Experimental Study of Concrete Columns with Localized Failure
Publication: Journal of Composites for Construction
Volume 20, Issue 5
Abstract
To study the stress-strain behavior of axially loaded fiber-reinforced polymer (FRP)–confined concrete columns in the event of a localized failure, 32 circular concrete cylinders were tested with heavy instrumentations. The test specimens had a diameter of 150 mm and a length varying from 300 to 700 mm. Another test variable was confinement, of which 6 different levels were used. To identify the localized failure zone and its effect, a large number of electrical strain gauges and digital image correlation (DIC) techniques were used to capture strain variation along the full height of the cylinders. Measured strain fields and local load-deformation curves were used to identify the length of the zone and the compression fracture energy required for stress-strain modeling of columns with failure localization. The test results show that both the length of the failure zone and the compression fracture energy increase when confinement increases. The experimental results from this work provide adequate data and information for development of a stress-strain model of FRP-confined concrete columns involving failure localization.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The work described in this paper was fully supported by a grant from the Hong Kong Construction Industry Council (Project No. CICR/09/13) and the National Natural Science Foundation of China (Grant No. 51378449).
References
ACI (American Concrete Institute). (2005). “ACI Committee 318: Building code requirements for structural concrete and commentary.” ACI 318M-05, Farmington Hills, MI.
Akiyama, M., Suzuki, M., and Frangopol, D. M. (2010). “Stress-averaged strain model for confined high-strength concrete.” ACI Struct. J., 107(2), 179–188.
Attard, M., and Setunge, S. (1996). “Stress-strain relationship of confined and unconfined concrete.” ACI Mater. J., 93(5), 432–442.
Binici, B. (2005). “An analytical model for stress-strain behavior of confined concrete.” Eng. Struct., 27(7), 1040–1051.
Jansen, D. C., and Shah, S. P. (1997). “Effect of length on compressive strain softening of concrete.” J. Eng. Mech., 25–35.
Jansen, D. C., Shah, S. P., and Rossow, E. C. (1995). “Stress-strain results of concrete from circumferential strain feedback control testing.” ACI Mater. J., 92(4), 419–428.
Jiang, C., Wu, Y. F., and Wu, G. (2014). “Plastic hinge length of FRP-confined square RC columns.” J. Compos. Constr., 04014003.
Lertsrisakulrat, T., Watanabe, K., Matsuo, M., and Niwa, J. (2001). “Experimental study on parameters in localization of concrete subjected to compression.” J. Mater. Concr. Struct. Pavements, 50(669), 309–321.
Mansur, M., Wee, T., and Chin, M. (1995). “Derivation of the complete stress-strain curves for concrete in compression.” Mag. Concr. Res., 47(173), 285–290.
Markeset, G., and Hillerborg, A. (1995). “Softening of concrete in compression—Localization and size effects.” Cem. Concr. Res., 25(4), 702–708.
Nakamura, H., and Higai, T. (2001). “Compressive fracture energy and fracture zone length of concrete.” Modeling of inelastic behavior of RC structures under seismic loads, ASCE, Reston, VA, 471–487.
Rokugo, K., and Koyanagi, W. (1992). “Role of compressive fracture energy of concrete on the failure behaviour of reinforced concrete beams.” Application of fracture mechanics to reinforced concrete, A. Carpenteri, ed., Elsevier Applied Science, Turin, Italy, 437–464.
Samani, A. K., and Attard, M. M. (2012). “A stress-strain model for uniaxial and confined concrete under compression.” Eng. Struct., 41, 335–349.
Van Geel, E. (1998). “Concrete behaviour in multiaxial compression: Experimental research.” Eindhoven Univ., Eindhoven, Netherlands.
Van Mier, J. G. M. (1984). “Strain-softening of concrete under multiaxial loading conditions.” Technische Hogeschool Eindhoven, Eindhoven, Netherlands.
VIC-3D [Computer software]. Correlated Solutions, Irmo, SC.
Vonk, R. (1992). “Softening of concrete loaded in compression.” Eindhoven Univ. of Technology, Eindhoven, Netherlands.
Watanabe, K., Niwa, J., Yokota, H., and Iwanami, M. (2004). “Experimental study on stress-strain curve of concrete considering localized failure in compression.” J. Adv. Concr. Technol., 2(3), 395–407.
Weibull, W. (1951). “A statistical distribution function of wide applicability.” J. Appl. Mech., 18(3), 293–297.
Wu, Y. F., He, L., and Bank, L. C. (2015). “Bond-test protocol for plate-to-concrete interface involving all mechanisms.” J. Compos. Constr., 04015022.
Wu, Y. F., and Wei, Y. (2015). “Stress-strain modeling of concrete columns with localized failure: An analytical study.” J. Compos. Constr., 04015071.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 20 • Issue 5 • October 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Oct 29, 2015
Accepted: Jan 7, 2016
Published online: Mar 17, 2016
Discussion open until: Aug 17, 2016
Published in print: Oct 1, 2016
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.