Summary
The main regularities of structure formation in clay sediments are examined proceeding from the present-day views on the stabilization and coagulation of dispersed systems. The effect of the mineral composition of clay particles, the composition of exchange cations, the concentration of salts in solution, and the pH of the medium on the microfabric of laboratory produced clay mineral sediments has been verified experimentally. Investigations were carried out using a scanning electron microscope and a special technique for forming and dehydrating the sediments. The data obtained indicate that there exists a strong dependence of the microstructure of sediments on the energy state of the particles, their specific hydrophility and morphological features, as well as on the environmental conditions.
Résumé
Les règles de la formation de la structure dans les sédiments argileux sont examinées à la lumière des connaissances actuelles sur la stabilisation et la coagulation des systèmes dispersés. On a vérifié expérimentalement l’effet de la composition minéralogique des particules argileuses, de la composition des cations échangeables, de la concentration des sels dans la solution et du pH du milieu sur la microstructure de sédiments argileux produits au laboratoire. Les recherches furent effectuées à l’aide du microscope électronique à balayage et au moyen d’une méthode spéciale de formation et de déshydratation des sédiments. Les données obtenues confirment que la microstructure des sédiments formés dépend étroitement de l’état énergétique des particules argileuses, de leur hydrophilité spécifique et de leurs particularités morphologiques, ainsi que des conditions d’environnement.
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Osipov, V.I., Sokolov, V.N. Structure formation in clay sediments. Bulletin of the International Association of Engineering Geology 18, 83–90 (1978). https://doi.org/10.1007/BF02635352
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DOI: https://doi.org/10.1007/BF02635352