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dc.contributor.authorHolzer, Lorenz-
dc.contributor.authorMünch, Beat-
dc.contributor.authorRizzi, Marta-
dc.contributor.authorWepf, Roger Albert-
dc.contributor.authorMarschall, Paul-
dc.contributor.authorGraule, Thomas J.-
dc.date.accessioned2018-01-25T11:09:47Z-
dc.date.available2018-01-25T11:09:47Z-
dc.date.issued2010-02-
dc.identifier.issn0169-1317de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/2200-
dc.description.abstractIn 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).de_CH
dc.language.isoende_CH
dc.publisherElsevier BVde_CH
dc.relation.ispartofApplied Clay Sciencede_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectMapde_CH
dc.subject.ddc620.11: Werkstoffede_CH
dc.title3D-microstructure analysis of hydrated bentonite with cryo-stabilized pore waterde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitute of Computational Physics (ICP)de_CH
dc.identifier.doi10.1016/j.clay.2009.11.045de_CH
zhaw.funding.euNode_CH
zhaw.issue3-4de_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.end342de_CH
zhaw.pages.start330de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume47de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
Appears in Collections:Publikationen School of Engineering

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