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Temperature dependent modelling approach for early age behavior of printable mortars
- Structural build-up describes the stability and early-age strength development of fresh mortar used in 3D printing. lt is influenced by several factors, i.e. the composition of the print able material, the printing regime, and the ambient conditions. The existing modelling approaches for structural build-up usually define the model parameters for a specific material composition with out considering the influence of the ambient conditions. The goal of this contribution is to explicitly include the temperature dependency in the modelling approach. Temperature changes have signifi cant impact on the structural build-up process: an increase of the temperature leads to a faster dissol ution of cement phases and accelerates hydration. The proposed extended model includes temperature dependency using the Arrhenius theory. The new model parameters are successfully calibrated based on Viskomat measurement data using Bayesian inference. Furthermore, a higher impact of the temperature in theStructural build-up describes the stability and early-age strength development of fresh mortar used in 3D printing. lt is influenced by several factors, i.e. the composition of the print able material, the printing regime, and the ambient conditions. The existing modelling approaches for structural build-up usually define the model parameters for a specific material composition with out considering the influence of the ambient conditions. The goal of this contribution is to explicitly include the temperature dependency in the modelling approach. Temperature changes have signifi cant impact on the structural build-up process: an increase of the temperature leads to a faster dissol ution of cement phases and accelerates hydration. The proposed extended model includes temperature dependency using the Arrhenius theory. The new model parameters are successfully calibrated based on Viskomat measurement data using Bayesian inference. Furthermore, a higher impact of the temperature in the re-flocculation as in the structuration stage is observed.…
Autor*innen: | Annika Robens-Radermacher, Jörg F. UngerORCiD, Alexander MezhovORCiD, Wolfram SchmidtORCiD |
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Persönliche Herausgeber*innen: | F. Biondini, D. M. Frangopo |
Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Life-Cycle of Structures and Infrastructure Systems |
Jahr der Erstveröffentlichung: | 2023 |
Organisationseinheit der BAM: | 7 Bauwerkssicherheit |
7 Bauwerkssicherheit / 7.4 Baustofftechnologie | |
7 Bauwerkssicherheit / 7.7 Modellierung und Simulation | |
Veröffentlichende Institution: | Bundesanstalt für Materialforschung und -prüfung (BAM) |
Verlag: | CRC Press |
Jahrgang/Band: | 1st Edition |
Erste Seite: | 1193 |
Letzte Seite: | 1200 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau | |
Freie Schlagwörter: | 3D concrete printing; Material characterization; Model calibration; Structural build-up; Thixotropy |
Themenfelder/Aktivitätsfelder der BAM: | Infrastruktur |
Material | |
Veranstaltung: | The Eighth International Symposium on Life-Cycle Civil Engineering (IALCCE 2023) |
Veranstaltungsort: | Milano, Italien |
Beginndatum der Veranstaltung: | 02.07.2023 |
Enddatum der Veranstaltung: | 06.07.2023 |
DOI: | 10.1201/9781003323020-146 |
URN: | urn:nbn:de:kobv:b43-582175 |
ISSN: | 978-1-003-32302-0 |
ISBN: | 978-1-003-32302-0 |
Verfügbarkeit des Dokuments: | Datei für die Öffentlichkeit verfügbar ("Open Access") |
Lizenz (Deutsch): | Creative Commons - CC BY - Namensnennung 4.0 International |
Datum der Freischaltung: | 11.09.2023 |
Referierte Publikation: | Nein |
Schriftenreihen ohne Nummerierung: | Wissenschaftliche Artikel der BAM |