Abstract
Digital fabrication with concrete requires set-on-demand and self-support of fresh material without formwork. To this end, the twin-pipe pumping strategy has been proposed, employing a motionless static mixer to introduce a chemical trigger into fresh concrete. In this short paper, we present the concept and recent progress in twin-pipe pumping. We start with the characterization and optimization of the static mixing process in both numerical and experimental approaches. This is followed by an overview of various twin-mixture designs based on different hydration reaction mechanisms. Finally, the mechanical behavior of twin-pipe concrete is discussed. Show more
Publication status
publishedExternal links
Book title
Fourth RILEM International Conference on Concrete and Digital FabricationJournal / series
RILEM BookseriesVolume
Pages / Article No.
Publisher
SpringerEvent
Subject
Digital concrete; 3D printing; Set-on-demand; Inline mixing; Static mixerOrganisational unit
03891 - Flatt, Robert J. / Flatt, Robert J.
02284 - NFS Digitale Fabrikation / NCCR Digital Fabrication
Notes
Conference Presentation held on September 5, 2024.More
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ETH Bibliography
yes
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