Response of Glass Fiber Reinforced Polymer (GFRP)-Steel Hybrid Reinforcing Bar in Uniaxial Tension
Source abstract
Abstract
This study introduces a glass fiber reinforced polymer (GFRP)-steel hybrid bar with a core of a deformed steel bar (steel core). Six types of the hybrid cross section were considered, and a total of 48 tensile specimens were tested by the uniaxial tensile test to measure the tensile strength and modulus of elasticity of the GFRP hybrid bar. The results of the uniaxial tensile test revealed that the GFRP hybrid bar showed higher modulus of elasticity and lesser ultimate tensile strength than those shown by a normal GFRP bar. The stress–strain relationship showed a bi-linear behavior indicating good ductility against the brittle failure of a normal GFRP bar. Among all the steel core having a diameter of 19.1 mm, the bar with a core diameter of 9.53 mm exhibited the highest tangent modulus of elasticity. A tensile stress–strain model was suggested for the GFRP hybrid bar having an outer diameter of 19.1 mm and a core diameter of 9.53 mm. This was in good agreement with the experimental results. The suggested stress–strain model can be applied for structural design or analysis of concrete structures such as bridge deck slabs.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Structural Behavior of Reinforced Concrete · Innovative concrete reinforcement materials · Concrete Corrosion and Durability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (23)
Show source-provided references
1. AASHTO. LRFD. (2009). Bridge design guide specifications for GFRP-Reinforced concrete bridge decks and traffic railings. Washington, DC, USA: American Association of State Highway and Transportation Officials.
2. ACI Committee 440. (2004). Guide test methods for fiber-reinforced polymers (FRPs) for reinforcing or strengthening concrete structures (ACI 440.3R-04). Farmington Hills, MI, USA: American Concrete Institute.
3. ACI Committee 440. (2015). Guide for the design and construction of concrete reinforced with FRP bars (ACI 440.1R-15). Farmington Hills, MI, USA: American Concrete Institute.
4. ASTM D 3916. (2002). Standard test method for tensile properties of pultruded glass fiber reinforced plastic rods. West Conshohocken, PA: American Standard Test Method
5. CAN/CSA S806-12. (2012). Design and construction of building structures with fibre-reinforced polymers. Ontario, Canada: Canadian Standards Association/National Standard of Canada.
6. Carvelli, V., Pisani, M. A., & Poggi, C. (2010). Fatigue behavior of concrete bridge deck slabs reinforced with GFRP bars. Composites Part B, 41(7), 560–567.10.1016/j.compositesb.2010.06.006 ↗
7. Choi, O. C., Jung, S. Y., & Park, Y. S. (2006). Corrosion evaluation of epoxy-coated bars in chloride contaminated concrete using linear polarization tests. International Journal of Concrete Structures and Materials, 18(1E), 03–09.10.4334/IJCSM.2006.18.1E.003 ↗
8. Choi, O. C., Park, Y. S., & Ryu, H. Y. (2008). Corrosion evaluation of epoxy-coated bars by electrochemical impedance spectroscopy. International Journal of Concrete Structures and Materials, 2(2), 99–105.10.4334/IJCSM.2008.2.2.099 ↗
9. El-Gamal, S. E., El-Salakawy, E. F., & Benmokrane, B. (2007). Influence of reinforcement on the behavior of concrete bridge deck slabs reinforced with FRP bars. ASCE, Journal of Composites for Construction, 11(5), 449–458.10.1061/(ASCE)1090-0268(2007)11:5(449) ↗
10. El-Gamal, S. E., El-Salakawy, E. F., & Benmokrane, B. (2009). Durability and structural performance of carbon fibre reinforced polymer–reinforced concrete parking garage slabs. Canadian Journal of Civil Engineering, 36(4), 617–627.10.1139/L09-016 ↗
11. El-Refai, A., Abed, F., & Al-Rahmani, A. (2015). Structural performance and serviceability of concrete beams reinforced with hybrid (GFRP and steel) bars. Construction and Building Materials, 96, 518–529.10.1016/j.conbuildmat.2015.08.063 ↗
12. Lau, D., & Pam, H. J. (2010). Experimental study of hybrid FRP reinforced concrete beams. Engineering Structures, 32(12), 3857–3865.10.1016/j.engstruct.2010.08.028 ↗
13. Maranan, G. B., Manalo, A. C., Benmokrane, B., Karunasena, W., & Mendis, P. (2015). Evaluation of the flexural strength and serviceability of geopolymer concrete beams reinforced with glass-fibre-reinforced polymer (GFRP) bars. Engineering Structures, 100, 529–541.10.1016/j.engstruct.2015.08.003 ↗
14. Mazaheripour, H., Barros, J. A. O., Soltanzadeh, F., & Sena-Cruz, J. (2016). Deflection and cracking behavior of SFRSCC beams reinforced with hybrid prestressed GFRP and steel reinforcements. Engineering Structures, 125, 546–565.10.1016/j.engstruct.2016.07.026 ↗
15. Nanni, A., Henneke, M. J., & Okamoto, T. (1994). Tensile properties of hybrid rods for concrete reinforcement. Construction and Building Materials, 8(1), 27–34.10.1016/0950-0618(94)90005-1 ↗
16. Park, C., Park, Y., Kim, S., & Ju, M. (2016). New emerging surface treatment of hybrid GFRP bar for stronger durability of concrete structures. Smart Structures and Systems, 17(4), 593–610.10.12989/sss.2016.17.4.593 ↗
17. Popovics, S. A. (1970). Review of stress-strain relationships for concrete. ACI Structural Journal, 67(3), 243–248.
18. Pritzl, M. D., Tabatabai, H., & Ghorbanpoor, A. (2014). Laboratory evaluation of select methods of corrosion prevention in reinforced concrete bridges. International Journal of Concrete Structures and Materials, 8(3), 201–212.10.1007/s40069-014-0074-3 ↗
19. Seo, D. W., Park, K. T., You, Y. J., & Kim, H. Y. (2013). Enhancement in elastic modulus of GFRP bars by material hybridization. Scientific Research, 5, 865–869.
20. Tae, S. H. (2006). Corrosion resistance of Cr-bearing rebar to macrocell corrosion environment induced by localized carbonation. International Journal of Concrete Structures and Materials, 18(1E), 17–22.10.4334/IJCSM.2006.18.1E.017 ↗
21. You, Y. J., Park, Y. H., Kim, H. Y., & Park, J. S. (2007). Hybrid effect on tensile properties of FRP rods with various material composition. Composite Structures, 80, 117–122.10.1016/j.compstruct.2006.04.065 ↗
22. You, Y. J., Kim, J. H., Park, Y. H., & Choi, J. H. (2015). Fatigue performance of bridge deck reinforced with cost-to-performance optimized GFRP rebar with 900 MPa guaranteed tensile strength. Journal of Advanced Concrete Technology, 13, 252–262.10.3151/jact.13.252 ↗
23. Zheng, Y., Li, C., & Yu, G. (2012). Investigation of structural behaviors of laterally restrained GFRP reinforced concrete slabs. Composites Part B, 43(3), 1586–1597.10.1016/j.compositesb.2011.11.012 ↗