Structural investigations on one-part geopolymers with different chemical composition
- Geopolymers are promising alkali activated materials with a wide range of possible applications like heat-resistant coatings and adhesives or concretes with lower C02 emissions than conventional Portland cement-based systems. Conventional ("two-part") geopolymers are synthesized by an activation of aluminosilicate feedstocks like metakaolin or blast furnace slags with highly alkaline solutions like sodium hydroxide solutions and/or water glass solutions. A more recent approach are so called one-part geopolymers, where the alkaline activator is provided in solid form, so that only water has to be added to initiate the geopolymerisation reaction. The handling of alkaline solutions is avoided, which possesses several advantages compared to conventional geopolymers, in particular regarding safety and health issues, and, thus, it improves economic and social acceptance of these binders. However, the new formulations are less exhaustively studied and the knowledge about conventionalGeopolymers are promising alkali activated materials with a wide range of possible applications like heat-resistant coatings and adhesives or concretes with lower C02 emissions than conventional Portland cement-based systems. Conventional ("two-part") geopolymers are synthesized by an activation of aluminosilicate feedstocks like metakaolin or blast furnace slags with highly alkaline solutions like sodium hydroxide solutions and/or water glass solutions. A more recent approach are so called one-part geopolymers, where the alkaline activator is provided in solid form, so that only water has to be added to initiate the geopolymerisation reaction. The handling of alkaline solutions is avoided, which possesses several advantages compared to conventional geopolymers, in particular regarding safety and health issues, and, thus, it improves economic and social acceptance of these binders. However, the new formulations are less exhaustively studied and the knowledge about conventional geopolymers cannot simply be transferred to this new class of binders.…
Autor*innen: | Patrick SturmORCiD, Gregor GluthORCiD, H.J.H. Brouwers, Hans-Carsten KühneORCiD |
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Persönliche Herausgeber*innen: | H.-M. Ludwig |
Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | 19. Ibausil - Internationale Baustofftagung |
Jahr der Erstveröffentlichung: | 2015 |
Herausgeber (Institution): | F.A. Finger - Institut für Baustoffkunde / Bauhaus-Universität Weimar |
Jahrgang/Band: | 2 |
Erste Seite: | P1.77, 2-857 - 2-864 |
Freie Schlagwörter: | Geopolymers; One-part mix |
Veranstaltung: | 19. Ibausil - Internationale Baustofftagung |
Veranstaltungsort: | Weimar, Germany |
Beginndatum der Veranstaltung: | 16.09.2015 |
Enddatum der Veranstaltung: | 18.09.2015 |
ISBN: | 978-3-00-050225-5 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Nein |