Advances in concrete construction

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Behavior of tension lap spliced sustainable concrete flexural members

  • Al-Azzawi, Adel A. (Civil Engineering Department, College of Engineering, Al-Nahrain University) ;
  • Daud, Raid A. (Civil Engineering Department, College of Engineering, Al-Nahrain University) ;
  • Daud, Sultan A. (Civil Engineering Department, College of Engineering, Al-Nahrain University)
  • Received : 2019.07.24
  • Accepted : 2019.11.03
  • Published : 2020.01.25
⟨ Previous Next ⟩

Abstract

The use of spliced reinforcing bars in sustainable concrete members to manage inadequate bars length is a common practical issue which is may be due to some limitations. The lap splicing means two bars overlapped in parallel with specified length called the splice length in order to provide the required bond between the two bars. The bond between sustainable concrete and spliced steel bars is another important issue. The normal strength sustainable concrete specimens of sizes 1700×150×150 mm with tension reinforcement lap spliced were selected according to testing device length limitations. These members were designed to fail in flexure in order to investigate the lap spliced tension bars effect. The selected lap spliced tension bars were of 10 mm size with smooth and deformed surfaces in order to investigate the surface nature accompanied with the splice nature. The sustainable concrete mechanical properties and mix workability were also studied. This study reveals that the effect of number of spliced bars on the response of beams reinforced with smooth bars is found to be more obvious than deformed one. Finite element modeling in three dimensions was carried out for the tested beams using ABAQUS software. A parametric study is carried out using finite elements on considering the following parameters, concrete compressive strength, load type and opening in cross section (hollow section) for weight reduction purposes.The laboratory and numerical results show good agreements in terms of ultimate load and deflection with an average difference of 10% and 15% in ultimate load and deflection respectively.

Keywords

References

  1. ACI Committee 318 (2014), Building Code Requirements for Structural Concrete, American Concrete Institute, Farmington Hills, Michigan.
  2. Allam, S.M. (2013), "Flexural strengthening of RC beams with lap splices", Int. Rev. Civil Eng., 4(5), 265.
  3. Alyousef, R., Topper, T. and Al-Mayah, A. (2015), "Effect of FRP wrapping on fatigue bond behavior of spliced concrete beams", J. Compos. Constr., 20(1), 04015030. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000588.
  4. Alyousef, R., Topper, T. and Al-Mayah, A. (2016), "Fatigue bond stress-slip behavior of lap splices in the reinforcement of unwrapped and FRP-Wrapped concrete beams", J. Compos. Constr., 20(6), 04016039. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000699.
  5. Alyousef, R., Topper, T. and Al-Mayah, A. (2018), "Crack growth modeling of tension lap spliced reinforced concrete beams strengthened with fibre reinforced polymer wrapping under fatigue loading", J. Constr. Build. Mater., 116, 345-355. https://doi.org/10.1016/j.jobe.2019.100798.
  6. ASTM A615 (2016), Standard Specification for Deformed and Plain Carbon Structural Steel Bars for Concrete Reinforcement. Manual Book of ASTM Standards.
  7. ASTM C 33 (2016), Standard Specification for Concrete Aggregates, Manual Book of ASTM Standards, West Conshohocken, United States.
  8. ASTM C150 (2016), Standard Specification for Portland Cement, Manual Book of ASTM Standards, West Conshohocken, United States.
  9. CSA-A23.3 (2004), Design of Concrete Structures, CAN/CSA A23.3, Canadian Standards Association (CSA), Rexdale, Ont.
  10. Esfahani, M.R. (2000), "Behavior of lap-spliced reinforcing bars embedded in high strength concrete paper by Azizinamini et al. Discussion", ACI Struct. J., 97(4), 669-670.
  11. Esfahani, M.R. and Kianoush, M.R. (2005), "Development/splice length of reinforcing bars", ACI Struct. J., 102(1), 22-30.
  12. Iraqi specification No.45 (1984), Aggregate from Natural Sources for Concrete, Central Agency for Standardization and Quality Control, Planning Council, Baghdad, Iraq.
  13. Mabrouk, R.T. and Mounir, A. (2018), "Behavior of RC beams with tension lap splices confined with transverse reinforcement using different types of concrete under pure bending", Alexand. Eng. J., 57, 1727-1740 . https://doi.org/10.1016/j.aej.2017.05.001 .
  14. Mousa, M.I. (2015), "Flexural behaviour and ductility of high strength concrete (HSC) beams with tension lap splice", Alexand. Eng. J., 54(3), 551-563. https://doi.org/10.1016/j.aej.2015.03.032.
  15. Rakhshanimehr, M., Esfahani, M.R., Kianoush, M.R., Mohammadzadeh, B.A. and Mousavi, S.R. (2014), "Flexural ductility of reinforced concrete beams with lap-spliced bars", Can. J. Civil Eng., 41, 594-604. https://doi.org/10.1139/cjce-2013-0074.
  16. Sharbatdar, M.K., Jafari, O.M. and Karimi, M.S. (2018), "Experimental evaluation of splicing of longitudinal bars with forging welding in flexural reinforced concrete beams", Adv. Concrete Constr., 6(5), 509-525. https://doi.org/10.12989/acc.2018.6.5.509 509.
  17. Wu, C.H., Chen, W.Y. and Chen, H.J. (2018), "Bond behavior of tension bar at lap splice of SCC beam", Key Eng. Mater., 789, 126-130. https://doi.org/10.4028/www.scientific.net/KEM.789.126.

Cited by

  1. Experimental study on shear, tensile, and compression behaviors of composite insulated concrete sandwich wall vol.11, pp.1, 2020, https://doi.org/10.12989/acc.2021.11.1.033
  2. Behavior of reinforced sustainable concrete hollow-core slabs vol.11, pp.4, 2021, https://doi.org/10.12989/acc.2021.11.4.271