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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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Chang, Ze
Eindhoven University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2023An enhanced lattice beam element model for the numerical simulation of rate-dependent self-healing in cementitious materials.citations
- 2023An enhanced lattice beam element model for the numerical simulation of rate-dependent self-healing in cementitious materialscitations
- 2022How reproducible are surface areas calculated from the BET equation?citations
- 2022How reproducible are surface areas calculated from the BET equation?citations
- 2022How Reproducible are Surface Areas Calculated from the BET Equation?citations
- 2022How Reproducible are Surface Areas Calculated from the BET Equation?citations
- 2022How Reproducible are Surface Areas Calculated from the BET Equation?citations
- 2020Improving printability of limestone-calcined clay-based cementitious materials by using viscosity-modifying admixturecitations
- 2020Improving printability of limestone-calcined clay-based cementitious materials by using viscosity-modifying admixturecitations
- 2020Extended Lattice Model to Simulate the Printing Process of 3D Printed Cementitious Materialscitations
Places of action
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article
Improving printability of limestone-calcined clay-based cementitious materials by using viscosity-modifying admixture
Abstract
In 3D concrete printing (3DCP), it is necessary to meet contradicting rheological requirements: high fluidity during pumping and extrusion, and high stability and viscosity at rest to build the layered structure. In this paper, the impact of the hydroxypropyl methylcellulose (HPMC)-based viscosity-modifying admixture (VMA) on the 3D printability and mechanical performance of a limestone and calcined clay based cementitious material is investigated. A combination of VMA and superplasticizer was used for that purpose. In this case, controlling the competitive effects between VMA and superplasticizer becomes critical. The main strategy for 3D printing in this study was to add an optimal dosage of VMA in the solid suspension that was already mixed with water and superplasticizer. A lab-scale 3DCP setup was developed and demonstrated as well. A series of tests was performed to characterize the effects of VMA on flowability, extrudability, open time, buildability, green strength, hydration, compressive strength, and air void content and distribution. Experiments performed in this study showed that the mixture containing 0.24% (of the binder mass) of VMA exhibited satisfactory 3D printability and optimal mechanical performance. Finally, the results, limitations, and perspectives of the current research were discussed.