| 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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Trtik, Pavel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Chloride-induced corrosion of steel in concrete—insights from bimodal neutron and X-ray microtomography combined with ex-situ microscopycitations
- 2024Chloride-induced corrosion of steel in concrete—insights from bimodal neutron and X-ray microtomography combined with ex-situ microscopycitations
- 2024Reusable Cell Design for High-Temperature (600°C) Liquid Metal Battery Cyclingcitations
- 20234D nanoimaging of early age cement hydrationcitations
- 2023Using neutron tomography to study the internal curing by superabsorbent polymers in cementitious materials
- 20224D Early Age Cement Hydration Analysis by Ptychographic X-ray Computed Tomography and Machine Learning Segmentation
- 2022Influence of 3D printed vascular networks in self-healing cementitious materials on water absorption studied via neutron imaging
- 2021Quantitative analysis of cementitious materials by X-ray ptychographic nanotomography
- 2021Quantitative analysis of cementitious materials by X-ray ptychographic nanotomography
- 2021Resolving Gas Bubbles Ascending in Liquid Metal from Low-SNR Neutron Radiography Imagescitations
- 2021Mapping Spatial Distribution of Pores in an Additively Manufactured Gold Alloy Using Neutron Microtomographycitations
- 2020Investigation of the 3D hydrogen distribution in zirconium alloys by means of neutron tomographycitations
- 2020Characterization of oriented microstructures through anisotropic small-angle scattering by 2D neutron dark-field imagingcitations
- 2019Neutron Imaging With Li-Glass Based Multicore SCIntillating FIber (SCIFI)citations
- 2019Quantitative disentanglement of nanocrystalline phases in cement pastes by synchrotron ptychographic X-ray tomographycitations
- 2019Quantitative disentanglement of nanocrystalline phases in cement pastes by synchrotron ptychographic X-ray tomography
- 2018H2 PERMEATION BEHAVIOR OF Cr2AlC AND Ti2AlC MAX PHASE COATED ZIRCALOY-4 BY NEUTRON RADIOGRAPHYcitations
- 2018H2 PERMEATION BEHAVIOR OF Cr2AlC AND Ti2AlC MAX PHASE COATED ZIRCALOY-4 BY NEUTRON RADIOGRAPHYcitations
- 2018H₂ permeation behavior of Cr₂AlC and Ti₂AlC max phase coated zircaloy-4 by neutron radiography
- 2017Coupling between creep and redox behavior in nickel - yttria stabilized zirconia observed in-situ by monochromatic neutron imagingcitations
- 2017Coupling between creep and redox behavior in nickel - yttria stabilized zirconia observed in-situ by monochromatic neutron imagingcitations
- 2016Using neutron radiography to assess water absorption in air entrained mortarcitations
- 2013Density mapping of hardened cement paste using ptychographic X-ray computed tomographycitations
- 2011Spatiotemporal computed tomography of dynamic processescitations
- 2009A critical examination of statistical nanoindentation on model materials and hardened cement pastes based on virtual experimentscitations
- 2004Micro-mechanical properties of cement paste measured by depth-sensing nanoindentationcitations
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article
Quantitative disentanglement of nanocrystalline phases in cement pastes by synchrotron ptychographic X-ray tomography
Abstract
<jats:p>Mortars and concretes are ubiquitous materials with very complex hierarchical microstructures. To fully understand their main properties and to decrease their CO<jats:sub>2</jats:sub> footprint, a sound description of their spatially resolved mineralogy is necessary. Developing this knowledge is very challenging as about half of the volume of hydrated cement is a nanocrystalline component, calcium silicate hydrate (C-S-H) gel. Furthermore, other poorly crystalline phases (<jats:italic>e.g.</jats:italic> iron siliceous hydrogarnet or silica oxide) may coexist, which are even more difficult to characterize. Traditional spatially resolved techniques such as electron microscopy involve complex sample preparation steps that often lead to artefacts (<jats:italic>e.g.</jats:italic> dehydration and microstructural changes). Here, synchrotron ptychographic tomography has been used to obtain spatially resolved information on three unaltered representative samples: neat Portland paste, Portland–calcite and Portland–fly-ash blend pastes with a spatial resolution below 100 nm in samples with a volume of up to 5 × 10<jats:sup>4</jats:sup> µm<jats:sup>3</jats:sup>. For the neat Portland paste, the ptychotomographic study gave densities of 2.11 and 2.52 g cm<jats:sup>−3</jats:sup> and a content of 41.1 and 6.4 vol% for nanocrystalline C-S-H gel and poorly crystalline iron siliceous hydrogarnet, respectively. Furthermore, the spatially resolved volumetric mass-density information has allowed characterization of inner-product and outer-product C-S-H gels. The average density of the inner-product C-S-H is smaller than that of the outer product and its variability is larger. Full characterization of the pastes, including segmentation of the different components, is reported and the contents are compared with the results obtained by thermodynamic modelling.</jats:p>