⚠ Official Notice: www.ijisrt.com is the official website of the International Journal of Innovative Science and Research Technology (IJISRT) Journal for research paper submission and publication. Please beware of fake or duplicate websites using the IJISRT name.



Experimental Investigation of Flexural Behaviour, Tensile Strength, and Crack Pattern Characteristics of BFRP-Reinforced Concrete Beams


Authors : Nivrutti R. Savandre; Sandip A. Karale; Santosh T. Sanap

Volume/Issue : Volume 11 - 2026, Issue 6 - June


Google Scholar : https://tinyurl.com/mryk85bb

Scribd : https://tinyurl.com/38sxj9um

DOI : https://doi.org/10.38124/ijisrt/26jun532

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.


Abstract : Basalt Fiber Reinforced Polymer (BFRP) bars have emerged as a promising alternative to conventional steel reinforcement owing to their excellent corrosion resistance, high tensile strength, and lightweight characteristics. The present investigation evaluates the tensile and flexural behaviour of reinforced concrete beams reinforced with BFRP bars and compares their performance with that of conventional steel-reinforced beams. Tensile tests were conducted on BFRP bars using a Universal Testing Machine to determine their mechanical properties, while flexural behaviour was examined through four-point bending tests on beam specimens. The influence of reinforcement type and reinforcement ratio on load-carrying capacity, deflection response, crack development, and failure characteristics was investigated. Analytical predictions based on ACI 440 provisions and finite element simulations performed using ANSYS were employed to validate the experimental findings. The results indicated that BFRP-reinforced beams exhibited larger deflections and wider crack widths than steel-reinforced beams because of the lower elastic modulus and linear elastic nature of BFRP bars. However, increasing the reinforcement ratio significantly enhanced flexural stiffness and ultimate load capacity. A satisfactory agreement was observed among experimental observations, analytical calculations, and numerical simulations. The findings demonstrate that BFRP bars can effectively replace conventional steel reinforcement in structures requiring superior durability and corrosion resistance.

Keywords : Basalt Fiber Reinforced Polymer, Reinforced Beam, Flexural Behaviour, Tensile Behaviour, ACI 440, ANSYS, Finite Element Analysis.

References :

