Bentonite dispersions: Transition from liquid-like to solid-like behavior and cracking
DC Field | Value | Language |
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dc.contributor.author | Pelot, D. D. | - |
dc.contributor.author | Jun, S. | - |
dc.contributor.author | Yarin, A. L. | - |
dc.date.accessioned | 2021-09-04T16:25:49Z | - |
dc.date.available | 2021-09-04T16:25:49Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2015-05 | - |
dc.identifier.issn | 0377-0257 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/93674 | - |
dc.description.abstract | Cylindrical samples of 11-13 wt% aqueous bentonite dispersions with a range of resting times after preparation (0-72 h) were subject to axial squeezing and revealed a transition from a Bingham liquid-like behavior to solid-like behavior. The liquid-like behavior is characterized by viscous spreading arrested by the yield stress, whereas the solid-like behavior is characterized by stasis at lower loads followed by discontinuity of the displacement and cracking above some critical level of load. A mechanical response, dependent on resting time, implied irreversible aging as a result of slow swelling of the clay crystallites, i.e. the internal structure being built over time in the material at rest. Dispersions of 11 wt% and 12 wt% transitioned from liquid-like to solid-like behavior in a single experiment at a resting time of 24 h and 3 h, respectively. At higher concentrations (18-22 wt%) the material always behaves as a solid. The solid-like behavior is distinguished from the liquid-like behavior by the appearance of cracks. The additional bending and buckling experiments conducted with dispersions of 18-22 wt% revealed Young's moduli of 330-500 kPa, yield stresses of 9-15 kPa, cracking stresses of 15-25 kPa, and cracking strains of 8-10%. For all concentrations explored, a linear dependence of the yield stress on concentration was found. It is demonstrated for the first time using uniaxial compression that liquid bentonite dispersions at a concentration of 11-12 wt% reveal transition to a solid in a single experiment where they become capable of developing surfaces of discontinuity of the displacement. (C) 2015 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.subject | YIELD-STRESS | - |
dc.subject | CLAYS | - |
dc.title | Bentonite dispersions: Transition from liquid-like to solid-like behavior and cracking | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yarin, A. L. | - |
dc.identifier.doi | 10.1016/j.jnnfm.2015.03.001 | - |
dc.identifier.scopusid | 2-s2.0-84961291566 | - |
dc.identifier.wosid | 000353739500004 | - |
dc.identifier.bibliographicCitation | JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, v.219, pp.50 - 64 | - |
dc.relation.isPartOf | JOURNAL OF NON-NEWTONIAN FLUID MECHANICS | - |
dc.citation.title | JOURNAL OF NON-NEWTONIAN FLUID MECHANICS | - |
dc.citation.volume | 219 | - |
dc.citation.startPage | 50 | - |
dc.citation.endPage | 64 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Mechanics | - |
dc.relation.journalWebOfScienceCategory | Mechanics | - |
dc.subject.keywordPlus | YIELD-STRESS | - |
dc.subject.keywordPlus | CLAYS | - |
dc.subject.keywordAuthor | Bentonite | - |
dc.subject.keywordAuthor | Cracking | - |
dc.subject.keywordAuthor | Yield stress | - |
dc.subject.keywordAuthor | Bending | - |
dc.subject.keywordAuthor | Buckling | - |
dc.subject.keywordAuthor | Compression | - |
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