Shear Contribution of GFRP Reinforced Concrete Beams Mixed with Seawater, Freshwater, and Chopped Glass Fiber
DOI:
https://doi.org/10.56830/IJSIE06202302Keywords:
Seawater, Chopped Fiber, Fiber-Reinforced Polymer (FRP), Shear StrengthAbstract
The behavior and shear strength of concrete beams reinforced with longitudinal GFRP bars mixed with seawater are the subject matter of experimental research discussed in this paper. Seven beams were tested in bending to determine how much concrete contributes to shear resistance. The beams were longitudinally reinforced with glass fiber-reinforced polymer bars and were similar in size and concrete strength; however, they were not even shear-reinforced. The 3,100 mm long, 400 mm deep, and 200 mm wide beams underwent thorough testing until the failure. The test parameters included chopped fiber content (0, 0.5, 2, and 3 kg/m3), longitudinal reinforcement ratios (1.0, 1.4, and 2.0%), and mixing water type (freshwater and seawater). The test findings showed that Increasing the reinforcement ratio raised the neutral-axis depth, enabled the formation of more closely spaced cracks, and minimized the loss of flexural stiffness after cracking, according to the test results. The contribution of aggregate interlock as well as the contribution of uncracked concrete are both enhanced through increasing the area of concrete in compression. Additionally, increasing the reinforcement ratio enhances the dowel action, which reduces the tensile stresses produced in the surrounding concrete.
References
ACI440.1R-15. (2015). Guide for the Design and Construction of Structural Concrete Reinforced with Fiber-Reinforced Polymer (FRP) Bars. American Concrete Institute (ACI), Michigan, United States.
Ali, A. H., Mohamed, H. M., & Benmokrane, B. (2016). Shear Behavior of Circular Concrete Members Reinforced with GFRP Bars and Spirals at Shear Spanto-Depth Ratios between 1.5 and 3.0. Journal of Composites for Construction, 20(6). DOI: https://doi.org/10.1061/(ASCE)CC.1943-5614.0000707
Arosio, V., Arrigoni, A., & Dotelli, G. (2019). Reducing water footprint of building sector: Concrete with seawater and marine aggregates. IOP Conference Series: Earth and Environmental Science, 323(1), 12127. DOI: https://doi.org/10.1088/1755-1315/323/1/012127
Cadenazzi, T., Dotelli, G., Rossini, M., Nolan, S., & Nanni, A. (2019). Life-cycle cost and life-cycle assessment analysis at the design stage of a fiberreinforced polymer-reinforced concrete bridge in Florida. Advances in Civil Engineering Materials, 8(2),20180113. DOI: https://doi.org/10.1520/ACEM20180113
Chen, L., Qu, W., & Zhu, P. (2016). Life cycle analysis for concrete beams designed with cross-sections of equal durability. Structural Concrete, 17(2), 274–286. DOI: https://doi.org/10.1002/suco.201400117
CSA-S806. (2012). Design and Construction of Building Components with FibreReinforced Polymers. Canadian Standards Association (CSA). Toronto, Canada.
CSA-S807. (2010). Specification for Fibre-Reinforced Polymers. Canadian Standards Association (CSA). Toronto, Canada.
D’Antino, T., & Pisani, M. A. (2019). Long-term behavior of GFRP reinforcing bars. Composite Structures, 227, 111283. DOI: https://doi.org/10.1016/j.compstruct.2019.111283
Dhondy, T., Remennikov, A., & Shiekh, M. N. (2019). Benefits of using sea sand and seawater in concrete: a comprehensive review. Australian Journal of Structural Engineering, 20(4), 280–289. DOI: https://doi.org/10.1080/13287982.2019.1659213
El-Hassan, H., El-Maaddawy, T., Al-Sallamin, A., & Al-Saidy, A. (2017). Performance evaluation and microstructural characterization of GFRP bars in seawater-contaminated concrete. Construction and Building Materials, 147, 66–78. DOI: https://doi.org/10.1016/j.conbuildmat.2017.04.135
El-Hassan, H., El-Maaddawy, T., Al-Sallamin, A., & Al-Saidy, A. (2018). Durability of glass fiber-reinforced polymer bars conditioned in moist seawater-contaminated concrete under sustained load. Construction and Building Materials, 175, 1–13. DOI: https://doi.org/10.1016/j.conbuildmat.2018.04.107
El-Sayed, A. A. (2007). Concrete contribution to the shear resistance of FRPreinforced concrete beams. PhD Thesis, Université de Sherbrook, Sherbrook, Canada.
