Advances in concrete construction

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Damage-based stress-strain model of RC cylinders wrapped with CFRP composites

  • Received : 2017.07.12
  • Accepted : 2017.09.19
  • Published : 2017.10.25
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Abstract

In this study, the effects of initial damage of concrete columns on the post-repair performance of reinforced concrete (RC) columns strengthened with carbon-fiber-reinforced polymer (CFRP) composite are investigated experimentally. Four kinds of compression-damaged RC cylinders were reinforced using external CFRP composite wraps, and the stress-strain behavior of the composite/concrete system was investigated. These concrete cylinders were compressed to four pre-damaged states including low -level, medium -level, high -level and total damage states. The percentages of the stress levels of pre-damage were, respectively, 40, 60, 80, and 100% of that of the control RC cylinder. These damaged concrete cylinders simulate bridge piers or building columns subjected to different magnitudes of stress, or at various stages in long-term behavior. Experimental data, as well as a stress-strain model proposed for the behavior of damaged and undamaged concrete strengthened by external CFRP composite sheets are presented. The experimental data shows that external confinement of concrete by CFRP composite wrap significantly improves both compressive strength and ductility of concrete, though the improvement is inversely proportional to the initial degree of damage to the concrete. The failure modes of the composite/damaged concrete systems were examined to evaluate the benefit of this reinforcing methodology. Results predicted by the model showed very good agreement with those of the current experimental program.

