Cover
Vol. 21 No. 2 (2021)

Published: July 31, 2021

Pages: 53-61

Original Article

Experimental Study on Shear Strengthening of Reinforced Concrete Beams Using Different Techniques of Concrete Jacketing

Mohammed F. Ojaimi 1
1 Department of Civil Engineering, College of Engineering, University of Basrah, Basrah, Iraq
History
  • Received: June 5, 2021
  • Revised: July 5, 2021
  • Accepted: July 11, 2021
  • Available Online: July 11, 2021
DOI

https://doi.org/10.33971/bjes.21.2.8

Abstract

A large number of RC structures or at least some of their members need strengthening or rehabilitation. Among the typical failure modes, the shear failure is more dangerous and less predictable, because of usually brittle behavior and sudden collapse. Therefore, there are necessities for upgrading the shear capacity and the local ductility of reinforced concrete beams. In this study, four different techniques of concrete jacketing were used to improve the behaviors of the shear deficiencies beams. The four techniques used in this study to enhance the behavior of the beams were by using a Self-Compacted Fiber Reinforced Concrete jacket without stirrups (S.-J. + Steel Fiber), a concrete jacket of Self Compacted Concrete with stirrups (S.-J. + Stirrups), a concrete jacket of ferrocement jacket (S.-J. + Ferrocement), and a concrete jacket of ferrocement jacket with external steel reinforcing bars (S.-J. + Ferrocement + R). These techniques contributed to enhancing the load-carrying capacity and delaying the appearance of the first crack in tested beams compared with the control beam by a percentage of (35, 59, 30, 6) % and (18, 35, 81, 80) %, respectively. The specimen (S.-J. + Stirrups) showed the best performance in comparison with the other used strengthening techniques used in this study in terms of stiffness and the ultimate load-carrying capacity. The ferrocement jacket (S.-J. + Ferrocement) was found to be the most suitable jacketing system used to enhance the shear capacity in terms of cracking load.

