Saeed, Y., Al-Lami, K., Rad, F. (2024). Theoretical model to predict the flexural response of concrete beams pre-tensioned with CFRP rods considering CFRP slippage effects. , 17(4), 312-321. doi: 10.30772/qjes.2024.152275.1326
Yasir M. Saeed; Karrar Al-Lami; Franz Rad. "Theoretical model to predict the flexural response of concrete beams pre-tensioned with CFRP rods considering CFRP slippage effects". , 17, 4, 2024, 312-321. doi: 10.30772/qjes.2024.152275.1326
Saeed, Y., Al-Lami, K., Rad, F. (2024). 'Theoretical model to predict the flexural response of concrete beams pre-tensioned with CFRP rods considering CFRP slippage effects', , 17(4), pp. 312-321. doi: 10.30772/qjes.2024.152275.1326
Saeed, Y., Al-Lami, K., Rad, F. Theoretical model to predict the flexural response of concrete beams pre-tensioned with CFRP rods considering CFRP slippage effects. , 2024; 17(4): 312-321. doi: 10.30772/qjes.2024.152275.1326

Theoretical model to predict the flexural response of concrete beams pre-tensioned with CFRP rods considering CFRP slippage effects

Al-Qadisiyah Journal for Engineering Sciences
Article 1, Volume 17, Issue 4, December 2024, Pages 312-321    PDF (762.65 K)
Document Type: Research Paper
DOI: 10.30772/qjes.2024.152275.1326
Authors
Yasir M. Saeed* 1, 2; Karrar Al-Lami3; Franz Rad4
1Directorate of Research and Development, the Ministry of Higher Education and Scientific Research, Iraq
2Department of Civil Engineering, College of Engineering, Tikrit University, Tikrit, Salah Al-Deen, Iraq.
3Civil Engineering Department, College of Engineering, University of Wasit, Al-Kut, Wasit, Iraq.
4Department of Civil and Environmental Engineering, College of Engineering and Computer Science, Portland State University, P.O. Box 751, Portland, Oregon 97207, USA
Abstract
The overwhelming costs of maintenance for reinforced concrete structures due to steel corrosion have motivated researchers to look for alternatives. One of the promising alternatives is Fiber Reinforced Polymer (FRP). Among FRP materials, Carbon FRP (CFRP) is the most attractive material for prestressed concrete members due to its high tensile strength and modulus of elasticity. Previous studies investigated the use of CFRP in prestressed concrete through experimental tests and theoretical analysis. However, there is a significant need for more experimental data to develop an accurate model that can accurately predict the behavior of CFRP prestressed concrete beams. In the current study, experimental flexural tests were conducted on four prestressed concrete beams pre-tensioned with CFRP rods. The length of the beams was 4,270 mm, and the cross-sectional dimensions were 138 x 250 mm. All the beams were subjected to four-point loading with an initial five cycles of loading and unloading before a monotonic loading until failure. Their performance was analyzed, and based on the results a theoretical model was proposed. It was found that the slippage of CFRP at the ends significantly affect the flexural behavior and failure modes of the beams. Additionally, theoretical models must account for CFRP slippage at the ends to accurately predict the flexural response of CFRP prestressed concrete beams. When a slippage reduction factor was used in the proposed theoretical model, the results had a good agreement with the experimental tests. Future research may focus on testing the theoretical model with more data from experimental studies.
Keywords
Bond; CFRP; Flexural performance; Prestressed concrete beams; Pre-tension; Slippage; Theoretical analysis
References
  1. Barros J a. O, Taheri M, Salehian H, Mendes PJD. A design model for fibre reinforced concrete beams pre-stressed with steel and FRP bars. Compos Struct 2012;94:2494–512. doi:10.1016/j.compstruct.2012.03.007.
  2. Noël M, Soudki K. Effect of Prestressing on the Performance of GFRP-Reinforced Concrete Slab Bridge Strips 2013:188–96.
  3. Saeed YM, Aules WA, Rad FN. Flexural strengthening of RC columns with EB-CFRP sheets and NSM-CFRP rods and ropes. Compos Struct 2022;301:116236. doi:10.1016/j.compstruct.2022.116236.
