Abstract
Chloride transportation was divided into stationary and flowing solution states to investigate the mechanics of chloride transportation in cracked concrete under saturated condition.The behaviors of time-dependent surface chloride concentration and chloride diffusion coefficient in concrete were analyzed by dual porous medium model,and the behavior of linear bonding between concrete and chloride was analyzed by two-dimensional diffusion model,respectively.The governing equations of chloride ions diffusing into concrete and cracked concrete were described by the Fick's 2nd law considering the effect of crack self-healing.Comparisons between the experimental and the numerical results showed the effectiveness of the proposed models.Dual porous medium model and two-dimensional diffusion model are both applicable for the short term ingression of chloride,and the two-dimensional diffusion model is more appropriate to the long term simulation.
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