Design and Fabrication of a Non-standard, Structural Concrete Column Using Eggshell: Ultra-Thin, 3D Printed Formwork
Open access
Datum
2020Typ
- Conference Paper
ETH Bibliographie
yes
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Abstract
This paper describes the design and fabrication process of a concrete column cast in ultra-thin, 3D printed formwork, using a process known as Eggshell. The column was prefabricated as part of a real-world construction project, serving as the main load-bearing element for a reciprocal timber frame structure. The fabrication of the column required upscaling of the Eggshell process, to allow for the fabrication of elements of an architectural scale. Furthermore, several challenges had to be addressed such as: integration of reinforcement, establishing the formwork design space, and scaling up the 3D printing process. For the production of the final column a 1.5 mm thin formwork was 3D printed, after which it was combined with a prefabricated reinforcement cage and filled with concrete in a set-on-demand casting process. The successful realization of the project provides a first example of a full-scale building element produced with the Eggshell fabrication process. By 3D printing the formwork, geometrical freedom in concrete construction is greatly expanded, as well as formwork waste reduced. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000425808Publikationsstatus
publishedExterne Links
Buchtitel
Second RILEM International Conference on Concrete and Digital FabricationZeitschrift / Serie
RILEM BookseriesBand
Seiten / Artikelnummer
Verlag
SpringerKonferenz
Organisationseinheit
03708 - Gramazio, Fabio / Gramazio, Fabio
03709 - Kohler, Matthias / Kohler, Matthias
03891 - Flatt, Robert J. / Flatt, Robert J.
09469 - Kaufmann, Walter / Kaufmann, Walter
02284 - NFS Digitale Fabrikation / NCCR Digital Fabrication
ETH Bibliographie
yes
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