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
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Ji, Yanliang ; Becker, Simon ; Lu, Zichen ; Mezhov, Alexander ; Klitzing, Regine von ; Wolfram, Schmidt ; Stephan, Dietmar |
| Art des Eintrags: | Bibliographie |
| Titel: | Effect of resting time on rheological properties of glass bead suspensions: Depletion and bridging force among particles |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Januar 2024 |
| Verlag: | Wiley Periodicals |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 107 |
| (Heft-)Nummer: | 1 |
| Kollation: | 16 Seiten |
| DOI: | 10.1111/jace.19469 |
| Zugehörige Links: | |
| Kurzbeschreibung (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. |
| Freie Schlagworte: | depletion force, ionic strength, PCE, rheology, resting time |
| Zusätzliche Informationen: | Erstveröffentlichung |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Physik Kondensierter Materie (IPKM) 05 Fachbereich Physik > Institut für Physik Kondensierter Materie (IPKM) > Soft Matter at Interfaces (SMI) |
| Hinterlegungsdatum: | 05 Mär 2024 12:24 |
| Letzte Änderung: | 05 Mär 2024 12:24 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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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 Mär 2024 12:24) [Gegenwärtig angezeigt]
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