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Strategy to shape, on a half-meter scale, a geopolymer composite structure by additive manufacturing

Abstract : This work aims at proposing a strategy for 3D-printing geopolymer composite structures at a half-meter scale, without using organic additives. An original printing device based on cartridges is developed and adapted to a 6-axis robot. The yield stress, working time and apparent Young modulus of the extruded material are measured. A devoted software, procedure and printing path are set up, leading to the fabrication of a structure without height limitation, without major geometrical defects or instabilities. The working time ensures the consolidation of the material during printing and good adhesion between layers. As an example, four successive cartridges have been successfully used to elaborate a hollow cylinder (Φ = 35 cm, H = 45 cm).
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https://hal.archives-ouvertes.fr/hal-03146651
Contributor : Julien Archez <>
Submitted on : Friday, February 19, 2021 - 11:36:50 AM
Last modification on : Monday, April 26, 2021 - 10:59:56 AM
Long-term archiving on: : Thursday, May 20, 2021 - 6:34:45 PM

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Julien Archez, Sébastien Maitenaz, Leo Demont, M. Charrier, Romain Mesnil, et al.. Strategy to shape, on a half-meter scale, a geopolymer composite structure by additive manufacturing. Open Ceramics, Elsevier, 2021, 5, pp.100071. ⟨10.1016/j.oceram.2021.100071⟩. ⟨hal-03146651⟩

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