International Journal of Concrete Structures and Materials

Korea Concrete Institute (한국콘크리트학회)
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Pull-out Strengths of GFRP-Concrete Bond Exposed to Applied Environmental Conditions

  • Kabir, Muhammad Ikramul (Institute for Infrastructure Engineering, Western Sydney University) ;
  • Samali, Bijan (Institute for Infrastructure Engineering, Western Sydney University) ;
  • Shrestha, Rijun (Centre for Built Infrastructure Research, University of Technology Sydney)
  • Received : 2015.12.06
  • Accepted : 2016.09.28
  • Published : 2017.03.30
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Abstract

This paper presents results of an experimental investigation on the behaviour of bond between external glass fibre reinforced polymer reinforcement and concrete exposed to three different environmental conditions, namely, temperature cycles, wet-dry cycles and outdoor environment separately for extended durations. Single shear tests (pull-out test) were conducted to investigate bond strengths (pull-out strengths) of control (unexposed) and exposed specimens. Effect of the exposure conditions on the compressive strength of concrete were also investigated separately to understand the effect of changing concrete compressive strength on the pull-out strength. Based on the comparison of experimental results of exposed specimens to control specimens in terms of bond strengths, failure modes and strain profiles, the most significant degradation of pull-out strength was observed in specimens exposed to outdoor environment, whereas temperature cycles did not cause any deterioration of strength.

