Computers and Concrete

  • 제2권1호
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  • Pages.1-18
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  • 2005
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Relation between total degradation of steel concrete bond and degree of corrosion of RC beams experimental and computational studies

  • 투고 : 2004.03.16
  • 심사 : 2005.01.30
  • 발행 : 2005.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a study on the effects of localized steel-concrete bond degradation on the flexural behaviour of RC beams. A finite element analysis is undertaken to complete the experimental analysis. The first part deals with an experimental study on beams where bond was removed by using plastic tube at different locations and for various lengths. The flexural behaviour was studied at global scale (load-deflection) and local scale (moment-curvature). The second part, a numerical study using a simplified special finite element (rust element) modelling the rust layer occurring between reinforcement and concrete with corrosion was conducted in order to find the relation between the degree of corrosion and the degradation of the steel-concrete bond. The computed value of the corrosion degree corresponding to the total degradation of bond has been used in a second time to model the tests, in order to evaluate the influence of the loss of bond, the steel cross section reduction, and the combination of both. The results enable to evaluate the influence of the different corrosion effects on the flexural behaviour, according to the length and the location of the corroded zone.

키워드

참고문헌

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  6. Dekoster, M., Buyle-Bodin, F., Maurel, O. and Delmas, Y. (2003), "Modelling of the flexural behaviour of RC beams subjected to localised and uniform corrosion", Eng. Struct., 25(10), 1333-1341. https://doi.org/10.1016/S0141-0296(03)00108-1
  7. Dekoster, M. and Buyle-Bodin, F. (2003), "Structural assessment of RC elements subjected to localised or general corrosion", Proceedings of 2nd Int. Workshop on Life Prediction and Aging Management of Concrete Structures, Paris, May, 115-26.
  8. Lee, H. S., Tomosawa, F. and Noguchi, T. (1998), "Fundamental study on evaluation of structural performance of reinforced concrete beam damaged by corrosion of longitudinal tensile main rebar by finite element method", J. Struct. Constr. Eng., 506, 43-50.
  9. Molina, F. J., Alonso, C. and Andrade, C. (1993), "Cover cracking as a function of rebar corrosion: Part 2 Numerical model", Mater. Struct., 26(163), 532-548. https://doi.org/10.1007/BF02472864
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피인용 문헌

  1. IBEM analyses on half-cell potential measurement for NDE of rebar corrosion vol.4, pp.4, 2007, https://doi.org/10.12989/cac.2007.4.4.285
  2. Finite element investigation of the structural response of corroded RC beams vol.32, pp.9, 2010, https://doi.org/10.1016/j.engstruct.2010.05.017
  3. Analysis on IBEM for consideration on reinforced concrete slab resistance vol.5, pp.6, 2008, https://doi.org/10.12989/cac.2008.5.6.545
  4. Bond strength prediction of spliced GFRP bars in concrete beams using soft computing methods vol.27, pp.4, 2005, https://doi.org/10.12989/cac.2021.27.4.305
  5. Investigation of the effects of corrosion on bond strength of steel in concrete using neural network vol.28, pp.1, 2021, https://doi.org/10.12989/cac.2021.28.1.077