Mechanical Resistance due to Shearing of Partially Wet Granular Media
Mixing granular media with a given amount of liquid is an operation conducted and used intensively for the preparation of concrete. The power and time required to obtain good homogeneity of the granular paste are known to have a complex relationship with the physical properties of the particles, wit...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hosokawa Powder Technology Foundation
2013-12-01
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| Series: | KONA Powder and Particle Journal |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/kona/30/0/30_2013012/_html/-char/en |
| _version_ | 1818459176362311680 |
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| author | Driss Oulahna Romain Collet Alain de Ryck |
| author_facet | Driss Oulahna Romain Collet Alain de Ryck |
| author_sort | Driss Oulahna |
| collection | DOAJ |
| description | Mixing granular media with a given amount of liquid is an operation conducted and used intensively for the preparation of concrete. The power and time required to obtain good homogeneity of the granular paste are known to have a complex relationship with the physical properties of the particles, with the liquid and with the mixer design. In this paper some of these issues are addressed by evaluating the shear resistance of a granular paste. Using model spherical materials (glass beads) and ground and sieved minerals (calcite CaCO3), we investigate experimentally the impact of the particle size, liquid amount and morphology of the particles.From quasi-static experiments in shear cells, different regimes of shear resistance are revealed. In dry conditions, van der Waals’ forces dominate. In wet conditions, a capillary or consolidation regime where shear resistance is dominated by capillary forces is strongly impacted by the morphology of the particles and by the formation of texture. These regimes are qualitatively observed in a bowl mixer for which the variation of the current intensity correlates with the shear resistance observed in quasi-static experiments. |
| first_indexed | 2024-12-14T23:10:11Z |
| format | Article |
| id | doaj.art-5f5a04a1573741cda44d1b34778b3f75 |
| institution | Directory Open Access Journal |
| issn | 0288-4534 2187-5537 |
| language | English |
| last_indexed | 2024-12-14T23:10:11Z |
| publishDate | 2013-12-01 |
| publisher | Hosokawa Powder Technology Foundation |
| record_format | Article |
| series | KONA Powder and Particle Journal |
| spelling | doaj.art-5f5a04a1573741cda44d1b34778b3f752022-12-21T22:44:13ZengHosokawa Powder Technology FoundationKONA Powder and Particle Journal0288-45342187-55372013-12-0130010911810.14356/kona.2013012konaMechanical Resistance due to Shearing of Partially Wet Granular MediaDriss Oulahna0Romain Collet1Alain de Ryck2Université de Toulouse, Mines Albi, CNRS, Centre RAPSODEEUniversité de Toulouse, Mines Albi, CNRS, Centre RAPSODEEUniversité de Toulouse, Mines Albi, CNRS, Centre RAPSODEEMixing granular media with a given amount of liquid is an operation conducted and used intensively for the preparation of concrete. The power and time required to obtain good homogeneity of the granular paste are known to have a complex relationship with the physical properties of the particles, with the liquid and with the mixer design. In this paper some of these issues are addressed by evaluating the shear resistance of a granular paste. Using model spherical materials (glass beads) and ground and sieved minerals (calcite CaCO3), we investigate experimentally the impact of the particle size, liquid amount and morphology of the particles.From quasi-static experiments in shear cells, different regimes of shear resistance are revealed. In dry conditions, van der Waals’ forces dominate. In wet conditions, a capillary or consolidation regime where shear resistance is dominated by capillary forces is strongly impacted by the morphology of the particles and by the formation of texture. These regimes are qualitatively observed in a bowl mixer for which the variation of the current intensity correlates with the shear resistance observed in quasi-static experiments.https://www.jstage.jst.go.jp/article/kona/30/0/30_2013012/_html/-char/enwet granular mixingshearingquasi-static systempowder mechanics |
| spellingShingle | Driss Oulahna Romain Collet Alain de Ryck Mechanical Resistance due to Shearing of Partially Wet Granular Media KONA Powder and Particle Journal wet granular mixing shearing quasi-static system powder mechanics |
| title | Mechanical Resistance due to Shearing of Partially Wet Granular Media |
| title_full | Mechanical Resistance due to Shearing of Partially Wet Granular Media |
| title_fullStr | Mechanical Resistance due to Shearing of Partially Wet Granular Media |
| title_full_unstemmed | Mechanical Resistance due to Shearing of Partially Wet Granular Media |
| title_short | Mechanical Resistance due to Shearing of Partially Wet Granular Media |
| title_sort | mechanical resistance due to shearing of partially wet granular media |
| topic | wet granular mixing shearing quasi-static system powder mechanics |
| url | https://www.jstage.jst.go.jp/article/kona/30/0/30_2013012/_html/-char/en |
| work_keys_str_mv | AT drissoulahna mechanicalresistanceduetoshearingofpartiallywetgranularmedia AT romaincollet mechanicalresistanceduetoshearingofpartiallywetgranularmedia AT alainderyck mechanicalresistanceduetoshearingofpartiallywetgranularmedia |