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Theory of Ionic Diffusion in Water-saturated Porous Solid with Surface Charge
2022
Journal of advanced concrete technology
The theory of ionic diffusion in water-saturated porous solids with surface electric charges has been constructed by using the general theory of diffusion, Gauss's law, and the condition of electrical neutrality. The theory derives the diffusion rate of ions not from the gradient of the ionic concentration but from the gradient of the chemical potential of ions. The chemical potential is obtained by rigorously solving the Poisson-Boltzmann equation that is derived by connecting the general
doi:10.3151/jact.20.430
fatcat:v2ay2ozv2nanfgtzw4tww7lewe