Ji, Yanliang ; Becker, Simon ; Lu, Zichen ; Mezhov, Alexander ; Klitzing, Regine von ; Wolfram, Schmidt ; Stephan, Dietmar (2024)
Effect of resting time on rheological properties of glass bead suspensions: Depletion and bridging force among particles.
In: Journal of the American Ceramic Society, 107 (1)
doi: 10.1111/jace.19469
Article, Bibliographie
This is the latest version of this item.
Abstract
The effect of resting time on the rheological properties of cement suspensions is generally explained by early formed structure and overconsumption of polycarboxylate superplasticizers (PCEs). In this paper, we propose that the influence of resting time on the rheological properties is closely related to size variation of non-absorbed PCE. To identify this, glass bead suspensions were prepared with various amounts of PCE and ionic solution, and their rheological properties were evaluated at various times. We found that the yield stress increases with time at higher PCE concentrations and higher ionic strength solutions. Adsorbed PCE during resting tends to bridge the particles rather than disperse them. In addition, it was found that hydrodynamic radius of PCE increased with resting time, and depletion forces resulting from non-absorbed PCE size changes correlate well with the increased yield stress.
| Item Type: | Article |
|---|---|
| Erschienen: | 2024 |
| Creators: | Ji, Yanliang ; Becker, Simon ; Lu, Zichen ; Mezhov, Alexander ; Klitzing, Regine von ; Wolfram, Schmidt ; Stephan, Dietmar |
| Type of entry: | Bibliographie |
| Title: | Effect of resting time on rheological properties of glass bead suspensions: Depletion and bridging force among particles |
| Language: | English |
| Date: | 1 January 2024 |
| Publisher: | Wiley Periodicals |
| Journal or Publication Title: | Journal of the American Ceramic Society |
| Volume of the journal: | 107 |
| Issue Number: | 1 |
| Collation: | 16 Seiten |
| DOI: | 10.1111/jace.19469 |
| Corresponding Links: | |
| Abstract: | The effect of resting time on the rheological properties of cement suspensions is generally explained by early formed structure and overconsumption of polycarboxylate superplasticizers (PCEs). In this paper, we propose that the influence of resting time on the rheological properties is closely related to size variation of non-absorbed PCE. To identify this, glass bead suspensions were prepared with various amounts of PCE and ionic solution, and their rheological properties were evaluated at various times. We found that the yield stress increases with time at higher PCE concentrations and higher ionic strength solutions. Adsorbed PCE during resting tends to bridge the particles rather than disperse them. In addition, it was found that hydrodynamic radius of PCE increased with resting time, and depletion forces resulting from non-absorbed PCE size changes correlate well with the increased yield stress. |
| Uncontrolled Keywords: | depletion force, ionic strength, PCE, rheology, resting time |
| Additional Information: | Erstveröffentlichung |
| Classification DDC: | 500 Science and mathematics > 530 Physics 600 Technology, medicine, applied sciences > 660 Chemical engineering |
| Divisions: | 05 Department of Physics 05 Department of Physics > Institute for Condensed Matter Physics 05 Department of Physics > Institute for Condensed Matter Physics > Soft Matter at Interfaces (SMI) |
| Date Deposited: | 05 Mar 2024 12:24 |
| Last Modified: | 05 Mar 2024 12:24 |
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| Suche nach Titel in: | TUfind oder in Google |
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Effect of resting time on rheological properties of glass bead suspensions: Depletion and bridging force among particles. (deposited 20 Feb 2024 08:16)
- Effect of resting time on rheological properties of glass bead suspensions: Depletion and bridging force among particles. (deposited 05 Mar 2024 12:24) [Currently Displayed]
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