Gouda, A., Ali, A. H., Mohamed, H. M., & Benmokrane, B. (2022). Analysis of circular concrete members reinforced with composite glass-FRP spirals. Composite Structures, 297, 115921. DOI: https://doi.org/10.1016/j.compstruct.2022.115921
Hoult, N. A., Sherwood, E. G., Bentz, E. C., & Collins, M. P. (2008). Does the Use of FRP Reinforcement Change the One-Way Shear Behavior of Reinforced Concrete Slabs? . Journal of Composites for Construction, 12(2), 125–133. DOI: https://doi.org/10.1061/(ASCE)1090-0268(2008)12:2(125)
JSCE. (1997). Recommendation for design and construction of concrete structures using continuous fiber reinforcing materials. Japan Society of Civil Engineers, Tokyo, Japan.
Khatibmasjedi, M. (2018). Sustainable concrete using seawater and glass fiber reinforced polymer bars. PhD Thesis, University of Miami, Coral Gables, United States.
Li, L. G., Chen, X. Q., Chu, S. H., Ouyang, Y., & Kwan, A. K. (2019). Seawater cement paste: Effects of seawater and roles of water film thickness and superplasticizer dosage. Construction and Building Materials, 229, 116862. DOI: https://doi.org/10.1016/j.conbuildmat.2019.116862
MacGregor, J. K., & Wight, J. G. (2005). Reinforced Concrete: Mechanics and Design (4th Ed.). Prentice-Hall, Upper Saddle River, United States.
Nanni, A. (2005). Guide for the Design and Construction of Concrete Reinforced with FRP Bars (ACI 440.1R-03). Structures Congress. DOI: https://doi.org/10.1061/40753(171)158
Nishida, T., Otsuki, N., Ohara, H., Garba-Say, Z. M., & Nagata, T. (2015). Some Considerations for Applicability of Seawater as Mixing Water in Concrete. Journal of Materials in Civil Engineering, 27(7). DOI: https://doi.org/10.1061/(ASCE)MT.1943-5533.0001006
Ramesh, B., Eswari, S., & Sundararajan, T. (2021). Experimental and numerical studies on the flexural behaviour of GFRP laminated hybrid-fibre-reinforced concrete (HFRC) beams. Innovative Infrastructure Solutions, 6, 1-13. DOI: https://doi.org/10.1007/s41062-020-00374-z
Razaqpur, A. G., & Isgor, O. B. (2006). Proposed shear design method for FRPreinforced concrete members without stirrups. ACI Structural Journal, 103(1), 93. DOI: https://doi.org/10.14359/15090
Torsion, A.-A. C. (1998). Recent approaches to shear design of structural concrete. Journal of structural engineering, 124(12), 1375-1417. DOI: https://doi.org/10.1061/(ASCE)0733-9445(1998)124:12(1375)
Tureyen, A. K., & Frosch, R. J. (2002). Shear tests of FRP-reinforced concrete beams without stirrups. Structural Journal, 99(4), 427-434. DOI: https://doi.org/10.14359/12111
Xiao, J., Qiang, C., Nanni, A., & Zhang, K. (2017). Use of sea-sand and seawater in concrete construction: Current status and future opportunities. Construction and Building Materials, 155, 1101–1111. DOI: https://doi.org/10.1016/j.conbuildmat.2017.08.130
Yost, J. R., Goodspeed, C. H., & Schmeckpeper, E. R. (2001). Flexural Performance of Concrete Beams Reinforced with FRP Grids. Journal of Composites for Construction, 5(1), 18–25. DOI: https://doi.org/10.1061/(ASCE)1090-0268(2001)5:1(18)
Younis, A., Ebead, U., & Judd, S. (2018). Life cycle cost analysis of structural concrete using seawater, recycled concrete aggregate, and GFRP reinforcement. Construction and Building Materials, 175, 152–160. DOI: https://doi.org/10.1016/j.conbuildmat.2018.04.183
Younis, A., Ebead, U., Suraneni, P., & Nanni, A. (2018). Fresh and hardened properties of seawater-mixed concrete. Construction and Building Materials, 190, 276–286. DOI: https://doi.org/10.1016/j.conbuildmat.2018.09.126
Zhang, C., Lin, W. X., Abududdin, M., & Canning, L. (2011). Environmental
Evaluation of FRP in UK Highway Bridge Deck Replacement Applications Based on a Comparative LCA Study. Advanced Materials Research, 374– 377, 43–48. DOI: https://doi.org/10.4028/www.scientific.net/AMR.374-377.43
