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Advances in Concrete Construction
  Volume 1, Number 3, October 2013 , pages 201-213
DOI: https://doi.org/10.12989/acc2013.1.3.201
 

Service life prediction of a reinforced concrete bridge exposed to chloride induced deterioration
Vagelis G. Papadakis

 
Abstract
    While recognizing the problem of reinforcement corrosion and premature structural deterioration of reinforced concrete (RC) structures as a combined effect of mechanical and environmental actions (carbonation, ingress of chlorides), emphasis is given on the effect of the latter, as most severe and unpredictable action. In this study, a simulation tool, based on proven predictive models utilizing principles of chemical and material engineering, for the estimation of concrete service life is applied on an existing reinforced concrete bridge (resund Link) located in a chloride environment. After a brief introduction to the structure of the models used, emphasis is given on the physicochemical processes in concrete leading to chloride induced corrosion of the embedded reinforcement. By taking under consideration the concrete, structural and environmental properties of the bridge investigated, an accurate prediction of its service life is taking place. It was observed that the proposed, and already used, relationship of service lifetime- cover is almost identical with a mean line between the lines derived from the minimum and maximum critical values considered for corrosion initiation. Thus, an excellent agreement with the project specifications is observed despite the different ways used to approach the problem. Furthermore, different scenarios of concrete cover failure, in the case when a coating is utilized, and extreme deicing salts attack are also investigated.
 
Key Words
    bridge; chloride attack; concrete; durability; failure scenarios; protective measures; service life
 
Address
Vagelis G. Papadakis: Department of Environmental and Natural Resources Management, University of Patras, Seferi 2, GR-30100, Agrinio, Greece
 
References
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  1. Beaudoin, J.J., Ramachandran, V.S. and Feldman, R.F. (1990), "Interaction of chloride and C-S-H", Cement Concrete Res., 20(6), 875-883.
  2. Bræstrup, M.W. and Ennemark, F. (1998), "The Øresund Link: 100-year service life", Concr. Intern., 20(10), 62-64.
  3. Diamond, S. (1986), "Chloride concentrations in concrete pore solutions resulting from calcium and sodium chloride admixtures", Cem. Concr. Aggr., 8(2), 97-102.
  4. Falbe-Hansen, K. and Munch-Petersen, C. (1998), "Concrete for the Øresund Bridge", Concrete, 9(5-6), 29-31.
  5. Glasser, F.P., Marchand, J. and Samson, E. (2008), "Durability of concrete- Degradation phenomena involving detrimental chemical reactions", Cement Concrete Res., 38(2), 226-246.
  6. Goñi, S. and Andrade, C. (1990), "Synthetic concrete pore solution chemistry and rebar corrosion rate in the presence of chlorides", Cement Concrete Res., 20(4), 525-539.
  7. Hussain, S.E., Rasheeduzzafar, Al-Musallam, A., Al-Gahtani, A.S. and, Al-Gahtani, A.S. (1995), "Factors affecting threshold chloride for reinforcement corrosion in concrete", Cement Concrete Res., 25(7), 1543-1555.
  8. Mehta, P.K. and Monteiro, P.J.M. (2006), Concrete: Microstructure, Properties, and Materials, 3rd Ed. McGraw- Hill, NY.
  9. Munch-Petersen, C. (1998), "Danish concrete technology in action", Concrete, 32(7), 13-14.
  10. Øresund Konsiortiet (1995), Chloride Penetration in Concrete, The Øresund Link- Technical Note.
  11. Papadakis, V.G., Fardis, M.N. and Vayenas, C.G. (1996), "Physicochemical processes and mathematical modelling of concrete chlorination", Chem. Eng. Sci., 51(4), 505-513.
  12. Papadakis, V.G. (1999a), "Experimental investigation and theoretical modeling of silica fume activity in concrete", Cement Concrete Res., 29(1), 79-86.
  13. Papadakis, V.G. (1999b), "Effect of fly ash on Portland cement systems. Part I: Low-calcium fly ash" Cement Concrete Res., 29(11), 1727-1736.
  14. Papadakis, V.G., Pedersen, E.J. and Lindgreen, H. (1999), "An AFM-SEM investigation of the effect of silica fume and fly ash on cement paste microstructure", J. Mater. Sie., 34(4), 683-690.
  15. Papadakis, V.G. (2000), "Effect of supplementary cementing materials on concrete resistance against carbonation and chloride ingress", Cement Concrete Res., 30(2), 291-299.
  16. Papadakis, V.G., Efstathiou, M.P. and Apostolopoulos, C.A. (2007), "Computer-aided approach of parameters influencing concrete service life and field validation", Comput. Concr., 4(1), 1-18.
  17. Pereira, C.J. and Hegedus, L.L. (1984), "Diffusion and reaction of chloride ions in porous concrete", Proceedings of 8th International Symposium of Chemical Reaction Engineering, Edinburgh, UK.
  18. Roy, D.M., Jiang, W. and Silsbee, M.R. (2000), "Chloride diffusion in ordinary, blended, and alkali-activated cement pastes and its relation to other properties", Cement Concrete Res., 30(12), 1879-1884.
  19. Sandberg, P. (1998), Chloride Initiated Reinforcement Corrosion in Marine Concrete, Report TVBM-1015, Lund Inst. of Tech., Div. Build. Mater., Lund, Sweden.
  20. Sellevold, E.J. and Nilsen, T. (1987), "Condensed silica fume in concrete: A world review", in Supplementary Cementing Materials for Concrete, Ed. V.M. Malhotra, CANMET SP-86-8E, 165-243, Ottawa, Canada.
  21. Shi, X., Xie, N., Fortune, K. and Gong, J. (2012), "Durability of steel reinforced concrete in chloride environments: An overview", Constr. Build. Mater., 30, 125-138.
  22. Suryavanshi, A.K., Scantlebury, J.D. and Lyon, S.B. (1996), "Mechanism of Friedel's salt formation in cements rich in tri-calcium aluminate", Cement Concrete Res., 26(5), 717-727.
  23. Tang, L., Nilsson, L.-O. and Basheer, P.A.M. (2012), Resistance of Concrete to Chloride Ingress: Testing and Modelling, Spon Press, NY.
  24. Xu, J., Jiang, L., Wang, W. and Jiang, Y. (2011), "Influence of CaCl2 and NaCl from different sources on chloride threshold value for the corrosion of steel reinforcement in concrete", Constr. Build. Mater., 25(2), 663-669.
  25. Yong Ann, K. and Song H.W. (2007), "Chloride threshold level for corrosion of steel in concrete", Corrosion Science, 49(11), 4113-4133.
  26. Zhang, T. and Gjørv, O.E. (1996), "Diffusion behavior of chloride ions in concrete", Cement Concrete Res., 26(6), 907-917.
 
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