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Particle size ratio and distribution effects on packing behaviour of crushed GMZ bentonite pellets.

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Title: Particle size ratio and distribution effects on packing behaviour of crushed GMZ bentonite pellets.
Authors: Liu, Zhang-Rong1 (AUTHOR), Ye, Wei-Min1 (AUTHOR) ye_tju@tongji.edu.cn, Zhang, Zhao1 (AUTHOR), Wang, Qiong1 (AUTHOR), Chen, Yong-Gui1 (AUTHOR), Cui, Yu-Jun1 (AUTHOR)
Source: Powder Technology. Jun2019, Vol. 351, p92-101. 10p.
Subjects: Particle size distribution, Radioactive waste repositories, Particle interactions, Wood pellets, Pelletizing, Particulate matter, Particles
Abstract: High-density bentonite pellets have been considered as an alternative sealing or buffer material for nuclear waste repository. Investigation on the packing behaviour of pellets is of great interest due to the significant impacts of global density on the hydro-mechanical behaviors of the material. In this manuscript, the packing behaviour of mono-size, binary-size, ternary-size and multi-size mixtures of crushed bentonite pellets were experimentally investigated. The effects of particle size ratio and distribution on packing dry density were analyzed. Results indicate that, for mono-size mixtures, the packing dry density can be decreased by the agglomerating effect of fine particles and wall effect of the container. For the binary-size, ternary-size and multi-size mixtures, there is an optimal particle size distribution corresponding to the peak packing dry density, which was found to be closely related to the particle size ratio of the finest size class to the coarsest one. The effects of particle size ratio and distribution can be interpreted by the 'net positive effect' representing the competition between the positive effects (filling and occupying effects) and the negative effects (loosening, wall, wedging and agglomeration effects) of particle interactions. Unlabelled Image • Packing behaviors of mono-, binary-, ternary- and multi-size mixtures of crushed bentonite pellets were investigated. • The wall effect of container and agglomeration effect of ultra-fine particles decrease the packing dry density. • The particle size ratio between the finest and coarsest size classes governs the peak packing dry density. • A concept of 'net positive effect' was proposed to interpret the effects of particle size ratio and distribution. [ABSTRACT FROM AUTHOR]
Copyright of Powder Technology is the property of Elsevier B.V. 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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DbLabel: Engineering Source
An: 136690695
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Particle size ratio and distribution effects on packing behaviour of crushed GMZ bentonite pellets.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Zhang-Rong%22">Liu, Zhang-Rong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ye%2C+Wei-Min%22">Ye, Wei-Min</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ye_tju@tongji.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Zhao%22">Zhang, Zhao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Qiong%22">Wang, Qiong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Yong-Gui%22">Chen, Yong-Gui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cui%2C+Yu-Jun%22">Cui, Yu-Jun</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Powder+Technology%22">Powder Technology</searchLink>. Jun2019, Vol. 351, p92-101. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Particle+size+distribution%22">Particle size distribution</searchLink><br /><searchLink fieldCode="DE" term="%22Radioactive+waste+repositories%22">Radioactive waste repositories</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+interactions%22">Particle interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Wood+pellets%22">Wood pellets</searchLink><br /><searchLink fieldCode="DE" term="%22Pelletizing%22">Pelletizing</searchLink><br /><searchLink fieldCode="DE" term="%22Particulate+matter%22">Particulate matter</searchLink><br /><searchLink fieldCode="DE" term="%22Particles%22">Particles</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: High-density bentonite pellets have been considered as an alternative sealing or buffer material for nuclear waste repository. Investigation on the packing behaviour of pellets is of great interest due to the significant impacts of global density on the hydro-mechanical behaviors of the material. In this manuscript, the packing behaviour of mono-size, binary-size, ternary-size and multi-size mixtures of crushed bentonite pellets were experimentally investigated. The effects of particle size ratio and distribution on packing dry density were analyzed. Results indicate that, for mono-size mixtures, the packing dry density can be decreased by the agglomerating effect of fine particles and wall effect of the container. For the binary-size, ternary-size and multi-size mixtures, there is an optimal particle size distribution corresponding to the peak packing dry density, which was found to be closely related to the particle size ratio of the finest size class to the coarsest one. The effects of particle size ratio and distribution can be interpreted by the 'net positive effect' representing the competition between the positive effects (filling and occupying effects) and the negative effects (loosening, wall, wedging and agglomeration effects) of particle interactions. Unlabelled Image • Packing behaviors of mono-, binary-, ternary- and multi-size mixtures of crushed bentonite pellets were investigated. • The wall effect of container and agglomeration effect of ultra-fine particles decrease the packing dry density. • The particle size ratio between the finest and coarsest size classes governs the peak packing dry density. • A concept of 'net positive effect' was proposed to interpret the effects of particle size ratio and distribution. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Powder Technology is the property of Elsevier B.V. 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.)
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RecordInfo BibRecord:
  BibEntity:
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      – Type: doi
        Value: 10.1016/j.powtec.2019.03.038
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 10
        StartPage: 92
    Subjects:
      – SubjectFull: Particle size distribution
        Type: general
      – SubjectFull: Radioactive waste repositories
        Type: general
      – SubjectFull: Particle interactions
        Type: general
      – SubjectFull: Wood pellets
        Type: general
      – SubjectFull: Pelletizing
        Type: general
      – SubjectFull: Particulate matter
        Type: general
      – SubjectFull: Particles
        Type: general
    Titles:
      – TitleFull: Particle size ratio and distribution effects on packing behaviour of crushed GMZ bentonite pellets.
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          Name:
            NameFull: Liu, Zhang-Rong
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            NameFull: Ye, Wei-Min
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            NameFull: Zhang, Zhao
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            NameFull: Wang, Qiong
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            NameFull: Chen, Yong-Gui
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            NameFull: Cui, Yu-Jun
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            – D: 01
              M: 06
              Text: Jun2019
              Type: published
              Y: 2019
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              Value: 351
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            – TitleFull: Powder Technology
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