Abstract
This work reports a characterization of the possible effects that might affect the hydration properties of Mg-exchanged low-charge montmorillonite (SWy-2-Mg) when undergoes an external environmental solicitation. The latter was created by an alteration of relative humidity rates (i.e. RH%) over two hydration-dehydration cycles with different sequence. The study was mainly based on the X-ray diffraction profile modeling approach. Obtained results show strong hydration dependence as a function of the RH sequence. The interlayer configuration presents a heterogeneous hydration behavior which was systematically observed at different stages of both cycles. The interlayer water uptake process presents similar hysteresis characterized by fluctuations of interlayer water molecule abundances.
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Ammar, M., Oueslati, W., Ben Haj Amara, A. (2019). Mg-Exchanged Montmorillonite Undergoing External Environmental Solicitation: Crystalline Swelling Process Investigation. In: Doronzo, D., Schingaro, E., Armstrong-Altrin, J., Zoheir, B. (eds) Petrogenesis and Exploration of the Earth’s Interior. CAJG 2018. Advances in Science, Technology & Innovation. Springer, Cham. https://doi.org/10.1007/978-3-030-01575-6_44
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DOI: https://doi.org/10.1007/978-3-030-01575-6_44
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