Computers and Concrete

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Effect of measurement method and cracking on chloride transport in concrete

  • Zhang, Shiping (Department of Civil Engineering and Architecture, Nanjing Institute of Technology) ;
  • Dong, Xiang (Department of Civil Engineering and Architecture, Nanjing Institute of Technology) ;
  • Jiang, Jinyang (College of Materials Science and Engineering, Southeast University)
  • Received : 2012.04.12
  • Accepted : 2012.09.20
  • Published : 2013.04.25
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Abstract

This paper aims to study the effect of measurement methods and cracking on chloride transport of concrete materials. Three kinds of measurement methods were carried out, including immersion test, rapid migration test and steady-state migration test. All of these measurements of chloride transport show that chloride ion diffusion coefficient decreased with the reduction of water to cement ratio. Results of the immersion test were less than that of rapid migration test and steady-state migration test. For the specimen of lower water to cement ratio, the external electrical field has little effect on chloride binding relatively. Compared with the results obtained by these different measurement methods, the lower water to cement ratio may cause smaller differences among these different methods. The external voltage can reduce chloride binding of concrete, and the higher electrical field made a strong impact on the chloride binding. Considering the effect of high voltage on the specimen, results indicate that results based on the steady-state migration test should be more reasonable. For cracked concrete, cracking can accelerate the chloride ion diffusion.

