Effect of Curing Temperature on the Alkali Activation of German Brown Coal Fly Ash
- Due to environmental concerns regarding the use of Portland cement as the principal binder material in concrete and mortar it is imperative to identify alternative materials that could reduce the carbon footprint of the construction industry. One alternative to address these issues is the use of alkali activated materials, in particular, when based on waste streams that currently have no or only limited industrial application. This paper reports a preliminary study into the synthesis of geopolymer mortar utilizing Brown Coal Fly Ash. The ash had a CaO content of ~39%, indicating that synthesis at ambient or low temperature may be feasible. The paper reports initial trials on the effect of curing temperature, ambient to 120 °C, on the mechanical properties of the mortars produced. The results showed that ambient cured mortar achieved a compressive strength of 6.5 MPa at 3 days. A curing temperature of 60 °C gave the optimum results with a compressive strength of almost 20 MPa and aDue to environmental concerns regarding the use of Portland cement as the principal binder material in concrete and mortar it is imperative to identify alternative materials that could reduce the carbon footprint of the construction industry. One alternative to address these issues is the use of alkali activated materials, in particular, when based on waste streams that currently have no or only limited industrial application. This paper reports a preliminary study into the synthesis of geopolymer mortar utilizing Brown Coal Fly Ash. The ash had a CaO content of ~39%, indicating that synthesis at ambient or low temperature may be feasible. The paper reports initial trials on the effect of curing temperature, ambient to 120 °C, on the mechanical properties of the mortars produced. The results showed that ambient cured mortar achieved a compressive strength of 6.5 MPa at 3 days. A curing temperature of 60 °C gave the optimum results with a compressive strength of almost 20 MPa and a flexural strength of 3.5 MPa obtained.…
Autor*innen: | D. W. Law, Patrick SturmORCiD, Gregor GluthORCiD, C. Gunasekara |
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Persönliche Herausgeber*innen: | I. B. Valente, A. Ventura Gouveia, S. S. Dias |
Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Proceedings of the 3rd RILEM Spring Convention and Conference (RSCC 2020) – Volume 2: New Materials and Structures for Ultra-durability |
Jahr der Erstveröffentlichung: | 2021 |
Organisationseinheit der BAM: | 7 Bauwerkssicherheit |
7 Bauwerkssicherheit / 7.4 Baustofftechnologie | |
Verlag: | Springer |
Verlagsort: | Cham |
Erste Seite: | 69 |
Letzte Seite: | 77 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Angewandte Physik |
Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau | |
Freie Schlagwörter: | Alkali-activated materials; Brown Coal Fly Ash; Lignite Coal |
Themenfelder/Aktivitätsfelder der BAM: | Infrastruktur |
Umwelt | |
Umwelt / Circular Economy | |
Veranstaltung: | 3rd RILEM Spring Convention and Conference (RSCC 2020) |
Veranstaltungsort: | Guimarães, Portugal |
Beginndatum der Veranstaltung: | 10.03.2020 |
Enddatum der Veranstaltung: | 14.03.2020 |
DOI: | 10.1007/978-3-030-76551-4_7 |
ISBN: | 978-3-030-76550-7 |
ISBN: | 978-3-030-76551-4 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 09.08.2021 |
Referierte Publikation: | Nein |