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Ran, Bo (author), Omikrine Metalssi, Othman (author), Fen-Chong, Teddy (author), Dangla, Patrick (author), Li, Kefei (author)Three models are proposed for the sulfate diffusivity change due to the pore clogging by crystallization from the chemical sulfate attack of cement-based materials. The averaging model takes a linear relationship between the crystallization quantity and diffusivity change while the constriction model takes an inverse linear form and the self...conference paper 2021