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Sustainability in the maintenance and protection of architectural surfaces: Innovative water-repellent pozzolana-lime mortars
- Water-repellent renders were studied in order to evaluate their suitability for restoration applications. Water repellent admixtures, such as powdered siloxane-based products and metal soaps (zinc and calcium stearates), were mixed with a pozzolana-lime binder similar to historical binders with hydraulic properties. The chemical-physical and structural properties, the effectiveness and the durability of the water-repellent mortars in different environmental conditions were studied. The influence of the water repellent admixtures was evaluated by FT-IR analyses, by testing the mechanical properties and the behaviour in presence of water. The durability of the water-repellent mortars was evaluated after the exposure to artificial weathering (UV-light and water) and to immersion/drying cycles in saturated sodium sulphate solution. The nature of the water-repellent admixtures influenced both the hydration reactions and the chemical-physical properties of the mortars resulting in differentWater-repellent renders were studied in order to evaluate their suitability for restoration applications. Water repellent admixtures, such as powdered siloxane-based products and metal soaps (zinc and calcium stearates), were mixed with a pozzolana-lime binder similar to historical binders with hydraulic properties. The chemical-physical and structural properties, the effectiveness and the durability of the water-repellent mortars in different environmental conditions were studied. The influence of the water repellent admixtures was evaluated by FT-IR analyses, by testing the mechanical properties and the behaviour in presence of water. The durability of the water-repellent mortars was evaluated after the exposure to artificial weathering (UV-light and water) and to immersion/drying cycles in saturated sodium sulphate solution. The nature of the water-repellent admixtures influenced both the hydration reactions and the chemical-physical properties of the mortars resulting in different resistance to the weathering and to salt crystallization.…
Autor*innen: | L. Falchi, Urs Müller, Patrick Fontana, F.C. Izzo, E. Balliana, G. Biscontin, E. Zendri |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Scienza e beni culturali XXX. 2014 - Quale sostenibilita' per il Restauro? |
Jahr der Erstveröffentlichung: | 2014 |
Verlag: | Edizioni Arcadia Ricerche S.r.l. |
Erste Seite: | 637 |
Letzte Seite: | 648 |
Freie Schlagwörter: | Artificial weathering; Restoration mortars; Salt crystallization; Water-repellent admixtures |
Veranstaltung: | Scienza e beni culturali XXX. 2014 - Quale sostenibilita' per il Restauro? |
Veranstaltungsort: | Brixen, Italy |
Beginndatum der Veranstaltung: | 01.07.2014 |
Enddatum der Veranstaltung: | 04.07.2014 |
ISSN: | 2039-9790 |
ISBN: | 978-88-95409-18-4 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 06.11.2014 |