| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ranjbar, Navid
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2023Cementitious phase quantification using deep learningcitations
- 2023A review: Alkali-activated cement and concrete production technologies available in the industrycitations
- 2022Segmentation of backscattered electron images of geopolymers using convolutional autoencoder networkcitations
- 2021Shear strength and life cycle assessment of volcanic ash-based geopolymer and cement stabilized soilcitations
- 2021Evolution of Dynamic Properties of Cross-Anisotropic Sand Subjected to Stress Anisotropycitations
- 2021Rheological characterization of 3D printable geopolymerscitations
- 2020Effects of heat and pressure on hot-pressed geopolymercitations
- 2020Hardening evolution of geopolymers from setting to equilibrium: A reviewcitations
- 2018Clayey soil stabilization using geopolymer and Portland cementcitations
Places of action
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article
Rheological characterization of 3D printable geopolymers
Abstract
This study demonstrates a two-step approach that enables quantification of concrete printability through dynamics mode rheological measurements; I) modeling shearing history during extrusion; II) monitoring the hardening evolution of deposited material by applying a strain smaller than the critical strain. It is shown that the shearing history of the material is removed by imposing a pre-shearing above the critical strain, and zero value yield stress is measured for all specimens. At step II, a linear extrapolation of the green strength development can quantify the static yield stress at the origin, which we used to quantify the material printability. As far as this yield stress surpasses the stress level that exists in the printed structure, the material retains its shape stability. We show the performance of the model on a series of geopolymer mortars with a wide range of rheological properties as a function of material composition, aging, and pre-shearing consequences.