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

Title data

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. Vol. 12 (2022) Issue 3 . - No. 1152.
ISSN 2076-3417
DOI: https://doi.org/10.3390/app12031152

Official URL: Volltext

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: insulating plaster; calcium sulfoaluminate cement; hollow glass microspheres; thermal insulation; energetic renovation of buildings
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Ceramic Materials
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 07 Feb 2022 09:13
Last Modified: 07 Feb 2022 09:13
URI: https://eref.uni-bayreuth.de/id/eprint/68583