Structural Engineering and Mechanics

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Bond strength of reinforcement in splices in beams

  • Turk, Kazim (Firat University, Civil Engineering Department) ;
  • Yildirim, M. Sukru (Trakya University, Corlu Engineering Faculty, Civil Engineering Department)
  • Received : 2003.01.14
  • Accepted : 2003.07.19
  • Published : 2003.10.25
⟨ Previous Next ⟩

Abstract

The primary aim of this study was to investigate the bond strength between reinforcement and concrete. Large sized nine beams, which were produced from concrete with approximately ${f_c}^{\prime}=30$ MPa, were tested. Each beam was designed to include two bars in tension, spliced at the center of the span. The splice length was selected so that bars would fail in bond, splitting the concrete cover in the splice region, before reaching the yield point. In all experiments, the variable used was the reinforcing bar diameter. In the experiments, beam specimens were loaded in positive bending with the splice in a constant moment region. In consequence, as the bar diameter increased, bond strength and ductility reduced but, however, the stiffnesses of the beams (resistance to deflection) increased. Morever, a empirical equation was obtained to calculate the bond strength of reinforcement and this equation was compared with Orangun et al. (1977) and Esfahani and Rangan (1998). There was a good agreement between the values computed from the predictive equation and those computed from equations of Orangun et al. (1977) and Esfahani and Rangan (1998).

Keywords

References

  1. De Larrard, F., Scahaller, I. and Fuchs, J. (1993), "Effect of bar diameter on the bond strength of passive reinforcement in high-performance concrete", ACI Mater. J., 93, 333-339.
  2. Esfahani, M.R. and Rangan, B.V. (1998), "Bond between normal strength and high-strength concrete and reinforcing bars in splices in beams", ACI Struct. J., 98, 272-280.
  3. Gambarova, G.P. and Giuriani, E. (1985), Discussion of "Fracture mechanics of bond in reinforced concrete" by Ingraffea, A.R., Gerstle, W.H., Gergely, P. and Saouma, V., J. Struct. Eng., ASCE, 1161-1163.
  4. Hamad, B.S. (1995), "Comparative bond strength of coated and uncoated bars with different rib geometries", ACI Mater. J., 579-590.
  5. Orangun, C.O., Jirsa, J.O. and Breen, J.E. (1975), "Strength of anchored bars: A re-evaluation of test data on development length and splices", Research report 154-3F, Center of Highway Research, University of Texas at Austin, Jan.
  6. Orangun, C.O., Jirsa, J.O. and Breen, J.E. (1977), "A reevaluation of test data on development length and splices", ACI J., 77, 114-122.
  7. Sagan, V.E., Gergely, P. and White, R.N. (1991), "Behaviour and design of noncontact lap splices subjected to repeated inelastic tensile loading", ACI Struct. J., 420-431.
  8. Tepfers, R. (1973), "A theory of bond applied to overlapped tensile reinforcement splices for deformed bars", Publication No. 73:2, Division of concrete structures, Chalmers University of Technology, Goteborg, 328 s.
  9. Tepfers, R. (1979), "Cracking of concrete cover along anchored deformed reinforcing bars", Magazine of Concrete Research, 106, 3-12.

Cited by

  1. Investigation of bond between lap-spliced steel bar and self-compacting concrete: The role of silica fume vol.37, pp.3, 2010, https://doi.org/10.1139/L09-159
  2. Influence of loading condition and reinforcement size on the concrete/reinforcement bond strength vol.19, pp.3, 2005, https://doi.org/10.12989/sem.2005.19.3.337
  3. An analytical study of bond strength associated with splitting of concrete cover vol.31, pp.4, 2009, https://doi.org/10.1016/j.engstruct.2008.12.008
  4. Properties of pull-out bond strength and concept to assess ultimate bond stress of NSC and HSC vol.66, pp.17, 2014, https://doi.org/10.1680/macr.14.00009
  5. Bond behavior and assessment of design ultimate bond stress of normal and high strength concrete vol.53, pp.2, 2003, https://doi.org/10.1016/j.aej.2014.03.012
  6. Influence of ground pumice powder on the bond behavior of reinforcement and mechanical properties of self-compacting mortars vol.20, pp.3, 2003, https://doi.org/10.12989/cac.2017.20.3.283
  7. Experimental evaluation of splicing of longitudinal bars with forging welding in flexural reinforced concrete beams vol.6, pp.5, 2003, https://doi.org/10.12989/acc.2018.6.5.509
  8. Development Length and Bond Behavior of Steel Bars in Steel Fiber-Reinforced Concrete in Flexural Test vol.32, pp.1, 2003, https://doi.org/10.1061/(asce)mt.1943-5533.0002979
  9. Impact of Corroded Bars and Spalling on the Bond Strength of Reinforced Concrete Structures vol.849, pp.None, 2003, https://doi.org/10.1088/1757-899x/849/1/012076
  10. Bond strength of reinforcing bars in hybrid fiber-reinforced SCC with binary, ternary and quaternary blends of steel and PVA fibers vol.54, pp.4, 2021, https://doi.org/10.1617/s11527-021-01733-7
  11. Investigation of the Impact of Graphene Nanoplatelets (GnP) on the Bond Stress of High-Performance Concrete Using Pullout Testing vol.14, pp.22, 2021, https://doi.org/10.3390/ma14227054