Critical Review of Deflection Formulas for FRP-RC Members
Source abstract
Abstract
The design of fiber-reinforced polymer reinforced concrete (FRP-RC) is typically governed by serviceability limit state requirements rather than ultimate limit state requirements as conventional reinforced concrete is. Thus, a method is needed that can predict the expected service load deflections of fiber-reinforced polymer (FRP) reinforced members with a reasonably high degree of accuracy. Nine methods of deflection calculation, including methods used in ACI 440.1R-03, and a proposed new formula in the next issue of this design guide, CSA S806-02 and ISIS M03-01, are compared to the experimental deflection of 197 beams and slabs tested by other investigators. These members are reinforced with aramid FRP, glass FRP, or carbon FRP bars, have different reinforcement ratios, geometric and material properties. All members were tested under monotonically applied load in four point bending configuration. The objective of the analysis in this paper is to determine a method of deflection calculation for FRP RC members, which is the most suitable for serviceability criteria. The analysis revealed that both the modulus of elasticity of FRP and the relative reinforcement ratio play an important role in the accuracy of the formulas.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Structural Behavior of Reinforced Concrete · Concrete Corrosion and Durability · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Research Assistant, Dept. of Civil Engineering, Univ. of Manitoba, Winnipeg MB, Canada R3T 5V6.
Associate Professor, Dept. of Civil Engineering, Univ. of Manitoba, Winnipeg MB, Canada R3T 5V6 (corresponding author).
References (19)
Show source-provided references
1. American Concrete Institute (ACI). (1999). “Building code requirements for structural concrete.” Standard 318–99 ACI Farmington Hills Mich.
2. American Concrete Institute · 2003
3. American Concrete Institute · 2004
4. Flexural response of concrete beams reinforced with FRP reinforcing bars
5. Branson D. E. (1965). “Instantaneous and time-dependent deflections of simple and continuous reinforced beams.” HPR Rep. No. 7 Part 1 Alabama Highway Department Bureau of Public Roads Montgomery Ala.
6. Brown V. L. and Bartholomew C. L. (1996). “Long-term deflections of GFRP-reinforced concrete beams.” Proc. ICCI Tucson Ariz. 389–400.
7. Canadian Standards Association · 1998
8. Canadian Standards Association · 2002
9. Monte Carlo simulation of immediate and time-dependent deflections of reinforced concrete beams and slabs
10. Comite Euro-International du Beton—Federation International de la Precontrainte (CEB-FIP). (1990). Model code for concrete structures (MC-90) Thomas Telford London.
11. Faza S. S. and GangaRao H. V. S. (1992). “Pre- and post-cracking deflection behavior of concrete beams reinforced with fibre-reinforced plastic rebars.” Proc. Advanced Composite Materials in Bridges and Structures Canadian Society for Civil Engineering Sherbrooke Que. Canada 151–160.
12. 10.1139/cjce-28-4-58310.1139/cjce-28-4-583 ↗
13. Mota C. (2005). “Flexural and Shear Behavior of FRP-RC Members.” MSc thesis Univ. of Manitoba Winnipeg Man. Canada.
14. Rational method for calculating deflection of fiber-reinforced polymer reinforced beams
15. Reda Taha M. M. · 2003 · 65
16. Rizkalla S. · 2001
17. Theriault M. and Benmokrane B. (1997). “Theoretical and experimental investigation on crack width deflection and deformability of concrete beams reinforced with FRP rebars.” Proc. Annual Conf. of the Canadian Society for Civil Engineering Canadian Society for Civil Engineering Sherbrooke Quebec Canada 151–160.
18. Flexural behavior of concrete beams reinforced with glass fiber-reinforced polymer (GFRP) bars
19. Effective moment of inertia for glass fiber-reinforced polymer-reinforced concrete beams