Possibilities for improving the properties of UHPC by means of thermal treatment
- A further improvement of the excellent properties of UHPC can be realized with thermal Treatment. Like for normal concrete, it accelerates the hardening and prevents shrinkage after the treatment. Additionally, an increase in strength can be achieved. Aim of this study was the optimisation of the thermal Treatment conditions of UHPC for very different Treatment methods; heat Treatment at 90 °C for unprotected and sealed samples, hot water bath at 90 °C and hydrothermal Treatment at 185 °C/1.1 MPa. The pre-storage time and the dwell time were systematically varied for each method to gain a higher strength. The compressive strength depends on the manner of Treatment at which higher water accessibility leads to higher strengths. The Phase composition changes considerably with different Treatment tempereatures. Finally, it can activate unhydrated binder components forming additional C-S-H, leading to higher strength.
Autor*innen: | Birgit MengORCiD |
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Koautor*innen: | Christian Selleng, Patrick Fontana, Sebastian Simon |
Dokumenttyp: | Vortrag |
Veröffentlichungsform: | Präsentation |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2017 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau | |
Freie Schlagwörter: | Autoclaving; Building Materials; Heat treatment; Ultra-High Performance Concrete (UHPC); X-ray diffraction (XRD) |
Veranstaltung: | International Symposium on Ultra-High Perfomance Fibre-Reinforced Concrete UHPFRC 2017 |
Veranstaltungsort: | Montpellier, France |
Beginndatum der Veranstaltung: | 02.10.2017 |
Enddatum der Veranstaltung: | 04.10.2017 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 19.10.2017 |
Referierte Publikation: | Nein |
Eingeladener Vortrag: | Nein |