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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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Figueiredo, Stefan Chaves
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2022Design and analyses of printable strain hardening cementitious composites with optimized particle size distributioncitations
- 2021Freeze-thaw resistance and air-void analysis of concrete with recycled glass-pozzolan using X-ray micro-tomographycitations
- 2021Chloride Ion Penetration into Cracked UHPFRC During Wetting-drying Cyclescitations
- 2021Assessment of freeze-thaw resistance of cement based concrete with ground glass – pozzolan through X-ray microtomography
- 2020Improving printability of limestone-calcined clay-based cementitious materials by using viscosity-modifying admixturecitations
- 2020Mechanical Behavior of Printed Strain Hardening Cementitious Compositescitations
- 2020Fundamental investigation on the frost resistance of mortar with microencapsulated phase change materialscitations
- 20193D Concrete Printing for Structural Applications
- 2019On The Role Of Soft Inclusions On The Fracture Behaviour Of Cement Pastecitations
- 2019Effect of viscosity modifier admixture on Portland cement paste hydration and microstructurecitations
- 2019Limestone and Calcined Clay-Based Sustainable Cementitious Materials for 3D Concrete Printingcitations
- 2019Frost Damage Progression Studied Through X-Ray tomography In Mortar With Phase Change Materials
- 2019The Effect of Viscosity-Modifying Admixture on the Extrudability of Limestone and Calcined Clay-Based Cementitious Material for Extrusion-Based 3D Concrete Printingcitations
- 2019An approach to develop printable strain hardening cementitious compositescitations
- 2019Numerical investigation of crack self-sealing in cement-based composites with superabsorbent polymerscitations
- 2018Mechanical properties of ductile cementitious composites incorporating microencapsulated phase change materialscitations
- 2018Piezoresistive properties of cementitious composites reinforced by PVA fibrescitations
- 2018Durability of fibre reinforced cementitious composites
- 2018Modelling strategies for the study of crack self-sealing in mortar with superabsorbent polymers
- 2017Development of ductile cementitious composites incorporating microencapsulated phase change materialscitations
- 2017Experimentally validated multi-scale modelling scheme of deformation and fracture of cement pastecitations
- 2016Induction healing of concrete reinforced by bitumen-coated steel fibrescitations
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.