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dc.contributor.author
Szabo, Anna
dc.contributor.author
Reiter, Lex
dc.contributor.author
Lloret-Fritschi, Ena
dc.contributor.author
Gramazio, Fabio
dc.contributor.author
Kohler, Matthias
dc.contributor.author
Flatt, Robert J.
dc.date.accessioned
2020-06-04T07:10:36Z
dc.date.available
2020-06-04T02:37:27Z
dc.date.available
2020-06-04T07:10:36Z
dc.date.issued
2020-05
dc.identifier.issn
1996-1944
dc.identifier.other
10.3390/ma13092084
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/418038
dc.identifier.doi
10.3929/ethz-b-000418038
dc.description.abstract
The construction industry is a slow adopter of new technologies and materials. However, interdisciplinary research efforts in digital fabrication methods with concrete aim to make a real impact on the way we build by showing faster production, higher quality and enlarged freedom of design. In this paper, the potential and constraints of a specific digital slip-forming process, smart dynamic casting (SDC), are investigated with a material-focused approach in the complex task of producing thin folded structures. Firstly, the workability and the strength evolution of different material compositions are studied to achieve the constant processing rate for SDC. Secondly, friction between the formwork walls and the concrete, a key aspect in slip-casting, is studied with a simplified experimental setup to identify if any of these mixes would provide an advantage for processing. Finally, a theoretical framework is constructed to link the material properties, the process conditions and the designed geometry. This framework introduces the ‘SDC number’ as a simplified approach to formulate the process window, the suitable conditions for slip-forming. The experimental results prove the assumption of the model that friction is proportional to yield stress for all base compositions and acceleration methods regardless of the filling history. The results are evaluated in the context of the narrow process window of thin folded structures as well as the wider process window of columns. The necessity of consistent strength evolution is underlined for narrow windows. Further, friction is shown to be the highest initially, thus with both narrow and wide process windows, after a successful start-up the continuation of slipping is less prone to failure. The proposed theoretical model could provide material and geometry-specific slipping strategy for start time and slipping rate during production.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
MDPI
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
smart dynamic casting
en_US
dc.subject
set on demand
en_US
dc.subject
accelerator
en_US
dc.subject
process window
en_US
dc.subject
SDC number
en_US
dc.title
Mastering yield stress evolution and formwork friction for smart dynamic casting
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2020-05-01
ethz.journal.title
Materials
ethz.journal.volume
13
en_US
ethz.journal.issue
9
en_US
ethz.pages.start
2084
en_US
ethz.size
24 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Basel
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02606 - Institut für Baustoffe (IfB) / Institute for Building Materials::03891 - Flatt, Robert J. / Flatt, Robert J.
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02100 - Dep. Architektur / Dep. of Architecture::02284 - NFS Digitale Fabrikation / NCCR Digital Fabrication
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02606 - Institut für Baustoffe (IfB) / Institute for Building Materials::03891 - Flatt, Robert J. / Flatt, Robert J.
ethz.date.deposited
2020-06-04T02:37:30Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-06-04T07:10:47Z
ethz.rosetta.lastUpdated
2022-03-29T02:13:23Z
ethz.rosetta.versionExported
true
ethz.COinS
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