Influence of Fiber Type on Behavior of High-Strength Concrete-Filled FRP Tubes under Concentric Compression

Abstract:

This paper presents results from an experimental study on the behavior of circular high-strength concrete (HSC)-filled fiber reinforced polymer (FRP) tubes (HSCFFTs). Concrete-filled FRP tubes (CFFTs) have received significant research attention over the last two decades and experimental investigations into the axial behavior are abundant for normal-strength concretes (NSC) confined by either carbon FRP (CFRP) or class FRP (GFRP). However, the same cannot be said for CFFTs filled with HSC or manufactured with other fiber types such as aramid or high-modulus carbon FRP (AFRP and HMCFRP), where experimental testing is very limited. To address this research gap, this study examined the compressive behavior of 24 test specimens prepared with three different fiber types (CFRP, HMCFRP and AFRP) and manufactured with HSC. The experimentally recorded stress-strain relationships are presented graphically and the influence of fiber type and other key experimental outcomes are discussed. The results indicate that fiber type has a significant influence on the axial compressive behavior of HSCFFTs.

• Periodical: Applied Mechanics and Materials (Volumes 438-439)
• Pages: 240-245
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.438-439.240
• Online since: October 2013
• Authors: Thomas Vincent, Togay Ozbakkaloglu
• Keywords: Concrete-Filled FRP Tube (CFFT), Confinement, Fiber Reinforced Polymer (FRP), Fiber Type, High-Strength Concrete (HSC)

References

[1] T. Ozbakkaloglu, J. C. Lim, T. Vincent, FRP-Confined concrete in circular sections: review and assessment of stress-strain models, Eng. Struct., 49 (2013) 1068 - 1088.

DOI: 10.1016/j.engstruct.2012.06.010

[2] T. Ozbakkaloglu, , D. J. Oehlers, Concrete-filled square and rectangular FRP tubes under axial compression, ASCE J. Compos. Constr., Vol. 12 4 (2008) 469 - 477.

DOI: 10.1061/(asce)1090-0268(2008)12:4(469)

[3] T. Ozbakkaloglu, D. J. Oehlers, Manufacture and testing of a novel FRP tube confinement system, Engineering Structures, Vol. 30 9 (2008) 2448-2459.

DOI: 10.1016/j.engstruct.2008.01.014

[4] T. Ozbakkaloglu, Axial compressive behavior of square and rectangular high- strength concrete-filled FRP tubes, ASCE J. Compos. Constr., Vol. 17 1 (2013) 151-161.

DOI: 10.1061/(asce)cc.1943-5614.0000321

[5] T. Ozbakkaloglu, Compressive behavior of concrete-filled FRP tube columns: Assessment of critical column parameters, Eng. Struct., 51 (2013) 188-199.

DOI: 10.1016/j.engstruct.2013.01.017

[6] T. Ozbakkaloglu, Concrete-filled FRP tubes: Manufacture and testing of new forms designed for improved performance, ASCE J. Compos. Constr., Vol. 17 2 (2013) 280 - 291.

DOI: 10.1061/(asce)cc.1943-5614.0000334

[7] T. Ozbakkaloglu, Behavior of square and rectangular ultra high-strength concrete-filled FRP tubes under axial compression, Composites Part B, 54 (2013) 97-111.

DOI: 10.1016/j.compositesb.2013.05.007

[8] T. Ozbakkaloglu, M. Saatcioglu, Seismic behavior of high-strength concrete Columns confined by fiber reinforced polymer tubes, Journal of Composites for Construction, ASCE, Vol. 10 6 (2006) 538-549.

DOI: 10.1061/(asce)1090-0268(2006)10:6(538)

[9] T. Ozbakkaloglu, M. Saatcioglu, Seismic performance of square high-strength concrete columns in FRP stay-in-place formwork, Journal of Structural Engineering, ASCE, Vol. 133 1 (2007) 44-56.

DOI: 10.1061/(asce)0733-9445(2007)133:1(44)

[10] M. Saatcioglu, T. Ozbakkaloglu, G. Elnabelsy, Seismic behavior and design of reinforced concrete columns confined with FRP stay-in-place formwork, ACI Special Publication SP-257, (2009) 149-170.

DOI: 10.14359/20245

[11] Y. Idris, T. Ozbakkaloglu, Seismic behavior of square high-strength concrete-filled FRP tube columns, J. Compos. Constr., ASCE, (2013) 10. 1061/(ASCE)CC. 1943-5614. 0000388.

DOI: 10.1061/(asce)cc.1943-5614.0000388

[12] Q. Xiao, J. Teng, T. Yu, Behavior and modeling of confined high-strength concrete, ASCE J. Compos. Constr., Vol. 14 3 (2010) 249–59.

DOI: 10.1061/(asce)cc.1943-5614.0000070

[13] T. Ozbakkaloglu, E. Akin, Behavior of FRP-confined normal- and high-strength concrete under cyclic axial compression, ASCE J. Compos. Constr., Vol. 16 4 (2012) 451-63.

DOI: 10.1061/(asce)cc.1943-5614.0000273

[14] T. Vincent, T. Ozbakkaloglu, Influence of concrete strength and confinement method on axial compressive behavior of FRP confined high- and ultra high- strength concrete, Composites Part B, 50 (2013) 413-428.

DOI: 10.1016/j.compositesb.2013.02.017