  1. L. Jin, Z. Wang, R. Zhang, X. Du, Mesoscopic simulation on flexural behavior of single-way reinforced concrete slab with rebars subjected to localized corrosion, Structures 31 (2021) 815–827, https://doi.org/10.1016/j.istruc.2021.02.033.
  2. Y.C. Ou, N.D. Nguyen, Influences of location of reinforcement corrosion on seismic performance of corroded reinforced concrete beams, Eng. Struct. 126 (2016) 210–223, https://doi.org/10.1016/j.engstruct.2016.07.048.
  3. Tsakalidis, A. Ortega Hortelano, M. Grosso, et al., Research and innovation in bridge maintenance, inspection and monitoring, Publ. Off. Eur. Union (2019), https://doi.org/10.2760/719505.
  4. X. Chai, H. Shang, C. Zhang, Bond behavior between corroded steel bar and concrete under sustained load, Constr. Build. Mater. 310 (2021) 125122, https:// doi.org/10.1016/j.conbuildmat.2021.125122.
  5. X. Yu, S. Robuschi, I. Fernandez, K. Lundgren, Numerical assessment of bond-slip relationships for naturally corroded plain reinforcement bars in concrete beams, Eng. Struct. 239 (2021) 112309, https://doi.org/10.1016/j.engstruct.2021.112309.
  6. J. Hua, F. Wang, X. Xue, H. Fan, W. Yan, Fatigue properties of bimetallic steel bar: an experimental and numerical study, Eng. Fail. Anal. 136 (2022) 106212, https://doi.org/10.1016/j.engfailanal.2022.106212.
  7. Z. Zhang, R. Gong, H. Zhang, W. He, The Sustainability performance of reinforced concrete structures in tunnel lining induced by long-term coastal environment, Sustainability 12 (10) (2020) 3946, https://doi.org/10.3390/su12103946.
  8. J. Cai, Q. Ran, Q. Ma, H. Zhang, K. Liu, Y. Zhou, S. Mu, Influence of a nano-hydrophobic admixture on concrete durability and steel corrosion, Materials 15 (19) (2022) 6842, https://doi.org/10.3390/ma15196842.
  9. C. Li, L. Jiang, S. Li, Effect of limestone powder addition on threshold chloride concentration for steel corrosion in reinforced concrete, Cem. Concr. Res. 131 (2020) 106018, https://doi.org/10.1016/j.cemconres.2020.106018.
  10. A. Al-Negheimish, R.R. Hussain, A. Alhozaimy, D.D.N. Singh, Corrosion performance of hot-dip galvanized zinc-aluminum coated steel rebars in comparison to the conventional pure zinc coated rebars in concrete environment, Constr. Build. Mater. 274 (2021) 121921, https://doi.org/10.1016/j. conbuildmat.2020.121921.
  11. B. Goffin, N. Banthia, N. Yonemitsu, Use of infrared thermal imaging to detect corrosion of epoxy coated and uncoated rebar in concrete, Constr. Build. Mater. 263 (2020) 120162, https://doi.org/10.1016/j.conbuildmat.2020.120162.
  12. T. Imjai, R. Garcia, M. Guadagnini, K. Pilakoutas, Strength degradation in curved Fiber-reinforced Polymer (FRP) bars used as concrete reinforcement, Polymers 12 (8) (2020) 1653, https://doi.org/10.3390/polym12081653.
  13. L.C. Hollaway, A review of the present and future utilisation of FRP composites in the civil infrastructure with reference to their important in-service properties, Constr. Build. Mater. 24 (12) (2010) 2419–2445, https://doi.org/10.1016/j.conbuildmat.2010.04.062.
  14. I.S. Abbood, Strut-and-tie model and its applications in reinforced concrete deep beams: a comprehensive review, Case Stud. Constr. Mater. 19 (2023), https:// doi.org/10.1016/j.cscm.2023.e02643.
  15. Z. Sun, L. Fu, D.C. Feng, A.R. Vatuloka, Y. Wei, G. Wu, Experimental study on the flexural behavior of concrete beams reinforced with bundled hybrid steel/FRP bars, Eng. Struct. 197 (2019) 109443, https://doi.org/10.1016/j.engstruct.2019.109443.
  16. ACI 440.1 R-15, Guide for the Design and Construction of Structural Concrete Reinforced with FRP Bars: ACI 440.1 R-15, American Concrete Institute, Farmington Hills, MI, USA, 2015.
  17. J. Youssef, M.N. Hadi, Axial load-bending moment diagrams of GFRP reinforced columns and GFRP encased square columns, Constr. Build. Mater. 135 (2017) 550–564, https://doi.org/10.1016/j.conbuildmat.2016.12.125.
  18. B. Zhang, H. Zhu, Z. Dong, Z. Yang, Mechanical properties and durability of FRP-reinforced coral aggregate concrete structures: a critical review, Mater. Today Commun. (2023) 105656, https://doi.org/10.1016/j.mtcomm.2023.105656.
  19. Q. Zhao, X.L. Zhao, D. Zhang, L.P. Duan, Effects of exposure in seawater sea-sand concrete pore solution on fatigue performance of carbon FRP bars, Compos. Sci. Technol. (2023) 110418, https://doi.org/10.1016/j.compscitech.2023.110418.
  20. K. Rashid, X. Li, Y. Xie, J. Deng, F. Zhang, Cracking behavior of geopolymer concrete beams reinforced with steel and fiber reinforced polymer bars under flexural load, Compos. Part B: Eng. 186 (2020) 107777, https://doi.org/10.1016/j.compositesb.2020.107777.
  21. X. Liang, X. Yin, Evaluation of the flexural behavior and serviceability of engineered cementitious composite-coral aggregate concrete beams reinforced with BFRP bars, Constr. Build. Mater. 308 (2021) 124937, https://doi.org/10.1016/j.conbuildmat.2021.124937.
  22. J. Cai, J. Pan, X. Zhou, Flexural behavior of basalt FRP reinforced ECC and concrete beams, Constr. Build. Mater. 142 (2017) 423–430, https://doi.org/10.1016/ j.conbuildmat.2017.03.087.
  23. Z. Lu, W. Li, X. Zeng, Y. Pan, Durability of BFRP bars and BFRP reinforced seawater sea-sand concrete beams immersed in water and simulated seawater, Constr. Build. Mater. 363 (2023) 129845, https://doi.org/10.1016/j.conbuildmat.2022.129845.
  24. V. Fiore, T. Scalici, G. Di Bella, A. Valenza, A review on basalt fibre and its composites, Compos. Part B: Eng. 74 (2015) 74–94, https://doi.org/10.1016/j. compositesb.2014.12.034.
  25. H. Wang, A. Belarbi, Ductility characteristics of fiber-reinforced-concrete beams reinforced with FRP rebars, Constr. Build. Mater. 25 (5) (2011) 2391–2401, https://doi.org/10.1016/j.conbuildmat.2010.11.040.
  26. C. High, H.M. Seliem, A. El-Safty, S.H. Rizkalla, Use of basalt fibers for concrete structures, Constr. Build. Mater. 96 (2015) 37–46, https://doi.org/10.1016/j. conbuildmat.2015.07.138.
  27. J.M. Yang, K.H. Min, H.O. Shin, Y.S. Yoon, Effect of steel and synthetic fibers on flexural behavior of high-strength concrete beams reinforced with FRP bars, Compos. Part B: Eng. 43 (3) (2012) 1077–1086, https://doi.org/10.1016/j.compositesb.2012.01.044.
  28. M.S. Issa, I.M. Metwally, S.M. Elzeiny, Influence of fibers on flexural behavior and ductility of concrete beams reinforced with GFRP rebars, Eng. Struct. 33 (5) (2011) 1754–1763, https://doi.org/10.1016/j.engstruct.2011.02.014.
  29. F. Abed, A.R. Alhafiz, Effect of basalt fibers on the flexural behavior of concrete beams reinforced with BFRP bars, Compos. Struct. 215 (2011) 23–34, https:// doi.org/10.1016/j.compstruct.2019.02.050.
  30. ACI 440.1R-2006. Guide for the Design and Construction of Structural Concrete Reinforced with FRP Bars: ACI 440.1 R-06. American Concrete Institute, Farmington Hills, MI, USA, 2006.
  31. W. Ge, A. Ashour, D.F. Cao, et al., Experimental study on flexural behavior of ECC-concrete composite beams reinforced with FRP bars, Compos. Struct. 208 (2019) 454–465, https://doi.org/10.1016/j.compstruct.2018.10.026.
  32. Z. Li, C. Ma, X. Guo, Experimental and analytical study of the flexural behavior of basalt fiber-reinforced concrete beams, Struct. Concr. (2023), https://doi.org/ 10.1002/suco.202200449.
  33. CSA-S6-14. Canadian highway bridge design code. Rexdale (on, Canada): Canadia.
  34. GB50608-2010, Technical specification for application of fiber reinforced composite materials in construction projects.
  35. Q. Li, W. Guo, Y. Kuang, Parameter calculation and verification of concrete plastic damage model of ABAQUS, IOP Conf. Ser. Mater. Sci. Eng. 794 (2020) 012036, https://doi.org/10.1088/1757-899X/794/1/012036

