The effect of relative density on the response of sand to internal fluidization.
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| Title: | The effect of relative density on the response of sand to internal fluidization. |
|---|---|
| Authors: | Akrami, Sepideh1 (AUTHOR) Sepideh.akrami@ugent.be, Bezuijen, Adam1,2 (AUTHOR), Tehrani, Faraz S.2,3 (AUTHOR), Terwindt, Jarno2 (AUTHOR) |
| Source: | Acta Geotechnica. Jan2023, Vol. 18 Issue 1, p319-333. 15p. |
| Subjects: | Specific gravity, Fluidization, Digital image correlation, Soil mechanics, Soil particles, Sand, Image analysis |
| Abstract: | Fluidization, in the geotechnical engineering context, is a failure mechanism that can occur during piping, leakage in distribution pipes or leakage through the sheet pile walls and can lead to severe consequences. This phenomenon will occur when the sand bed is subjected to an upward-facing flow. In this case, with sufficient hydraulic gradient, the effective stresses and the contact forces between soil particles will be zero, resulting in mobilization and fluidization of the soil. This paper presents small-scale laboratory tests involving two sands and relative densities (RD). The hydraulic behavior of the sand before and during the fluidization process is presented and analyzed using measurements and analytical calculations. The dimensions of the cavity and the extent of the fluidized zone are presented and investigated by performing image analysis using digital image correlation (DIC). The analysis indicates that an increase in flow rate and porosity of the sand specimen characterized the onset of soil deformation. The findings also demonstrate considerably higher hydraulic pressures just before fluidization in tests with high RD which indicates larger resistance of dense specimens to the soil fluidization. At the time of fluidization, a significantly larger failure extent is measured in tests with high RD and finer sand specimens. [ABSTRACT FROM AUTHOR] |
| Copyright of Acta Geotechnica is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 161191154 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: The effect of relative density on the response of sand to internal fluidization. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Akrami%2C+Sepideh%22">Akrami, Sepideh</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Sepideh.akrami@ugent.be</i><br /><searchLink fieldCode="AR" term="%22Bezuijen%2C+Adam%22">Bezuijen, Adam</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tehrani%2C+Faraz+S%2E%22">Tehrani, Faraz S.</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Terwindt%2C+Jarno%22">Terwindt, Jarno</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Acta+Geotechnica%22">Acta Geotechnica</searchLink>. Jan2023, Vol. 18 Issue 1, p319-333. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Specific+gravity%22">Specific gravity</searchLink><br /><searchLink fieldCode="DE" term="%22Fluidization%22">Fluidization</searchLink><br /><searchLink fieldCode="DE" term="%22Digital+image+correlation%22">Digital image correlation</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+mechanics%22">Soil mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+particles%22">Soil particles</searchLink><br /><searchLink fieldCode="DE" term="%22Sand%22">Sand</searchLink><br /><searchLink fieldCode="DE" term="%22Image+analysis%22">Image analysis</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Fluidization, in the geotechnical engineering context, is a failure mechanism that can occur during piping, leakage in distribution pipes or leakage through the sheet pile walls and can lead to severe consequences. This phenomenon will occur when the sand bed is subjected to an upward-facing flow. In this case, with sufficient hydraulic gradient, the effective stresses and the contact forces between soil particles will be zero, resulting in mobilization and fluidization of the soil. This paper presents small-scale laboratory tests involving two sands and relative densities (RD). The hydraulic behavior of the sand before and during the fluidization process is presented and analyzed using measurements and analytical calculations. The dimensions of the cavity and the extent of the fluidized zone are presented and investigated by performing image analysis using digital image correlation (DIC). The analysis indicates that an increase in flow rate and porosity of the sand specimen characterized the onset of soil deformation. The findings also demonstrate considerably higher hydraulic pressures just before fluidization in tests with high RD which indicates larger resistance of dense specimens to the soil fluidization. At the time of fluidization, a significantly larger failure extent is measured in tests with high RD and finer sand specimens. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Acta Geotechnica is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=161191154 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11440-022-01574-w Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 319 Subjects: – SubjectFull: Specific gravity Type: general – SubjectFull: Fluidization Type: general – SubjectFull: Digital image correlation Type: general – SubjectFull: Soil mechanics Type: general – SubjectFull: Soil particles Type: general – SubjectFull: Sand Type: general – SubjectFull: Image analysis Type: general Titles: – TitleFull: The effect of relative density on the response of sand to internal fluidization. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Akrami, Sepideh – PersonEntity: Name: NameFull: Bezuijen, Adam – PersonEntity: Name: NameFull: Tehrani, Faraz S. – PersonEntity: Name: NameFull: Terwindt, Jarno IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 18611125 Numbering: – Type: volume Value: 18 – Type: issue Value: 1 Titles: – TitleFull: Acta Geotechnica Type: main |
| ResultId | 1 |
