Composite Facade Elements with Self-Cleaning Surface made of Ultra-High-Performance Concrete (UHPC)

  • In the framework of the European project H-House various concrete façade elements were developed with the aim to ensure a long service life by combining a very durable material with self-cleaning properties. The façade elements presented are made of a shell of UHPC filled with blocks of aerated autoclaved concrete as insulating material. Self-cleaning properties were realized amongst others by imprinting a microstructure into the surface during casting. The paper focuses on selected technological aspects of the manufacturing process of prototypes which had to be performed in two concreting sections. Furthermore the challenges faced when upscaling the self-cleaning properties are addressed and the strategy to assess the self-cleaning properties by measuring the contact and the roll-off angel is presented. The results show that a successfull upscalaing process requires detailed planning and that the best results can often be achieved with a moderate work effort or material use.

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Autoren/innen:Julia von Werder
Koautoren/innen:P. Fontana, Johannes Hoppe, S. Bilgin, Birgit Meng
Jahr der Erstveröffentlichung:2020
Organisationseinheit der BAM:7 Bauwerkssicherheit
7 Bauwerkssicherheit / 7.1 Baustoffe
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten
Freie Schlagwörter:Adhesive Pull-Strength; Architectural Concrete; Facade Elements; Microstructure; Self-Cleaning Properties; Ultra-High-Performance Concrete
Themenfelder/Aktivitätsfelder der BAM:Material
Material / Degradation und Life Cycle von Werkstoffen
Material / Materialien und Stoffe
Veranstaltung:XV International Conference on Durability of Building Materials and Components (DBMC 2020)
Veranstaltungsort:Online meeting
Beginndatum der Veranstaltung:20.10.2020
Enddatum der Veranstaltung:23.10.2020
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:07.01.2021
Referierte Publikation:Nein