Title:
Effect of Slenderness Ratio on Glass Fiber-Reinforced Polymer-Reinforced High-Strength Concrete Columns
Author(s):
Mu’taz Almomani, Karam Mahmoud, and Ehab F. El-Salakawy
Publication:
Structural Journal
Volume:
119
Issue:
2
Appears on pages(s):
287-299
Keywords:
bending; eccentric loading; glass fiber-reinforced polymer (GFRP) bars and spirals; high-strength concrete (HSC); short columns; slender columns
DOI:
10.14359/51734343
Date:
3/1/2022
Abstract:
This paper presents the results of eight large-scale high-strength concrete (HSC) columns reinforced internally with glass fiber-reinforced polymer (GFRP) bars and spirals. The effects of the
slenderness ratio and the eccentricity-to-diameter ratio (e/D) on the behavior of HSC columns that meet the minimum code requirements are evaluated. Additionally, the column behavior was investigated under pure flexural loading. Test results indicated that
increasing the e/D or the slenderness ratio resulted in a decrease in the axial and lateral stiffness and the axial capacity of the HSC columns. All tested columns exhibited a material-type failure, which is characterized by the crushing of concrete. Furthermore, compressive strains measured in the GFRP bars indicated their contribution to the column axial capacity. In addition, an interaction diagram was developed and compared to the predictions of the available codes and guidelines.
Related References:
Abdelazim, W. M. A., 2020, “Behavior of Slender Concrete Columns Reinforced with GFRP-Bars And Spirals Under Concentric and Eccentric Loads,” PhD thesis, Department of Civil Engineering, Université de Sherbrooke, Sherbrooke, QC, Canada, 243 pp.
ACI Committee 222, 2019, “Guide to Protection of Metals in Concrete Against Corrosion (ACI 222R-19),” American Concrete Institute, Farmington Hills, MI, 60 pp.
ACI Committee 318, 2019, “Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-19),” American Concrete Institute, Farmington Hills, MI, 624 pp.
ACI Committee 440, 2015, “Guide for the Design and Construction of Structural Concrete Reinforced with Fiber-Reinforced Polymer (FRP) Bars (ACI 440.1R-15),” American Concrete Institute, Farmington Hills, MI, 88 pp.
Afifi, M. Z.; Mohamed, H. M.; and Benmokrane, B., 2014, “Axial Capacity of Circular Concrete Columns Reinforced with GFRP Bars and Spirals,” Journal of Composites for Construction, ASCE, V. 18, No. 1, Feb., p. 04013017. doi: 10.1061/(ASCE)CC.1943-5614.0000438
Ali, M. A., and El-Salakawy, E., 2016, “Seismic Performance of GFRP-Reinforced Concrete Rectangular Columns,” Journal of Composites for Construction, ASCE, V. 20, No. 3, June, p. 04015074. doi: 10.1061/(ASCE)CC.1943-5614.0000637
Bakht, B.; Mufti, A. A.; and Tadros, G., 2004, “Discussion of ‘Fibre-Reinforced Polymer Composite Bars for the Concrete Deck Slab of Wotton Bridge’,” Canadian Journal of Civil Engineering, V. 31, No. 3, June, pp. 530-531.
Barua, S., and El-Salakawy, E., 2020, “Performance of GFRP-Reinforced Concrete Circular Short Columns under Concentric, Eccentric, and Flexural Loads,” Journal of Composites for Construction, ASCE, V. 24, No. 5, Oct., p. 04020044. doi: 10.1061/(ASCE)CC.1943-5614.0001058
Barua, S.; Mahmoud, K.; and El-Salakawy, E., 2021, “Slender GFRP-RC Circular Columns under Concentric, Eccentric, and Flexural Loads: Experimental Investigation,” Journal of Bridge Engineering, ASCE, V. 26, No. 7, July, p. 04021033. doi: 10.1061/(ASCE)BE.1943-5592.0001729
Broms, B., and Viest, I. M., 1961, “Long Columns: Ultimate Strength of Hinged Columns,” Transactions of the American Society of Civil Engineers, ASCE, V. 126, No. 2, Jan., pp. 308-400.
CSA A23.1-19/CSA A23.2-19, 2019, “Concrete Materials and Methods of Concrete Construction/Test Methods and Standard Practices for Concrete,” Canadian Standards Association, Toronto, ON, Canada, 882 pp.
CSA S6-19, 2019, “Canadian Highway Bridge Design Code,” Canadian Standards Association, Toronto, ON, Canada, 1182 pp.
CSA S806-12 (R2017), 2017, “Design and Construction of Building Structures with Fibre-Reinforced Polymers,” Canadian Standards Association, Toronto, ON, Canada, 206 pp.
CSA S807-19, 2019, “Specification for Fibre-Reinforced Polymers,” Canadian Standards Association, Toronto, ON, Canada, 67 pp.