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References

  1. Al-Tamimi, A. K., Hawileh, R. A., Abdalla, J. A., Rasheed, H. A., & Al-Mahaidi, R. (2014). Durability of the bond between CFRP plates and concrete exposed to harsh environments. Journal of Materials in Civil Engineering, 27, 04014252.
  2. AS 1012.17. (1997). Method of testing concrete-Determination of the static chord modulus of elasticity and Poisson's ratio of concrete specimens. Sydney, Australia: Standards Australia.
  3. AS 1012.9. (1999). Method of testing concrete-Determination of the compressive strength of concrete specimens. Sydney, Australia: Standards Australia.
  4. ASTM D3039/D3039M. (2008). Standard test method for tensile properties of polymer matrix composite materials. Pennsylvania: American Society for Testing and Materials (ASTM).
  5. Benzarti, K., Chataigner, S., Quiertant, M., Marty, C., & Aubagnac, C. (2011). Accelerated ageing behaviour of the adhesive bond between concrete specimens and CFRP overlays. Construction and Building Materials, 25, 523-538. https://doi.org/10.1016/j.conbuildmat.2010.08.003
  6. Bizindavyi, L., & Neale, K. (1999). Transfer lengths and bond strengths for composites bonded to concrete. Journal of Composites for Construction, 3, 153-160. https://doi.org/10.1061/(ASCE)1090-0268(1999)3:4(153)
  7. Chajes, M. J., Thomson, T. A., & Farschman, C. A. (1995). Durability of concrete beams externally reinforced with composite fabrics. Construction and Building Materials, 9, 141-148. https://doi.org/10.1016/0950-0618(95)00006-2
  8. Chen, J., & Teng, J. (2001). Anchorage strength models for FRP and steel plates bonded to concrete. Journal of Structural Engineering, 127, 784-791. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:7(784)
  9. Dai, J., Ueda, T., & Sato, Y. (2005). Development of the nonlinear bond stress-slip model of fiber reinforced plastics sheet-concrete interfaces with a simple method. Journal of Composites for Construction, 9, 52-62. https://doi.org/10.1061/(ASCE)1090-0268(2005)9:1(52)
  10. Dai, J. G., Yokota, H., Iwanami, M., & Kato, E. (2010). Experimental investigation of the influence of moisture on the bond behavior of FRP to concrete interfaces. Journal of Composites for Construction, 14, 834. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000142
  11. Dejke, V., & Tepfers, R. (2001). Durability and service life prediction of GFRP for concrete reinforcement. In Proceedings of 5th international conference on fiber-reinforced plastics for reinforced concrete structures (FRPRCS-5) (pp. 505-516).
  12. Grace, N. F. (2004). Concrete repair with CFRP. Concrete International, 26, 45-52.
  13. Homam, S., Sheikh, S., & Mukherjee, P. (2001). Durability of fibre reinforced polymers (FRP) wraps and external FRP-concrete bond. In Proceedings of the 3rd international conference on concrete under severe conditions, Vancouver, BC, Canada, 18-20 June 2001, (pp. 1866-1873).
  14. Imani, F. S., Chen, A., Davalos, J. F., & Ray, I. (2010). Temperature and water-immersion effect on mode II fracture behavior of CFRP-concrete interface. In CICE 2010-The 5th international conference on FRP composites in civil engineering, Beijing, China (pp. 557-561).
  15. Kabir, M. I. (2014). Short and long term performance of concrete structures repaired/strengthened with FRP. PhD thesis, Civil Engineering, University of Technology, Sydney, Australia.
  16. Kabir, M. I., Samali, B., & Shrestha, R. (2016a). Fracture properties of CFRP-concrete bond subjected to three environmental conditions. Journal of Composites for Construction. doi:10.1061/(ASCE)CC.1943-5614.0000665.
  17. Kabir, M. I., Shrestha, R., & Samali, B. (2016b). Effects of applied environmental conditions on the pull-out strengths of CFRP-concrete bond. Construction and Building Materials,. doi:10.1016/j.conbuildmat.2016.03.195.
  18. Kang, T. H.-K., Howell, J., Kim, S., & Lee, D. J. (2012). A state-of-the-art review on debonding failures of FRP laminates externally adhered to concrete. International Journal of Concrete Structures and Materials, 6, 123-134. https://doi.org/10.1007/s40069-012-0012-1
  19. Li, G., Pang, S., Helms, J., Mukai, D., Ibekwe, S., & Alaywan, W. (2002). Stiffness degradation of FRP strengthened RC beams subjected to hygrothermal and aging attacks. Journal of Composite Materials, 36, 795. https://doi.org/10.1177/0021998302036007614
  20. Litherland, K. L., Oakley, D. R., & Proctor, B. A. (1981). The use of accelerated ageing procedures to predict the long term strength of GRC composites. Cement and Concrete Research, 11, 455-466. https://doi.org/10.1016/0008-8846(81)90117-4
  21. Lu, X. Z., Teng, J. G., Ye, L. P., & Jiang, J. J. (2005). Bond-slip models for FRP sheets/plates bonded to concrete. Engineering Structures, 27, 920-937. https://doi.org/10.1016/j.engstruct.2005.01.014
  22. Mazzotti, C., Savoia, M., & Ferracuti, B. (2008). An experimental study on delamination of FRP plates bonded to concrete. Construction and Building Materials, 22, 1409-1421. https://doi.org/10.1016/j.conbuildmat.2007.04.009
  23. Mazzotti, C., Savoia, M., & Ferracuti, B. (2009). A new singleshear set-up for stable debonding of FRP-concrete joints. Construction and Building Materials, 23, 1529-1537. https://doi.org/10.1016/j.conbuildmat.2008.04.003
  24. Myers, J., Murthy, S., & Micelli, F. (2001). Effect of combined environmental cycles on the bond of FRP sheets to concrete. In Proceedings of the international conference on composites in construction (CCC-2001) Porto, Portugal, October 10-12, (pp. 55-59).
  25. Nishizaki, I., & Kato, Y. (2011). Durability of the adhesive bond between continuous fibre sheet reinforcements and concrete in an outdoor environment. Construction and Building Materials, 25, 515-522. https://doi.org/10.1016/j.conbuildmat.2010.04.067
  26. Ouezdou, M. B., Belarbi, A., & Bae, S.-W. (2009). Effective bond length of FRP sheets externally bonded to concrete. International Journal of Concrete Structures and Materials, 3, 127-131. https://doi.org/10.4334/IJCSM.2009.3.2.127
  27. Phani, K. K., & Bose, N. R. (1987). Temperature dependence of hydrothermal ageing of CSM-laminate during water immersion. Composites Science and Technology, 29, 79-87. https://doi.org/10.1016/0266-3538(87)90050-9
  28. Robert, M., Wang, P., Cousin, P., & Benmokrane, B. (2010). Temperature as an accelerating factor for long-term durability testing of FRPs: Should there be any limitations? Journal of Composites for Construction, 14, 361. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000102
  29. Shrestha, J., Ueda, T., & Zhang, D. (2014). Durability of FRP concrete bonds and its constituent properties under the influence of moisture conditions. Journal of Materials in Civil Engineering, 27, A4014009.
  30. Teng, J. G., Chen, J. F., Smith, S. T., & Lam, L. (2002). FRP: Strengthened RC structures. Hoboken, NJ: Wiley.
  31. Toutanji, H. A., & Gomez, W. (1997). Durability characteristics of concrete beams externally bonded with FRP composite sheets. Cement & Concrete Composites, 19, 351-358. https://doi.org/10.1016/S0958-9465(97)00028-0
  32. Tuakta, C., & Buyukozturk, O. (2011). Deterioration of FRP/concrete bond system under variable moisture conditions quantified by fracture mechanics. Composites Part B Engineering, 42, 145-154. https://doi.org/10.1016/j.compositesb.2010.11.002
  33. Yuan, H., Teng, J. G., Seracino, R., Wu, Z. S., & Yao, J. (2004). Full-range behavior of FRP-to-concrete bonded joints. Engineering Structures, 26, 553-565. https://doi.org/10.1016/j.engstruct.2003.11.006
  34. Yun, Y., & Wu, Y.-F. (2011). Durability of CFRP-concrete joints under freeze-thaw cycling. Cold Regions Science and Technology, 65, 401-412. https://doi.org/10.1016/j.coldregions.2010.11.008

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