Basalt Fiber Reinforced Polymer (BFRP) bars have emerged as a promising alternative to conventional steel reinforcement owing to their excellent corrosion resistance, high tensile strength, and lightweight characteristics. The present investigation evaluates the tensile and flexural behaviour of reinforced concrete beams reinforced with BFRP bars and compares their performance with that of conventional steel-reinforced beams. Tensile tests were conducted on BFRP bars using a Universal Testing Machine to determine their mechanical properties, while flexural behaviour was examined through four-point bending tests on beam specimens. The influence of reinforcement type and reinforcement ratio on load-carrying capacity, deflection response, crack development, and failure characteristics was investigated. Analytical predictions based on ACI 440 provisions and finite element simulations performed using ANSYS were employed to validate the experimental findings. The results indicated that BFRP-reinforced beams exhibited larger deflections and wider crack widths than steel-reinforced beams because of the lower elastic modulus and linear elastic nature of BFRP bars. However, increasing the reinforcement ratio significantly enhanced flexural stiffness and ultimate load capacity. A satisfactory agreement was observed among experimental observations, analytical calculations, and numerical simulations. The findings demonstrate that BFRP bars can effectively replace conventional steel reinforcement in structures requiring superior durability and corrosion resistance.

Keywords : Basalt Fiber Reinforced Polymer, Reinforced Beam, Flexural Behaviour, Tensile Behaviour, ACI 440, ANSYS, Finite Element Analysis.

Paper Submission Last Date
31 - July - 2026

SUBMIT YOUR PAPER CALL FOR PAPERS
Video Explanation for Published paper

Never miss an update from Papermashup

Get notified about the latest tutorials and downloads.

Subscribe by Email

Get alerts directly into your inbox after each post and stay updated.
Subscribe
OR

Subscribe by RSS

Add our RSS to your feedreader to get regular updates from us.
Subscribe