel, A., Matthys, S. and Taerme, L. (2013), "A semi-analytical model to predict the pull-out behavior of inclined hooked-end steel fibres", Constr. Build. Mater., 43, 253-265. https://doi.org/10.1016/j.conbuildmat.2013.01.034
  25. Sujivorakul, C., Waas, A.M. and Naaman, A.E. (2000), "Pull-out response of a smooth fiber with an end anchorage", J. Eng. Mech. - ASCE., 126(9), 986-993. https://doi.org/10.1061/(ASCE)0733-9399(2000)126:9(986)
  26. Tsai, J.H., Patra, A. and Wetherhold, R. (2005), "Finite element simulation of shaped ductile fibre pull-out using a mixed cohesive zone/friction interface model", Compos. Part. A. - Appl. S., 36(6), 827-838. https://doi.org/10.1016/j.compositesa.2004.10.025
  27. Zhan, Y. and Meschke, G. (2014), "Analytical model for the pull-out behaviour of straight and hooked-end steel fibres", J. Eng. Mech. - ASCE., 140(12).