Keywords

References

  1. G. J. Al-Sulaimani, A. Sharif, I. A. Basunbul, M. H. Baluch, and B. N. Ghaleb, “Shear repair for reinforced concrete by fiberglass plate bonding”, Structural Journal, Vol. 91, Issue 4, pp. 458-464, 1994.
  2. M. S. Abdel-Jaber, P. R. Walker, and A. R. Hutchinson, “Shear strengthening of reinforced concrete beams using different configurations of externally bonded carbon fibre reinforced plates”, Materials and Structures, Vol. 36, pp. 291-301, 2003. https://doi.org/10.1007/BF02480868
  3. S. Ali Dadvar, D. Mostofinejad, and H. Bahmani, “Strengthening of RC columns by ultra-high performance fiber reinforced concrete (UHPFRC) jacketing”, Construction and Building Materials, Vol. 235, 2020.
  4. W. Li, H. Liang, Y. Lu, J. Xue, and Z. Liu, “Axial behavior of slender RC square columns strengthened with circular steel tube and sandwiched concrete jackets”, Engineering Structure, Vol. 179, pp. 423-437, 2019.
  5. M. N. S. Hadi, A. H. M. Algburi, M. N. Sheikh, and A. T. Carrigan, “Axial and flexural behaviour of circular reinforced concrete columns strengthened with reactive powder concrete jacket and fibre reinforced polymer wrapping”, Construction and Building Materials, Vol. 172, pp. 717-727, 2018.
  6. Abdullah and K. Takiguchi, “An investigation into the behavior and strength of reinforced concrete columns strengthened with ferrocement jackets”, Cement and Concrete Composites, Vol. 25, Issue 2. pp. 233-242, 2003.
  7. M. Soman and J. Mohan, “Rehabilitation of RC columns using ferrocement jacketing”, Construction and Building Materials, Vol. 181, pp. 156-162, 2018.
  8. I. G. Shaaban and O. A. Seoud, “Experimental behavior of full-scale exterior beam-column space joints retrofitted by ferrocement layers under cyclic loading”, Case Studies in Construction Materials, Vol. 8, pp. 61-78, 2018.
  9. M. Sabbaghian and A. Kheyroddin, “Flexural strengthening of RC one way slabs with high-performance fiber-reinforced cementitious composite laminates using steel and GFRP bar”, Engineering Structures, Vol. 221, 2020. https://doi.org/10.1016/j.engstruct.2020.111106
  10. G. Martinola, A. Meda, G. A. Plizzari, and Z. Rinaldi, “Strengthening and repair of RC beams with fiber reinforced concrete”, Cement and Concrete Composites, Vol. 32, Issue 9. pp. 731-739, 2010.
  11. X. Zhang, Y. Luo, L. Wang, J. Zhang, W. Wu, and C. Yang, “Flexural strengthening of damaged RC T-beams using self-compacting concrete jacketing under different sustaining load”, Construction and Building Materials, Vol. 172, pp. 185-195, 2018.
  12. S. Jayasree, N. Ganesan, and R. Abraham, “Effect of ferrocement jacketing on the flexural behaviour of beams with corroded reinforcements”, Construction and Building Materials, Vol. 121, pp. 92-99, 2016.
  13. M. Safdar, T. Matsumoto, and K. Kakuma, “Flexural behavior of reinforced concrete beams repaired with ultrahigh performance fiber reinforced concrete (UHPFRC)”, Composite Structures, Vol. 157, pp. 448-460, 2016.
  14. S. A. Paschalis, A. P. Lampropoulos, and O. Tsioulou, “Experimental and numerical study of the performance of ultra high performance fiber reinforced concrete for the flexural strengthening of full scale reinforced concrete members”, Construction and Building Materials, Vol. 186, pp. 351-366, 2018.
  15. G. C. Behera, T. D. G. Rao, and C. B. K. Rao, “Torsional behaviour of reinforced concrete beams with ferrocement U-jacketing-Experimental study”, Case Studies in Construction Materials, Vol. 4, pp. 15-31, 2016.
  16. T. J. Mohammed, B. H. Abu Bakar, and N. Muhamad Bunnori, “Torsional improvement of reinforced concrete beams using ultra high-performance fiber reinforced concrete (UHPFC) jackets - Experimental study”, Construction and Building Materials, Vol. 106, pp. 533542, 2016.
  17. T. A. El-Sayed and A. M. Erfan, “Improving shear strength of beams using ferrocement composite”, Construction and Building Materials, Vol. 172, pp. 608617, 2018.
  18. A. A. Bahraq, M. A. Al-Osta, S. Ahmad, M. M. AlZahrani, S. O. Al-Dulaijan, and M. K. Rahman, “Experimental and Numerical Investigation of Shear Behavior of RC Beams Strengthened by Ultra-High Performance Concrete”, International Journal of Concrete Structures and Materials, Vol. 13, No. 6. 2019.
  19. G. Ruano, F. Isla, R. I. Pedraza, D. Sfer, and B. Luccioni, “Shear retrofitting of reinforced concrete beams with steel fiber reinforced concrete”, Construction and Building Materials, Vol. 54, pp. 646-658, 2014.
  20. R. Z. Al-Rousan and M. J. Shannag, “Shear Repairing and Strengthening of Reinforced Concrete Beams Using SIFCON”, Structures, Vol. 14, pp. 389-399, 2018.
  21. X. yan Shang, J. tao Yu, L. zhi Li, and Z. dao Lu, “Shear strengthening of fire damaged RC beams with stirrup reinforced engineered cementitious composites”, Engineering Structures, Vol. 210, 2020.
  22. J. H. Gonzalez-Libreros, C. Sabau, L. H. Sneed, C. Pellegrino, and G. Sas, “State of research on shear strengthening of RC beams with FRCM composites”, Construction and Building Materials, Vol. 149, pp. 444458, 2017.
  23. C. E. Chalioris, G. E. Thermou, and S. J. Pantazopoulou, “Behaviour of rehabilitated RC beams with selfcompacting concrete jacketing - Analytical model and test results”, Construction and Building Materials, Vol. 55, pp. 257-273, 2014.
  24. P. Paramasivam, C. T. E. Lim, and K. C. G. Ong, “Strengthening of RC beams with ferrocement laminates”, Cement and Concrete Composites, Vol. 20, Issue 1, pp. 5365, 1998. https://doi.org/10.1016/S0958-9465(97)00068-1
  25. R. F. Makki, “Response of Reinforced Concrete Beams Retrofitted by Ferrocement”, International Journal of Scientific & Technology Research, Vol. 3, Issue 9, pp. 2734, 2014.
  26. S. Sirimontree, B. Witchayangkoon, K. Leartpocasombut, and C. Thongchom, “Flexural Behavior of Reinforced Concrete Beams Strengthened with Ferrocement”, International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, Vol. 10, Issue 9, 2019.
  27. M. J. Miah, M. S. Miah, W. B. Alam, F. Lo Monte, and Y. Li, “Strengthening of RC beams by ferrocement made with unconventional concrete”, Magazine of Civil Engineering, Vol. 89, Issue 5, pp. 94-105, 2019.
  28. ACI Committee 318, “Building Code Requirements for Structural Concrete”, American Concrete Institute, p. 524, 2014.
  29. British Standard Institution, “Bs En 12390-3:2019”, Testing hardened concrete Compressive strength of test specimens, p. 24, 2019.
  30. ASTM, “ASTM C78 / C78M-16, Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)”, ASTM International, 2016.
  31. ASTM, “ASTM C496 / C496M-17, Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens”, ASTM International, 2017.
  32. ACI 549.1R-93, “Guide for the Design, Construction, and Repair of Ferrocement”, p. 30, 1999.