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Mineral Composite Plaster Containing Hollow Glass Microspheres and CSA Cement for Building Insulation

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Zelder, Stefan ; Rosin, Andreas ; Helling, Dominik ; Gerdes, Thorsten ; Scharfe, Friedbert ; Schafföner, Stefan:
Mineral Composite Plaster Containing Hollow Glass Microspheres and CSA Cement for Building Insulation.
In: Applied Sciences. Bd. 12 (2022) Heft 3 . - 1152.
ISSN 2076-3417
DOI: https://doi.org/10.3390/app12031152

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Projektfinanzierung: Deutsche Forschungsgemeinschaft

Abstract

Renovation of old buildings plays a key role in the sustainable energy transition because they are often poorly insulated and, therefore, lose a lot of heat through walls and ceilings. An important measure of renovation is façade insulation. Established and widely used materials include rigid expanded polystyrene (EPS) and extruded polystyrene (XPS) insulation boards. However, these boards do not easily follow the form of non-planar surfaces such as individually formed, ornamented, or bent façades. Furthermore, fire protection of these boards requires the addition of, for example, hazardous brominated flame retardants that impede recycling. This paper investigates a novel alternative insulating composite plaster. It is purely inorganic and can be applied easily by casting or wet spraying to any wall or ceiling element. The composite material consists of only two components: micro hollow glass microspheres as the insulating light component and calcium sulfoaluminate cement as the binder. Various compositions containing these components were cast, hydraulically set, and characterized with respect to microstructure, phase development during hydration, and thermal conductivity. With an increasing amount of hollow glass spheres, the density decreased to less than 0.2 g·cm−1, and the thermal conductivity reached 0.04 to 0.05 W·m−1K−1, fulfilling the demands of building insulation.

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Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: insulating plaster; calcium sulfoaluminate cement; hollow glass microspheres; thermal insulation; energetic renovation of buildings
Institutionen der Universität: Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Keramische Werkstoffe
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Keramische Werkstoffe > Lehrstuhl Keramische Werkstoffe - Univ.-Prof. Dr.-Ing. Stefan Schafföner
Forschungseinrichtungen > Forschungsstellen > Keylab Glastechnologie
Forschungseinrichtungen
Forschungseinrichtungen > Forschungsstellen
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 07 Feb 2022 09:13
Letzte Änderung: 11 Sep 2023 12:13
URI: https://eref.uni-bayreuth.de/id/eprint/68583