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- W4327934449 abstract "Accurate prediction of chloride diffusivity in non-saturated cement paste is crucial for durability design of concrete. This paper presents an integrated framework for modelling chloride diffusivity in non-saturated cement paste considering 3D microstructure, water-gas distribution in pore network and electrical double layer effect. Results indicate that the chloride diffusivity in C-S-H pore solution is dominantly influenced by surface electric potential regardless of water saturation level, porosity of C-S-H and chloride concentration of bulk solution. With the decrease of water saturation level, the relative chloride diffusivity in cement paste experiences sharp, slow and slight decrease stages, followed by a non-diffusive stage, corresponding to connected capillary water, combination of capillary water and saturated C-S-H network and non-saturated C-S-H network as the main diffusion channel, and pore depercolation. The relative chloride diffusivity in cement paste at a given water content decreases with increasing water-to-cement ratio. The simulation results show good agreement with experimental data." @default.
- W4327934449 created "2023-03-21" @default.
- W4327934449 creator A5034046996 @default.
- W4327934449 creator A5042026897 @default.
- W4327934449 date "2023-06-01" @default.
- W4327934449 modified "2023-10-14" @default.
- W4327934449 title "Microstructure-based modelling of chloride diffusivity in non-saturated cement paste accounting for capillary and gel pores" @default.
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- W4327934449 doi "https://doi.org/10.1016/j.cemconres.2023.107153" @default.
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