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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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França De Mendonça Filho, F.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024An analytical equation to predict mortar spalling at laboratory scalecitations
- 2024An analytical equation to predict mortar spalling at laboratory scalecitations
- 2023Non-destructive screening methodology based on handheld XRF for the classification of concretecitations
- 2022Surface effects of molten slag spills on calcium aluminate cement pastecitations
- 2022Nano-modification in digital manufacturing of cementitious compositescitations
- 2021Thermal, optical and mechanical properties of new glass compositions containing fly ash
- 2021Thermal, optical and mechanical properties of new glass compositions containing fly ash
- 2021Characterization of air-void systems in 3D printed cementitious materials using optical image scanning and X-ray computed tomographycitations
- 2021Characterization of air-void systems in 3D printed cementitious materials using optical image scanning and X-ray computed tomographycitations
- 2020X-Ray Micro Tomography of Water Absorption by Superabsorbent Polymers in Mortarcitations
- 2020Fundamental investigation on the frost resistance of mortar with microencapsulated phase change materialscitations
- 2020Fundamental investigation on the frost resistance of mortar with microencapsulated phase change materialscitations
- 2019Re-curing of calcium aluminate cements post contact with molten slag
- 2019Frost Damage Progression Studied Through X-Ray tomography In Mortar With Phase Change Materials
- 2019Frost Damage Progression Studied Through X-Ray tomography In Mortar With Phase Change Materials
- 2018Mechanical properties of ductile cementitious composites incorporating microencapsulated phase change materialscitations
- 2017Development of ductile cementitious composites incorporating microencapsulated phase change materialscitations
- 2017Development of ductile cementitious composites incorporating microencapsulated phase change materialscitations
- 2017Dealing with uncertainty in material characterization of concrete by education
- 2015Semi- and full quantitative EDS microanalysis of chlorine in reinforced mortars subjected to chloride ingress and carbonation
Places of action
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article
Characterization of air-void systems in 3D printed cementitious materials using optical image scanning and X-ray computed tomography
Abstract
For many 3D printed cementitious materials, air voids may play a dominant role in the interlayer bond strength. However, to date, far too little attention has been paid to reveal the air void characteristics in 3D printed cementitious materials. Therefore, to fill this gap, this study attempts to provide an example of systematically characterizing the typical air void system of 3D printed cementitious materials via different image acquisition and analysis techniques. Two printable limestone and calcined clay-based mixtures were employed to prepare the printed samples. The micrographs were acquired by using optical image scanning and X-ray computed tomography. Afterwards, air void metrics in printed cementitious materials were determined, i.e., content, distribution, size, and shape. The results revealed that most of the air voids with the diameter in the range of 10–1000 μm were distributed evenly in the layer region of printed samples. Large air voids (1000–6000 μm) were enclosed mainly between the printed filaments (interface region), which resulted in the relatively higher local porosity than that of layer region. Additionally, the majority of air voids displayed irregular and elongated shapes, which could be attributed to the extrusion and layer-wise manufacturing processes in 3D printing. Finally, a comparison between optical image scanning and X-ray computed tomography was given.