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Settling and sedimentation behavior of fine-grained materials

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dc.contributor.authorNam, Soonkieen
dc.contributor.committeecochairDiplas, Panayiotisen
dc.contributor.committeecochairGutierrez, Marte S.en
dc.contributor.committeememberBrandon, Thomas L.en
dc.contributor.departmentCivil Engineeringen
dc.date.accessioned2014-03-14T21:36:14Zen
dc.date.adate2005-05-27en
dc.date.available2014-03-14T21:36:14Zen
dc.date.issued2005-05-06en
dc.date.rdate2008-05-27en
dc.date.sdate2005-05-16en
dc.description.abstractChanneling has already been an observed phenomenon that often occurs during settling and sedimentation processes of finer materials. However, it has been regarded as a minor factor affecting settling process, e.g. settling velocity or consolidation rate. In this study, settling behaviors of talcs, kaolins and attapulgite were reviewed by experiments with small and large settling columns with special focus on channel formation during sedimentation. The large settling column is equipped with twenty eight measuring points, which are connected to pressure transducers for measuring pore pressure changes during settling. Throughout the study, channel formation was observed and related to the experimental conditions affecting it. The excess pore pressure changes were measured during the large column tests. Channels occurred under flocculation in zone settling and also in consolidation zones; pressure drop was observed near channels in some cases. It was apparent that channels work as a facilitator to dissipate the excess pore water pressure. It is summarized that not only initial concentration but also the material properties, such as specific gravity and shape of particles, can affect the channel formation.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-05162005-231257en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05162005-231257/en
dc.identifier.urihttp://hdl.handle.net/10919/42677en
dc.publisherVirginia Techen
dc.relation.haspartETD.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectself-weight consolidationen
dc.subjectflocculationen
dc.subjectzone settlingen
dc.subjectchannelingen
dc.titleSettling and sedimentation behavior of fine-grained materialsen
dc.typeThesisen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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