Computers and Concrete

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Numerical approach to fracture behavior of CFRP/concrete bonded interfaces

  • Lin, Hai X. (College of Civil Engineering, Henan Polytechnic University) ;
  • Lu, Jian Y. (College of Civil Engineering, Henan Polytechnic University) ;
  • Xu, Bing (College of Civil Engineering, Henan Polytechnic University)
  • Received : 2016.03.17
  • Accepted : 2017.04.27
  • Published : 2017.09.25
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Abstract

Tests on the fracture behavior of CFRP-concrete composite bonded interfaces have been extensively carried out. In this study, a progressive damage model is employed to simulate the fracture behaviors. The crack nucleation, propagation and more other details can be captured by these models. The numerical results indicate the fracture patterns seem to depend on the relative magnitudes of the interface cohesive strength and concrete tensile strength. The fracture pattern transits from the predominated adhesive-concrete interface debonding to the dominated concrete cohesive cracking as the interface cohesive strength changes from lower than concrete tensile strength to higher than that. The numerical results have an agreement with the experimental results.

Keywords

References

  1. Chang, X., Luo, X.L., Zhu, C.X. and Tang, C.A. (2014), "Analysis of circular concrete-filled steel tube support in high ground stress conditions", Tunn. Undergr. Sp. Technol., 41-48.
  2. Chang, X. Shan, Y.F., Zhang, Z.H., Tang, C.A. and Ru, Z.L. (2015b), "Behavior of propagating fracture at bedding interface in layered rocks", Eng. Geo., 41, 33-41.
  3. Chang, X., Wang, J.H., Zhang, Z.H. and Tang, C.A. (2015a), "Effects of interface behavior on fracture spacing in layered rock", Rock Mech. Rock Eng., 49(5), 1733-1746.
  4. Hao, Q., Wang, Y., He, Z. and Ou, J. (2009), "Bond strength of glass fiber reinforced polymer ribbed rebars in normal strength concrete", Constr. Build. Mater., 23(2), 865-871. https://doi.org/10.1016/j.conbuildmat.2008.04.011
  5. Kim, G.B. and Pilakoutas, K.P. (2009), "Waldron. Finite element analysis of thin GFRC panels reinforced with FRP", Constr. Build. Mater., 23(2), 930-942 https://doi.org/10.1016/j.conbuildmat.2008.04.014
  6. Lee, D.H., Han, S.J., Kim, K.S. and LaFave, J.M. (2017), "Shear strength of reinforced concrete beams strengthened in shear using externally-bonded FRP composites", Compos. Struct., 173, 177-187. https://doi.org/10.1016/j.compstruct.2017.04.025
  7. Li, L., Guo, Y. and Liu, F. (2008), "Test analysis for FRC beams strengthened with externally bonded FRP sheets", Constr. Build. Mater., 22(3), 315-323. https://doi.org/10.1016/j.conbuildmat.2006.08.016
  8. Oded, R. (2008), "Debonding analysis of fiber-reinforced-polymer strengthened beams: Cohesivezone modeling versus a linear elastic fracture mechanics approach", Eng. Fract. Mech., 75(10), 2842-2859. https://doi.org/10.1016/j.engfracmech.2008.01.003
  9. Palmer, G.B. and Baker, G. (1991), "Fracture toughness and size effect in low-cement refractories", Fract. Proc. Concrete Rock Ceram., 1, 387-396.
  10. Qian, C. and Stroeven, P. (2000), "Fracture properties of concrete reinforced with steel-polypropylene hybrid fibres", Cement Concrete Compos., 22(5), 343-351. https://doi.org/10.1016/S0958-9465(00)00033-0
  11. Qiao, P. and Chen, Z.Y. (2008), "Cohesive fracture simulation and failure modes of FRP-concrete bonded interfaces", Theor. Appl. Fract. Mech., 49(2), 213-225. https://doi.org/10.1016/j.tafmec.2007.11.005
  12. Qiao, P. and Xu, Y.W. (2004), "Evaluation of fracture energy of composite bonded interfaces usingthree-point bend tests", J. Compos. Constr., 8(4), 352-359. https://doi.org/10.1061/(ASCE)1090-0268(2004)8:4(352)
  13. Taljsten, B. (1996), "Strengthening of concrete prism using the plate-bonding technique", J. Fract., 82(3), 253-266. https://doi.org/10.1007/BF00013161
  14. Tang, C.A., Liang, Z.Z., Zhang, Y.B. and Chang, X. (2008), "Fracture spacing in layered materials: A new explanation based on two-dimensional failure process modeling", Am. J. Sci., 308(1), 49-72. https://doi.org/10.2475/01.2008.02
  15. Yehia, N.A.B. (2009), "Fracture mechanics approach for flexural strengthening of reinforced concrete beams", Eng. Str., 31(2), 404-416. https://doi.org/10.1016/j.engstruct.2008.08.019