Modeling the transport of ions in unsaturated cement-based materials

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Alternative methodology to consider damage and expansions in external sulfate attack modeling (2014, unknown): “In this work, the hyperbolic function proposed by Idiart et al. [4] has been adopted, which yields comparable trends to the relationship proposed by Samson & Marchand [19] and has the advantage to explicitly depend on the initial porosity (𝜑0 ).”
Chemo-mechanical modelling of the external sulfate attack in concrete (2017, background): “In partially saturated media the latter depends on the degree of saturation and the relation between the two concentrations reads ns(x, t) = nsL(x, t)Sw(x, t)φ (56) The molar concentration nsL(x, t) can be computed taking into account the diffusion process of sulfates within the pore solution and th”
Numerical simulation of cementitious materials degradation under external sulfate attack (2010, unknown): “Samson, Marchand and associates [7,24–26] developed a numerical model for describing the mechanism of ionic transport in unsaturated cement systems.”