  4. Nanni A. Flexural Behavior and Design of RC Members Using FRP Reinforcement. J Struct Eng 1993;119:3344–59. doi:10.1061/(ASCE)0733-9445(1993)119:11(3344).
  5. Hollaway LC. 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 2010;24:2419–45. doi:10.1016/j.conbuildmat.2010.04.062.
  6. Benmokrane B, Chaallal O, Masmoudi R. Flexural Response of Concrete Beams Reinforced withFRP Reinforcing Bars. Struct J 1996;93:46–55. doi:10.14359/9839.
  7. Yost JR, Gross SP, Dinehart DW. Effective Moment of Inertia for Glass Fiber-Reinforced Polymer-Reinforced Concrete Beams. Struct J 2003;100:732–9. doi:10.14359/12839.
  8. Sonobe Y, Fukuyama H, Okamoto T, Kani N, Kimura K, Kobayashi K, et al. Design Guidelines of FRP Reinforced Concrete Building Structures. J Compos Constr 1997;1:90–115. doi:10.1061/(ASCE)1090-0268(1997)1:3(90).
  9. Nanni A. Fiber-reinforced-plastic (FRP) reinforcement for concrete structures : properties and applications 1993:450.
  10. Burningham CA, Pantelides CP, Reaveley LD. New unibody clamp anchors for posttensioning carbon-fiber-reinforced polymer rods. PCI J 2014;59:103–13.
  11. Saeed YM, Rad FN. Experimental investigation of CFRP prestressed concrete beams. Am. Concr. Institute, ACI Spec. Publ., vol. 2017- March, 2017.
  12. Zhang B, Benmokrane B, Chennouf A, Mukhopadhyaya P, El-safty A. Tensile behavior of Frp tendons for prestressed ground anchors. J Compos Constr 2001;5:85–93. doi:10.1061/(ASCE)1090-0268(2001)5:2(85).
  13. Grace NF, Jensen E, Matsagar V, Penjendra P. Performance of an AASHTO Beam Bridge Prestressed with CFRP Tendons. J Bridg Eng 2013;18:110–21. doi:10.1061/(ASCE)BE.1943-5592.0000339.
  14. Al-Mayah A, Soudki KA, Plumtree A. Experimental and analytical investigation of a stainless steel anchorage for CFRP prestressing tendons. PCI J 2001;46:88–100. doi:10.15554/pcij.03012001.88.100.
  15. Sayed-Ahmed E, Shrive NG. A new steel anchorage system for post-tensioning applications using carbon fibre reinforced plastic tendons. Can J Civ Eng 1998;25:113–27. doi:10.1139/l97-054.
  16. Saadatmanesh H, Ehsani MR. RC Beams Strengthened with GFRP Plates. I: Experimental Study. J Struct Eng 1991;117:3417–33. doi:10.1061/(ASCE)0733-9445(1991)117:11(3417).
  17. Malek AM, Saadatmanesh H. Analytical Study of Reinforced Concrete Beams Strengthened with Web-Bonded Fiber Reinforced Plastic Plates or Fabrics. Struct J 1998;95:343–52. doi:10.14359/551.
  18. Braimah A, Green MF, Soudki KA. Long-Term Behavior of CFRP Prestressed Concrete Beams. PCI J 2003;48:98–107.
  19. Peng F, Xue W. Analytical Approach for Flexural Capacity of FRP Prestressed Concrete T-Beams with Non-Prestressed Steel Bars. J Compos Constr 2018;22:04018063. doi:10.1061/(ASCE)CC.1943-5614.0000903.
  20. Cao Q, Zhou J, Wu Z, Ma ZJ. Flexural behavior of prestressed CFRP reinforced concrete beams by two different tensioning methods. Eng Struct 2019;189:411–22. doi:10.1016/J.ENGSTRUCT.2019.03.051.
  21. Zou PXW, Shang S. Time-dependent behaviour of concrete beams pretensioned by carbon fibre-reinforced polymers (CFRP) tendons. Constr Build Mater 2007;21:777–88. doi:10.1016/J.CONBUILDMAT.2006.06.008.
