Concrete-Filled FRP Tubes: Manufacture and Testing of New Forms Designed for Improved Performance
Publication: Journal of Composites for Construction
Volume 17, Issue 2
Abstract
This paper reports on the development and testing of three new concrete-filled fiber-reinforced polymer (FRP) tube (CFFT) systems. These CFFT systems were designed to enhance the effectiveness of square and rectangular FRP tubes in confining concrete. In the design of the rectangular CFFTs two different enhancement techniques were considered; namely, corner strengthening and provision of an internal FRP panel. The technique used in the development of the square CFFT system involved the incorporation of four internal concrete-filled FRP cylinders as an integral part of the CFFT. The performance of these systems was investigated experimentally through axial compression tests of 10 unique CFFTs. The results of the experimental study indicate that the new CFFT systems presented in this paper offer significantly improved performance relative to conventional CFFTs with similar material and geometric properties. Examination of the test results have led to a number of significant conclusions with respect to the confinement effectiveness of each new CFFT system. These results are presented and a discussion is provided on the parameters that influenced the compressive behavior of these CFFT systems.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The author thanks Ms. Sadri and Messrs. Haigh, Kohler, and Richter, who have undertaken the tests reported in this paper as part of their undergraduate theses. This research is part of an ongoing program at the University of Adelaide on FRP-concrete composite columns.
References
ASTM. (2008). “Standard test method for tensile properties of polymer matrix composite materials.” ASTM D3039/D3039M-8, West Conshohocken, PA, 13.
Bisby, L. A., Dent, A. J. S., and Green, M. F. (2005). “Comparison of confinement models for fiber-reinforced polymer-wrapped concrete.” ACI Struct. J., 102(1), 62–72.
Chaallal, O., Hassan, M., and Shahawy, M. (2003). “Confinement model for axially loaded short rectangular columns strengthened with fiber reinforced polymer wrapping.” ACI Struct J., 100(2), 215–221.
Fam, A. Z., and Rizkalla, S. H. (2001). “Behavior of axially loaded concrete-filled circular fiber-reinforced polymer tubes.” ACI Struct. J., 98(3), 280–289.
Fam, A. Z., and Rizkalla, S. H. (2002). “Flexural behavior of concrete-filled fiber reinforced polymer circular tubes.” J. Compos. Constr., 6(2), 123–132.
Fam, A., Schnerch, D., and Rizkalla, S. (2005). “Rectangular filament-wound GFRP tubes filled with concrete under flexural and axial loading: Experimental investigation.” J. Compos. Constr., 9(1), 25–33.
Hadi, M. N. S. (2006). “Behaviour of FRP wrapped normal strength concrete columns under eccentric loading.” J. Compos. Struct., 72(4), 503–511.
Ilki, A., Peker, O., Karamuk, E., Demir, C., and Kumbasar, N. (2008). “FRP retrofit of low and medium strength circular and rectangular reinforced concrete columns.” J. Mater. Civ. Eng., 20(2), 169–188.
Lam, L., and Teng, J. G. (2003). “Design-oriented stress-strain model for FRP-confined concrete in rectangular columns.” J. Reinf. Plast. Compos., 22(13), 1149–1186.
Lam, L., and Teng, J. G. (2004). “Ultimate condition of fiber reinforced polymer-confined concrete.” J. Compos. Constr., 8(6), 539–548.
Mirmiran, A., Shahawy, M., and Beitleman, T. (2001). “Slenderness limit for hybrid FRP-concrete columns.” J. Compos. Constr., 5(1), 26–34.
Mirmiran, A., Shahawy, M., Samaan, M., El Echary, H., Mastrapa, J. C., and Pico, O. (1998). “Effect of column parameters on FRP-confined concrete.” J. Compos. Constr., 2(4), 175–185.
Mohamed, H., and Masmoudi, R. (2010). “Axial load capacity of concrete-filled FRP tube columns: Experimental versus predictions.” J. Compos. Constr., 14(2), 231–243.
Ozbakkaloglu, T. (2012). “Axial compressive behavior of square and rectangular high-strength concrete-filled FRP tubes.” J. Compos. Constr., 17(1), 151–161.
