Abstract
Concrete 3D printing, a cutting-edge manufacturing technology, is grasping increasing interest in the construction industry. Striking a balance between extrudability and buildability of printable cement-based materials is crucial to ensure successful printing. Although rheology is widely used to assess flow properties, it can bring several challenges when assessing flow properties of stiff materials used in 3D printing, including wall slippage, liquid phase migration, jamming, shear localization, and aging. Moreover, in 3D printing applications, cement-based materials are usually subjected to compressive loads due to the weight of the printed layers. The uniaxial compression test is used to assess the printability of cement-based materials investigated in this study. Both the extrudability and buildability aspects have been discussed. Various mortar mixtures were proportioned using compatible chemical-admixture systems and different sand-to-cement ratios. The effect of the latter designing parameters on the printability of cement-based materials was evaluated. On the other hand, special attention was given to the stress-strain behavior of the investigated mixtures.
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Harbouz, I., Yahia, A., Rozière, E., Loukili, A. (2022). Printability Assessment of Cement-Based Materials Using Uniaxial Compression Test. In: Buswell, R., Blanco, A., Cavalaro, S., Kinnell, P. (eds) Third RILEM International Conference on Concrete and Digital Fabrication. DC 2022. RILEM Bookseries, vol 37. Springer, Cham. https://doi.org/10.1007/978-3-031-06116-5_47
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DOI: https://doi.org/10.1007/978-3-031-06116-5_47
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