  22. Garg S, Matsagar V, Marburg S. Nonlinear Finite Element Analyses of Prestressed Concrete Beams Strengthened with CFRP Laminate. Struct Eng Int 2023;33:258–64. doi:10.1080/10168664.2022.2158449.
  23. ASTM Standard D7205/D7205M. Standard Test Method for Tensile Properties of Fiber Reinforced Polymer Matrix Composite Bars. West Conshohocken, PA: ASTM International; 2011.
  24. ASTM C469/ C469 - 10. Standard Test Method for Static Modulus of Elasticity and Poisson’s Ratio of Concrete in Compression. 2010.
  25. ACI Committee 440 (ACI 440.1R-15). Guide for the Design and Construction of Structural Concrete Reinforced with Fiber-Reinforced Polymer Bars. Farmington Hills, MI.: 2015.
  26. ACI Committee 318 (ACI 318-19). Building Code Requirements for Structural Concrete and Commentary. Farmington Hills, MI.: 2019.
  27. Nanni A, Tanigaki M. Pretensioned Prestressed Concrete Memberswith Bonded Fiber Reinforced Plastic Tendons:Development and Flexural Bond Lengths (Static). Struct J 1992;89:433–41. doi:10.14359/9640.
  28. Harajli M, Abouniaj M. Bond Performance of GFRP Bars in Tension: Experimental Evaluation and Assessment of ACI 440 Guidelines. J Compos Constr 2010;14:659–68. doi:10.1061/(ASCE)CC.1943-5614.0000139.
  29. Mahmoud Z, Rizkalla SH, E Z. Transfer and Development Lengths of Carbon Fiber Reinforced Polymers Prestressing Reinforcement. ACI Struct J 1999;96.
  30. Saeed YM, Al-Obaidi SM, Al-hasany EG, Rad FN. Evaluation of a new bond-type anchorage system with expansive grout for a single FRP rod. Constr Build Mater 2020;261:120004. doi:10.1016/j.conbuildmat.2020.120004.
  31. ACI Committee 440 (ACI 440R-07). ACI PRC-440-07 Report on Fiber-Reinforced Polymer (FRP) Reinforcement for Concrete Structures. 2007.
  32. Abdelrahman AA, Tadros G, Rizkalla SH. Test Model for the First Canadian Smart Highway Bridge. ACI Struct J 1995;92:451–8.
  33. Zou PXW. Flexural behavior and deformability of fiber reinforced polymer prestressed concrete beams. J Compos Constr 2003;7:275–84.
  34. Nawy EG. Prestressed Concrete: A Fundamental Approach. Fifth. Prentice Hall; 2009.
  35. Wee TH, Chin MS, Mansur M a. Stress-Strain Relationship of High-Strength Concrete in Compression. J Mater Civ Eng 1996;8:70–6.
  36. ACI Committee 440 (ACI 440.4R-04). Prestressing Concrete Structures with FRP Tendons. Farmington Hills, MI.: 2004.
  37. Bank LC. Composites for construction: structural design with FRP materials. New Jersey, USA: John Wiley & Sons Inc.; 2006.
  38. Zoghi M. The international handbook of FRP Composites in Civil Engineering. Boca Raton, FL: Taylor & Francis Group, LLC; 2014.
  39. The MathWorks Inc. MATLAB version: 9.13.0 (R2022b) 2017.
  40. Saeed YM. Behavior of Prestressed Concrete Beams with CFRP Strands. Portland State University, 2016. doi:10.15760/etd.2722.
  41. Yao LZ, Wu G. Fiber-element modeling for seismic performance of square RC bridge columns retrofitted with NSM BFRP bars and/or BFRP sheet confinement. J Compos Constr 2016;20:1–15. doi:10.1061/(ASCE)CC.1943-5614.0000652.
  42. El Refai A. Durability and fatigue of basalt fiber-reinforced polymer bars gripped with steel wedge anchors. J Compos Constr 2013;17. doi:10.1061/(ASCE)CC.1943-5614.0000417.
Statistics
Article View: 846
PDF Download: 431


Journal Management System. Powered by iJournalPro.com