| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | 3D-microstructure analysis of hydrated bentonite with cryo-stabilized pore water |
| Autor/-in: | Holzer, Lorenz Münch, Beat Rizzi, Marta Wepf, Roger Albert Marschall, Paul Graule, Thomas J. |
| DOI: | 10.1016/j.clay.2009.11.045 |
| Erschienen in: | Applied Clay Science |
| Band(Heft): | 47 |
| Heft: | 3-4 |
| Seite(n): | 330 |
| Seiten bis: | 342 |
| Erscheinungsdatum: | Feb-2010 |
| Verlag / Hrsg. Institution: | Elsevier |
| ISSN: | 0169-1317 |
| Sprache: | Englisch |
| Schlagwörter: | Map |
| Fachgebiet (DDC): | 620.11: Werkstoffe |
| Zusammenfassung: | In saturated bentonite, free water is hosted in the meso- and macropores. Microscopic characterization of free water and the associated pore structure is very difficult because of the swelling- and shrinking-behaviour of montmorillonite. In this article, we present state of the art cryo-preparation techniques including high pressure freezing and low temperature freeze substitution, which enable the stabilization of bentonite microstructures. Microscopic analyses of cryo-stabilized bentonite samples are then performed with conventional SEM, with cryo-SEM and with FIB-nanotomography. From the resulting 2D- and 3D-images, so-called “continuous pore size distributions” are calculated and the 3D-connectivities of the mesopores are documented. Furthermore, from the comparison with pore size analyses that are based on conventional preparation techniques (oven drying and freeze drying), it is shown that high pressure freezing leads to more reliable results. Overall, it is demonstrated that reliable quantitative 3D-characterization can be achieved from the bentonite pore structure when high resolution 3D-imaging by FIB-nanotomography is combined with modern cryo-preparation techniques (i.e. high pressure freezing). |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/2200 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | Lizenz gemäss Verlagsvertrag |
| Departement: | School of Engineering |
| Organisationseinheit: | Institute of Computational Physics (ICP) |
| Enthalten in den Sammlungen: | Publikationen School of Engineering |
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Holzer, L., Münch, B., Rizzi, M., Wepf, R. A., Marschall, P., & Graule, T. J. (2010). 3D-microstructure analysis of hydrated bentonite with cryo-stabilized pore water. Applied Clay Science, 47(3-4), 330–342. https://doi.org/10.1016/j.clay.2009.11.045
Holzer, L. et al. (2010) ‘3D-microstructure analysis of hydrated bentonite with cryo-stabilized pore water’, Applied Clay Science, 47(3-4), pp. 330–342. Available at: https://doi.org/10.1016/j.clay.2009.11.045.
L. Holzer, B. Münch, M. Rizzi, R. A. Wepf, P. Marschall, and T. J. Graule, “3D-microstructure analysis of hydrated bentonite with cryo-stabilized pore water,” Applied Clay Science, vol. 47, no. 3-4, pp. 330–342, Feb. 2010, doi: 10.1016/j.clay.2009.11.045.
HOLZER, Lorenz, Beat MÜNCH, Marta RIZZI, Roger Albert WEPF, Paul MARSCHALL und Thomas J. GRAULE, 2010. 3D-microstructure analysis of hydrated bentonite with cryo-stabilized pore water. Applied Clay Science. Februar 2010. Bd. 47, Nr. 3-4, S. 330–342. DOI 10.1016/j.clay.2009.11.045
Holzer, Lorenz, Beat Münch, Marta Rizzi, Roger Albert Wepf, Paul Marschall, and Thomas J. Graule. 2010. “3D-Microstructure Analysis of Hydrated Bentonite with Cryo-Stabilized Pore Water.” Applied Clay Science 47 (3-4): 330–42. https://doi.org/10.1016/j.clay.2009.11.045.
Holzer, Lorenz, et al. “3D-Microstructure Analysis of Hydrated Bentonite with Cryo-Stabilized Pore Water.” Applied Clay Science, vol. 47, no. 3-4, Feb. 2010, pp. 330–42, https://doi.org/10.1016/j.clay.2009.11.045.
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