Abstract
A self-made pressure control device was developed to study the migration characteristics of chloride in concrete under pressure. The effects of water pressure, pressurized time, strength grade, water-binder ratio, chloride diffusion coefficient, saturation degree and solution concentration on chloride migration are determined. Considering with pressure, the theoretical model of velocity varies with time and position is established. The formula of water permeation depth is obtained. On this basis, the chloride migration model under the coupling of pressure permeation and diffusion is established, and compared with the chloride concentration obtained from the experiment.
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