De Luca, A.; Matta, F.; and Nanni, A., 2010, “Behavior of Full-Scale Glass Fiber-Reinforced Polymer Reinforced Concrete Columns under Axial Load,” ACI Structural Journal, V. 107, No. 5, Sept.-Oct., pp. 589-596.
El-Gendy, M. G., and El-Salakawy, E., 2016, “Effect of Shear Studs and High Moments on Punching Behavior of GFRP-RC Slab–Column Edge Connections,” Journal of Composites for Construction, ASCE, V. 20, No. 4, Aug., p. 04016007. doi: 10.1061/(ASCE)CC.1943-5614.0000668
Elchalakani, M.; Dong, M.; Karrech, A.; Sadakkathulla, M. A.; and Huo, J.-S., 2020, “Circular Concrete Columns and Beams Reinforced with GFRP Bars and Spirals under Axial, Eccentric, and Flexural Loading,” Journal of Composites for Construction, ASCE, V. 24, No. 3, June, p. 04020008. doi: 10.1061/(ASCE)CC.1943-5614.0001008
Foster, S. J., and Attard, M. M., 1997, “Experimental Tests on Eccentrically Loaded High-Strength Concrete Columns,” ACI Structural Journal, V. 94, No. 3, May-June, pp. 295-302.
Ghomi, S. K., and El-Salakawy, E., 2016, “Seismic Performance of GFRP-RC Exterior Beam–Column Joints with Lateral Beams,” Journal of Composites for Construction, ASCE, V. 20, No. 1, Feb., p. 04015019. doi: 10.1061/(ASCE)CC.1943-5614.0000582
Hadhood, A., 2017, “Behavior, Strength and Flexural Stiffness of Circular Concrete Columns Reinforced with FRP Bars and Spirals/Hoops under Eccentric Loading,” PhD thesis, Department of Civil Engineering, Université de Sherbrooke, Sherbrooke, QC, Canada, 302 pp.
Hadi, M. N. S.; Hasan, H. A.; and Sheikh, M. N., 2017, “Experimental Investigation of Circular High-Strength Concrete Columns Reinforced with Glass Fiber-Reinforced Polymer Bars and Helices under Different Loading Conditions,” Journal of Composites for Construction, ACSE, V. 21, No. 4, Aug., p. 04017005. doi: 10.1061/(ASCE)CC.1943-5614.0000784
Hales, T. A.; Pantelides, C. P.; and Reaveley, L. D., 2016, “Experimental Evaluation of Slender High-Strength Concrete Columns with GFRP and Hybrid Reinforcement,” Journal of Composites for Construction, ASCE, V. 20, No. 6, Dec., p. 04016050. doi: 10.1061/(ASCE)CC.1943-5614.0000709
Hossain, K. M. A.; Ametrano, D.; and Lachemi, M., 2014, “Bond Strength of Standard and High-Modulus GFRP Bars in High-Strength Concrete,” Journal of Materials in Civil Engineering, ACSE, V. 26, No. 3, Mar., pp. 449-456.
Khorramian, K., and Sadeghian, P., 2020, “Experimental Investigation of Short and Slender Rectangular Concrete Columns Reinforced with GFRP Bars under Eccentric Axial Loads,” Journal of Composites for Construction, ASCE, V. 24, No. 6, Dec., p. 04020072. doi: 10.1061/(ASCE)CC.1943-5614.0001088
Mahmoud, K., and El-Salakawy, E., 2016, “Size Effect on Shear Strength of Glass Fiber-Reinforced Polymer-Reinforced Concrete Continuous Beams,” ACI Structural Journal, V. 113, No. 1, Jan.-Feb., pp. 125-134. doi: 10.14359/51688065
Mirmiran, A.; Yuan, W.; and Chen, X., 2001, “Design for Slenderness in Concrete Columns Internally Reinforced with Fiber-Reinforced Polymer Bars,” ACI Structural Journal, V. 98, No. 1, Jan.-Feb., pp. 116-125.
Park, R., and Paulay, T., 1975, Reinforced Concrete Structures, John Wiley & Sons, Inc., Hoboken, NJ.
Rahman, S. M. H.; Mahmoud, K.; and El-Salakawy, E., 2017, “Behavior of Glass Fiber–Reinforced Polymer Reinforced Concrete Continuous T-Beams,” Journal of Composites for Construction, ASCE, V. 21, No. 2, Apr., p. 04016085. doi: 10.1061/(ASCE)CC.1943-5614.0000740
Thorenfeldt, E.; Tomaszewicz, A.; and Jensen, J. J., 1987, “Mechanical Properties of High Strength Concrete and Application to Design,” Proceedings, Utilization of High-Strength Concrete: Symposium, Stavanger, Norway, pp. 149-159.