Computers and Concrete

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Modeling of chloride diffusion in a hydrating concrete incorporating silica fume

  • Wang, Xiao-Yong (Department of Architectural Engineering, College of Engineering, Kangwon National University) ;
  • Park, Ki-Bong (Department of Architectural Engineering, College of Engineering, Kangwon National University) ;
  • Lee, Han-Seung (School of Architecture & Architectural Engineering, Hanyang University)
  • Received : 2011.10.30
  • Accepted : 2012.05.23
  • Published : 2012.11.25
⟨ Previous Next ⟩

Abstract

Silica fume has long been used as a mineral admixture to improve the durability and produce high strength and high performance concrete. And in marine and coastal environments, penetration of chloride ions is one of the main mechanisms causing concrete reinforcement corrosion. In this paper, we proposed a numerical procedure to predict the chloride diffusion in a hydrating silica fume blended concrete. This numerical procedure includes two parts: a hydration model and a chloride diffusion model. The hydration model starts with mix proportions of silica fume blended concrete and considers Portland cement hydration and silica fume reaction respectively. By using the hydration model, the evolution of properties of silica fume blended concrete is predicted as a function of curing age and these properties are adopted as input parameters for the chloride penetration model. Furthermore, based on the modeling of physicochemical processes of diffusion of chloride ion into concrete, the chloride distribution in silica fume blended concrete is evaluated. The prediction results agree well with experiment results of chloride ion concentrations in the hydrating concrete incorporating silica fume.

Keywords

Acknowledgement

Grant : study on the carbonation prediction of concrete using Portland blast furnace slag hydrationmodel

Supported by : National Research Foundation of Korea

References

  1. Breugel, K. (1995), "Numerical simulation of hydration and microstructural development in hardening cementbased materials (I) theory", Cement Concrete Res., 25(2), 319-331. https://doi.org/10.1016/0008-8846(95)00017-8
  2. Han, S.H. (2007), "Influence of diffusion coefficient on chloride ion penetration of concrete structure", Constr. Build. Mater., 21(2), 370-378. https://doi.org/10.1016/j.conbuildmat.2005.08.011
  3. Ishida, T., Iqbal, P.O. and Anh, H.T.L. (2009), "Modeling of chloride diffusivity coupled with non-linear binding capacity in sound and cracked concrete", Cement Concrete Res., 39(10), 913-923. https://doi.org/10.1016/j.cemconres.2009.07.014
  4. Jensen, O.M. and Hansen, P.F. (2001), "Water-entrained cement based materials, I: principles and theoretical background", Cement Concrete Res., 31(4), 647-654. https://doi.org/10.1016/S0008-8846(01)00463-X
  5. Logan, D.L. (2002), A first course in the finite element method, Brooks/Cole Thomson learning, United States.
  6. Maruyama, I., Suzuki, M. and Sato, R. (2005), "Prediction of temperature in ultra high-strength concrete based on temperature dependent hydration model", Proceedings of 7th Int. Symp. on High Performance Concrete, United States.
  7. Matsushita, T., Hoshino, S., Maruyama, I., Noguchi, T. and Yamada, K. (2007), "Effect of curing temperature and water to cement ratio on hydration of cement compounds", Proceedings of 12th international congress chemistry of cement, Montreal.
  8. Mehta, P.K. (2006), Concrete-microstructure, properties and materials, 3rd ed, MaGraw-Hill, New York.
  9. Navi, P. and Pignat, C. (1996), "Simulation of cement hydration and the connectivity of the capillary pore space", Adv. Cem. Base. Mater., 4(2), 58-67. https://doi.org/10.1016/S1065-7355(96)90052-8
  10. Pane, I. and Hansen, W. (2005), "Investigation of blended cement hydration by isothermal calorimetry and thermal analysis", Cement Concrete Res., 35(6), 1155-1164. https://doi.org/10.1016/j.cemconres.2004.10.027
  11. Papadakis, V.G. (1999a), "Experimental investigation and theoretical modeling of silica fume activity in concrete", Cement Concrete Res., 29(1), 79-86. https://doi.org/10.1016/S0008-8846(98)00171-9
  12. 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. https://doi.org/10.1016/S0008-8846(99)00153-2
  13. Papadakis, V.G. (2000), "Effect of supplementary cementing materials on concrete resistance against carbonation and chloride ingress", Cement Concrete Res., 30(2), 291-299. https://doi.org/10.1016/S0008-8846(99)00249-5
  14. Papadakis, V.G., Faradis, M.N. and Vayenas, C.G. (1992), "Hydration and carbonation of pozzolanic cements", ACI Mater. J., 89(2), 119-130.
  15. Papadakis, V.G., Faradis, M.N. and Vayenas, C.G. (1996a), "Physicochemical process and mathematical modeling of concrete chlorination", Chem. Eng. Sci., 51(4), 505-513. https://doi.org/10.1016/0009-2509(95)00318-5
  16. Papadakis, V.G., Fardis, M.N. and Vayenas, C.G. (1996b), "Mathematical modeling of chloride effect on concrete durability and protection measures", Proceedings of Concrete Repair, Rehabilitation and Protection, London.
  17. Park, K.B., Noguchi, T. and Plawsky, J. (2005), "Modeling of hydration reaction using neural network to predict the average properties of cement paste", Cement Concrete Res., 35(9), 1676-1684. https://doi.org/10.1016/j.cemconres.2004.08.004
  18. Pereira, C.J. and Hegedus, L.L. (1984), "Diffusion and reaction of chloride ions in porous concrete", Proceedings of the 8th International Symposium of Chemical Reaction Engineering, Edinburgh.
  19. Saeki, T. and Monteiro, P.J.M. (2005), "A model to predict the amount of calcium hydroxide in concrete containing mineral admixture", Cement Concrete Res., 35(10), 1914-1921. https://doi.org/10.1016/j.cemconres.2004.11.018
  20. Song, H.W., Jang, J.C., Saraswathy, V. and Byun, K.J. (2007), "An estimation of the diffusivity of silica fume concrete", Build. Environ., 42(3), 1358-1367. https://doi.org/10.1016/j.buildenv.2005.11.019
  21. Tomosawa, F. (1997), "Development of a kinetic model for hydration of cement", Proceedings of tenth international congress chemistry of cement. Gothenburg.
  22. Yoon, I.S. (2009), "Simple approach to calculate chloride diffusivity of concrete considering carbonation", Comput. Concrete, 6(1), 1-18. https://doi.org/10.12989/cac.2009.6.1.001

Cited by

  1. Chloride penetration resistance of concrete containing ground fly ash, bottom ash and rice husk ash vol.13, pp.1, 2014, https://doi.org/10.12989/cac.2014.13.1.017
  2. Chloride diffusivity of concrete: probabilistic characteristics at meso-scale vol.13, pp.2, 2014, https://doi.org/10.12989/cac.2014.13.2.187
  3. Chloride diffusion in concrete associated with single, dual and multi cation types vol.17, pp.1, 2016, https://doi.org/10.12989/cac.2016.17.1.053
  4. Testing of the permeability of concrete box beam with ion transport method in service vol.15, pp.3, 2015, https://doi.org/10.12989/cac.2015.15.3.461
  5. Modelling of chloride diffusion in saturated concrete vol.15, pp.1, 2015, https://doi.org/10.12989/cac.2015.15.1.127