Keywords

References

  1. Almusallam, T.H. (2007), "Behavior of normal and high-strength concrete cylinders confined with E-glass/epoxy composite laminates", Compos. Part B, 38, 629-639.
  2. Benzaid, R. and Mesbah, H.A. (2013), "Strength model for square concrete columns confined by external CFRP sheets", Struct. Eng. Mech., 46(1), 111-135. https://doi.org/10.12989/sem.2013.46.1.111
  3. Benzaid, R. and Mesbah, H.A. (2014), "The confinement of concrete in compression using CFRP composites-effective design equations", J. Civil Eng. Manage., 20(5), 632-648. https://doi.org/10.3846/13923730.2013.801911
  4. Benzaid, R., Chikh, N.E. and Mesbah, H. (2008), "Behaviour of square concrete columns confined with GFRP composite wrap", J. Civil Eng. Manage., 14(2), 115-120. https://doi.org/10.3846/1392-3730.2008.14.6
  5. Benzaid, R., Mesbah, H. and Chikh, N.E. (2010), "FRP-confined concrete cylinders: Axial compression experiments and strength model", J. Reinf. Plast. Compos., 29(16), 2469-2488. https://doi.org/10.1177/0731684409355199
  6. Campione, G., Miraglia, N. and Papia, M. (2004), "Strength and strain enhancements of concrete columns confined with FRP sheets", J. Struct. Eng. Mech., 18(6), 769-790. https://doi.org/10.12989/sem.2004.18.6.769
  7. Chaallal, O., Hassen, M. and Shahawy, M. (2003), "Confinement model for axially loaded short rectangular columns strengthened with FRP polymer wrapping", ACI Struct. J., 100(2), 215-221.
  8. Chikh, N.E., Benzaid, R. and Mesbah, H.A. (2012), "An experimental investigation of circular RC columns with various slenderness confined with CFRP sheets", Arab. J. Sci. Eng., 37(2), 315-323. https://doi.org/10.1007/s13369-012-0176-7
  9. Choi, E., Kim, J.W., Rhee, I. and Kang, J.W. (2014), "Behavior and modeling of confined concrete cylinders in axial compression using FRP rings", Compos. Part B, 58, 175-184. https://doi.org/10.1016/j.compositesb.2013.10.031
  10. Colajanni, P., Fossetti, M. and Macaluso, G. (2014), "Effect of confinement level, cross-section shape and corner radius on the cyclic behavior of CFRCM confined concrete columns", Constr. Build. Mater., 55, 379-389. https://doi.org/10.1016/j.conbuildmat.2014.01.035
  11. Comby Peyrot, I. (2006), "Development and validation of a 3D computational tool to describe damage and fracture due to alkali silica reaction in concrete structures", Ph.D. Dissertation, Ecole des Mines de Paris, France.
  12. Dan, D. (2012), "Experimental tests on seismically damaged composite steel concrete walls retrofitted with CFRP composites", Eng. Struct., 45, 338-348. https://doi.org/10.1016/j.engstruct.2012.06.037
  13. De Lorenzis, L. and Tepfers, R. (2003), "Comparative study of models on confinement of concrete cylinders with fiber-reinforced polymer composites", J. Compos. Constr., 7(3), 219-234. https://doi.org/10.1061/(ASCE)1090-0268(2003)7:3(219)
  14. Demers, M. and Neale, K.W. (1999), "Confinement of reinforced concrete columns with fibre-reinforced composite sheets-an experimental study", Can. J. Civil Eng., 26, 226-241. https://doi.org/10.1139/l98-067
  15. Fahmy, M.F.M. and Wu, Z. (2010), "Evaluating and proposing models of circular concrete columns confined with different FRP composites", Compos. Part B, 41, 199-213.
  16. Guo, Y., Xie, J., Xie, Z. and Zhong, J. (2016), "Experimental study on compressive behavior of damaged normal and high-strength concrete confined with CFRP laminates", Constr. Build. Mater., 107, 411-425. https://doi.org/10.1016/j.conbuildmat.2016.01.010
  17. Guoqiang, L., Hedlund, S., Pang, S.S., Alaywan, W., Eggers, J. and Abadie, C. (2003), "Repair of damaged RC columns using fast curing FRP composites", Compos. Part B, 34, 261-271. https://doi.org/10.1016/S1359-8368(02)00101-4
  18. Ilki, A. and Kumbasar, N. (2002), "Behavior of damaged and undamaged concrete strengthened by carbon fiber composite sheets", Struct. Eng. Mech., 13(1), 75-90. https://doi.org/10.12989/sem.2002.13.1.075
  19. Ji, G., Li, G. and Alaywan, W. (2013), "A new fire-resistant FRP for externally bonded concrete repair", Constr. Build. Mater., 42, 87-96. https://doi.org/10.1016/j.conbuildmat.2013.01.008
  20. Lam, L. and Teng, J.G. (2003), "Design-oriented stress-strain model for FRP-confined concrete", Constr. Build. Mater., 17, 471-489. https://doi.org/10.1016/S0950-0618(03)00045-X
  21. Liu, H.K., Liao, W.C., Liang, T., Lee, W.H. and Sawada, Y. (2004), "Compression strength of pre-damaged concrete cylinders reinforced by non-adhesive filament wound composites", Compos. Part A, 35, 281-292. https://doi.org/10.1016/S1359-835X(03)00250-1
  22. Ma, G., Li, H. and Duan, Z. (2012), "Repair effects and acoustic emission technique-based fracture evaluation for predamaged concrete columns confined with fiber-reinforced polymers", J. Compos. Constr., 16(6), 626-639. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000309
  23. Matthys, S., Toutanji, H., Audenaert, K. and Taerwe, L. (2005), "Axial load behavior of large-scale columns confined with fiber-reinforced polymer composites", ACI Struct. J., 102(2), 258-267.
  24. Mazars, J. (1984), "Application de la mecanique de l'endommagement au comportement non lineaire et a la rupture du beton de structure", Ph.D. Dissertation, Universite Paris VI, France.
  25. Micelli, F. and Modarelli, R. (2013), "Experimental and analytical study on properties affecting the behavior of FRP-confined concrete", Compos. Part B, 45, 1420-1431. https://doi.org/10.1016/j.compositesb.2012.09.055
  26. Mirmiran, A., Shahawy, M., Samaan, M. and El Echary, H. (1998), "Effect of column parameters on FRP-confined concrete", J. Compos. Constr., 2(4), 175-185. https://doi.org/10.1061/(ASCE)1090-0268(1998)2:4(175)
  27. Peled, A. (2007), "Confinement of damaged and nondamaged structural concrete with FRP and TRC sleeves", J. Compos. Constr., 11(5), 514-522. https://doi.org/10.1061/(ASCE)1090-0268(2007)11:5(514)
  28. Piekarczyk, J., Piekarczyk, W. and Blazewicz, S. (2011), "Compression strength of concrete cylinders reinforced with carbon fiber laminate", Constr. Build. Mater., 25, 2365-2369. https://doi.org/10.1016/j.conbuildmat.2010.11.035
  29. Punurai, W., Hsu, C.T.T., Punurai, S. and Chen, J. (2013), "Biaxially loaded RC slender columns strengthened by CFRP composite fabrics", Eng. Struct., 46, 311-321. https://doi.org/10.1016/j.engstruct.2012.07.014
  30. Rabehi, B., Ghernouti, Y., Li, A. and Boumchedda, K. (2014), "Comparative behavior under compression of concrete columns repaired by fiber reinforced polymer (FRP) jacketing and ultra high-performance fiber reinforced concrete (UHPFRC)", J. Adhes. Sci. Technol., 28(22-23), 2327-2346. https://doi.org/10.1080/01694243.2014.966885
  31. Rousakis, T.C. (2014), "Elastic fiber ropes of ultrahigh-extension capacity in strengthening of concrete through confinement", J. Mater. Civil Eng., 26(1), 34-44. https://doi.org/10.1061/(ASCE)MT.1943-5533.0000796
  32. Rousakis, T.C. (2016), "Reusable and recyclable nonbonded composite tapes and ropes for concrete columns confinement", Compos. Part B, 103, 15-22. https://doi.org/10.1016/j.compositesb.2016.08.003
  33. Rousakis, T.C. and Karabinis, A.I. (2008), "Substandard reinforced concrete members subjected to compression: FRP confining effects", RILEM Mater. Struct., 41(9), 1595-1611. https://doi.org/10.1617/s11527-008-9351-4
  34. Rousakis, T.C., Karabinis, A.I., Kiousis, P.D. and Tepfers, R. (2008), "Analytical modelling of plastic behaviour of uniformly FRP confined concrete members", Compos. Part B, 39(7-8), 1104-1113. https://doi.org/10.1016/j.compositesb.2008.05.001
  35. Saadatmanesh, H., Ehsani, M.R. and Li, M.W. (1994), "Strength and ductility of concrete columns externally reinforced with composites straps", ACI Struct. J., 91(4), 434-447.
  36. Shehata, I.A.E.M., Carneiro, L.A.V. and Shehata, L.C.D. (2002), "Strength of short concrete columns confined with CFRP sheets", RILEM Mater. Struct., 35, 50-58. https://doi.org/10.1007/BF02482090
  37. Wu, G., Lu, Z.T. and Wu, Z.S. (2006), "Strength and ductility of concrete cylinders confined with FRP composites", Constr. Build. Mater., 20, 134-148. https://doi.org/10.1016/j.conbuildmat.2005.01.022
  38. Wu, Y.F. and Jiang, J.F. (2013), "Effective strain of FRP confined circular concrete columns", Compos. Struct., 95, 479-491. https://doi.org/10.1016/j.compstruct.2012.08.021
  39. Yaqub, M. and Bailey, C.G. (2011), "Repair of fire damaged circular reinforced concrete columns with FRP composites", Constr. Build. Mater., 25, 359-370. https://doi.org/10.1016/j.conbuildmat.2010.06.017

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