Ozbakkaloglu, T., and Akin, E. (2012). “Behavior of FRP-confined normal- and high-strength concrete under cyclic axial compression.” J. Compos. Constr., 16(4), 451–463.
Ozbakkaloglu, T., and Oehlers, D. J. (2008a). “Concrete-filled square and rectangular FRP tubes under axial compression.” J. Compos. Constr., 12(4), 469–477.
Ozbakkaloglu, T., and Oehlers, D. J. (2008b). “Manufacture and testing of a novel FRP tube confinement system.” Eng. Struct., 30(9), 2448–2459.
Ozbakkaloglu, T., and Saatcioglu, M. (2004). “Rectangular stress block for high-strength concrete.” ACI Struct. J., 101(4), 475–483.
Ozbakkaloglu, T., and Saatcioglu, M. (2006). “Seismic behavior of high-strength concrete columns confined by fiber reinforced polymer tubes.” J. Compos. Constr., 10(6), 538–549.
Ozbakkaloglu, T., and Saatcioglu, M. (2007). “Seismic performance of square high-strength concrete columns in FRP stay-in-place formwork.” J. Struct. Eng., 133(1), 44–56.
Ozcan, O., Binici, B., and Ozcebe, G. (2010). “Seismic strengthening of rectangular reinforced concrete columns using fiber reinforced polymers.” Eng. Struct., 32(4), 964–973.
Rochette, P., and Labossiere, P. (2000). “Axial testing of rectangular column models confined with composites.” J. Compos. Constr., 4(3), 129–136.
Saatcioglu, M., Ozbakkaloglu, T., and Elnabelsy, G. (2008). “Seismic behavior and design of reinforced concrete columns confined with FRP stay-in-place formwork.”, Detroit, 145–165.
Seible, F., Karbhari, V. M., and Burgueno, R. (1999). “Kings stormwater channel and I-5/Gilman bridges, USA.” Struct. Eng. Int., 9(4), 250–253.
Shao, Y., and Mirmiran, A. (2005). “Experimental investigation of cyclic behavior of concrete-filled FRP tubes.” J. Compos. Constr., 9(3), 263–273.
Teng, J. G., Huang, Y. L., Lam, L., and Ye, L. (2007). “Theoretical model for fiber reinforced polymer confined concrete.” J. Compos. Constr., 11(2), 201–210.
Teng, J. G., Jiang, T., Lam, L., and Luo, Y. (2009). “Refinement of a design-oriented stress-strain model for FRP-confined concrete.” J. Compos. Constr., 13(4), 269–278.
Wang, L. M., and Wu, Y. F. (2008). “Effect of corner radius on the performance of CFRP-confined square concrete columns: Test.” Eng. Struct., 30(2), 493–505.
Wang, Z. Y., Wang, D. Y., Smith, S. T., and Lu, D. G. (2012). “CFRP-confined square RC columns. I: Experimental investigation.” J. Compos. Constr., 16(2), 150–160.
Wei, Y. Y., and Wu, Y. F. (2012). “Unified stress–strain model of concrete for FRP-confined columns.” Constr. Build. Mater., 26(1), 381–392.
Wu, Y. F., and Wei, Y. Y. (2010). “Effect of cross-sectional aspect ratio on the strength of CFRP-confined rectangular concrete columns.” Eng. Struct., 32(1), 32–45.
Yamakawa, T., Zhong, P., and Ohama, A. (2003). “Seismic performance of aramid fiber square tubed concrete columns with metallic and/or non-metallic reinforcement.” J. Reinf. Plast. Compos., 22(13), 1221–1237.
Youssef, M. N., Feng, M. Q., and Mosallam, A. S. (2007). “Stress-strain model for concrete confined by FRP composites.” Compos. Part B Eng., 38(5–6), 614–628.
Zaghi, A. E., Saiidi, M. S., and Mirmiran, A. (2012). “Shake table response and analysis of a concrete-filled FRP tube bridge column.” Compos. Struct., 94(5), 1564–1574.
Information & Authors
Information
Published In
Copyright
© 2013 American Society of Civil Engineers.
History
Received: May 30, 2012
Accepted: Sep 18, 2012
Published online: Sep 20, 2012
Published in print: Apr 1, 2013
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.