Keywords

References

  1. Ann, K.Y., Ahn, J.H. and Ryou, J.S. (2009), "The importance of chloride content at the concrete surface in assessing the time to corrosion of steel in concrete structures", Constr. Build. Mater., 23(1), 239-245. https://doi.org/10.1016/j.conbuildmat.2007.12.014
  2. Bentz, D.P., Garboczi, E.J. and Lagergren, E.S. (1998), "Multi-scale microstructural modeling of concrete diffusivity: identification of significant variables", Cement Concrete Aggr., 20(1), 129-139.
  3. Berke, N.S. and Hicks, M.C. (1994), "Predicting chloride profiles in concrete", Corros. Eng., 50(3), 234-239. https://doi.org/10.5006/1.3293515
  4. Berman, H.A. (1972), "Determination of chloride in hardened Portland cement, paste and concrete", J. Mater., 7, 330-335.
  5. Castro, P. and Moreno, E.I. (2000), "Genesca J. Influence of marine micro-climates on carbonation of reinforced concrete buildings", Cement Concrete Res., 30, 1565-1571. https://doi.org/10.1016/S0008-8846(00)00344-6
  6. Chindaprasirt, P., Rukzon, S. and Sirivivatnanon, V. (2008), "Effect of carbon dioxide on chloride penetration and chloride ion diffusion coefficient of blended Portland cement mortar", Constr. Build. Mater., 22(8), 1701-1707. https://doi.org/10.1016/j.conbuildmat.2007.06.002
  7. Conciatori, D., Laferrière, F. and Brühwiler, E. (2010), "Comprehensive modeling of chloride ion and water ingress into concrete considering thermal and carbonation state for real climate", Cement Concrete Res., 40(1), 109-111. https://doi.org/10.1016/j.cemconres.2009.08.007
  8. Crank, J. (1975), The mathematics of diffusion, Oxford Press, London.
  9. David, C., Francine, L. and Eugen, B. (2010), "Comprehensive modeling of chloride ion and water ingress into concrete considering thermal and carbonation state for real climate", Cement Concrete Res., 40(1), 109-118. https://doi.org/10.1016/j.cemconres.2009.08.007
  10. Gowripalana, N., Sirivivatnanonb, V. and Lim, C.C. (2000), "Chloride diffusivity of concrete cracked in flexure", Cement Concrete Res., 30(5), 725-730. https://doi.org/10.1016/S0008-8846(00)00216-7
  11. Halamickova, P., Detwiler, R.J., Bentz, D.P. and Garboczi, E.J. (1995), "Water permeability and chloride ion diffusion in Portland cement mortars: relationship to sand content and critical pore diameter", Cement Concrete Res., 25(4), 790-802. https://doi.org/10.1016/0008-8846(95)00069-O
  12. Hussain, R.R. and Ishida, T. (2011), "Enhanced electro-chemical corrosion model for reinforced concrete under severe coupled action of chloride and temperature", Constr. Build. Mater., 25(3), 1551-1561.
  13. Ihekwaba, N.M., Hope, B.B. and Hanaaon, C.M. (1996), "Carbonation and electrochemical chloride extraction from concrete", Cement Concrete Res., 26(7), 1095-1107. https://doi.org/10.1016/0008-8846(96)00076-2
  14. Li, L.Y., Xia, J. and Lin, S.S. (2012), "A multi-phase model for predicting the effective diffusion coefficient of chlorides in concrete", Constr. Build. Mater., 26(1), 295-301. https://doi.org/10.1016/j.conbuildmat.2011.06.024
  15. Mangat, P.S. and Molloy, B.T. (1994), "Prediction of free chloride concentration in concrete using routine inspection data", Mag. Concrete Res., 46(169), 279-287. https://doi.org/10.1680/macr.1994.46.169.279
  16. Misra, S., Yamamoto, A. and Tsutsumi, T. (1994), "Application of rapid chloride permeability test to qualify control of concrete", Proceedings of 3rd international conference on concrete durability, France.
  17. Onyejekwe, O.O. and Reddy, N. (2000), "A numerical approach to the study chloride ion penetration into concrete", Mag. Concrete Res., 52(4), 243-250. https://doi.org/10.1680/macr.2000.52.4.243
  18. Peter, A.C. and Esmaiel, G. (2009), "Transport processes for harmful species through concrete barriers made with mineral wastes", Constr. Build. Mater., 23(5), 1837-1846. https://doi.org/10.1016/j.conbuildmat.2008.09.022
  19. Shi, X., Liu, Y., Yang, Z. and Berry, M. (2010), "Validating the durability of corrosion resistant mineral admixture concrete", Corrosion & Sustainable Infrastructure Laboratory, Western Transportation Institute, Montana State University, Bozeman.
  20. Tang, L. (1996), "Chloride transport in concrete-measurement and prediction", Doctoral thesis, Chalmers Universities of Technology, Sweden.
  21. Tang, L. (1996), "Electrical accelerated methods for determining chloride diffusivity in concrete: current development", Mag. Concrete Res., 48(176), 173-179. https://doi.org/10.1680/macr.1996.48.176.173
  22. Tang, L. and Nilsson, L.O. (1993), "Chloride binding capacity and binding isotherms of OPC pastes and mortars", Cement Concrete Res., 23(2), 347-353. https://doi.org/10.1016/0008-8846(93)90100-N
  23. Tatsuhiko, S., Kenji, S. and Kenta, S. (2006), "Estimation of chloride diffusion coefficient of concrete using mineral admixtures", J. Adv. Concrete Tech., 4(3), 385-394. https://doi.org/10.3151/jact.4.385
  24. Tritthart, J. (1989), "Chloride binding in cement:II.The influence of the hydroxide concentration in the pore solution of hardened cement paste on the chloride binding", Cement Concrete Res., 19(5), 683-691. https://doi.org/10.1016/0008-8846(89)90039-2
  25. Wang, L. and Ueda, T. (2011), "Mesoscale simulation of chloride diffusion in concrete considering the binding capacity and concentration dependence", Comput. Concrete, 8(2), 125-142. https://doi.org/10.12989/cac.2011.8.2.125
  26. Wang, Y., Li, L. and Page, C.L. (2005), "Modelling of chloride ingress into concrete from a saline environment", Build. Environ., 40(12), 1573-1582. https://doi.org/10.1016/j.buildenv.2005.02.001
  27. Win, P.P., Watanabe, M. and Machida, A. (2004), "Penetration profile of chloride ion in cracked reinforced concrete", Cement Concrete Res., 34(7), 1073-1079. https://doi.org/10.1016/j.cemconres.2003.11.020
  28. Yang, C.C. and Cho, S.W. (2003), "An electrochemical method for accelerated chloride migration test of diffusion coefficient in cement-based materials", Mater. Chem. Phys., 81(1), 116-125. https://doi.org/10.1016/S0254-0584(03)00159-7
  29. Yang, C.C., Cho, S.W., Chi, J.M. and Huang, R. (2003), "An electrochemical method for accelerated chloride migration test in cement-based materials", Mater. Chem. Phys., 77(2), 461-469. https://doi.org/10.1016/S0254-0584(02)00102-5
  30. Zibara, H., Hooton, R.D., Thomas, M.D.A. and Stanish, K. (2008), "Influence of the C/S and C/A ratios of hydration products on the chloride ion binding capacity of lime-SF and lime-MK mixtures", Cement Concrete Res., 38(3), 422-426. https://doi.org/10.1016/j.cemconres.2007.08.024

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