Kißling, P.A.; Lübkemann, F.; Mundstock, A.; Lohaus, L.; Haist, M. et al.: Is freeze-drying an alternative to solvent exchange for the hydration stop of cementitious suspensions?. In: Cement and concrete research : an international journal 159 (2022), 106841. DOI: https://doi.org/10.1016/j.cemconres.2022.106841
Zusammenfassung: | |
In order to understand the rheological properties of cementitious suspensions at early stages, among other phases, the formation of ettringite and its time-dependent influence, whether by amount or morphology, has to be examined in detail using a suitable method to stop the hydration process. It is state-of-the-art to exchange water with isopropanol, however, the water initially remains in the system possibly leading to reduced time resolution. Our group raised the question if freeze-drying or the combination of the water-isopropanol exchange with subsequent freeze-drying might be a suitable technique to achieve an almost complete hydration stop at any time. Recently, it was shown under which circumstances low-pressure characterization techniques can be employed without destroying the samples due to loss of crystal bound water. Here, by implementing these recent results, we show under which circumstances freeze-drying indeed can be employed as fast hydration stop method. © 2021 | |
Lizenzbestimmungen: | CC BY-NC-ND 4.0 Unported |
Publikationstyp: | Article |
Publikationsstatus: | publishedVersion |
Erstveröffentlichung: | 2022 |
Die Publikation erscheint in Sammlung(en): | Fakultät für Bauingenieurwesen und Geodäsie Naturwissenschaftliche Fakultät |
Pos. | Land | Downloads | ||
---|---|---|---|---|
Anzahl | Proz. | |||
1 | Germany | 32 | 48,48% | |
2 | United States | 14 | 21,21% | |
3 | Russian Federation | 4 | 6,06% | |
4 | India | 4 | 6,06% | |
5 | China | 4 | 6,06% | |
6 | Czech Republic | 2 | 3,03% | |
7 | Taiwan | 1 | 1,52% | |
8 | Iraq | 1 | 1,52% | |
9 | France | 1 | 1,52% | |
10 | Belgium | 1 | 1,52% | |
andere | 2 | 3,03% |
Hinweis
Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.