| 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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Huinink, Hp Henk
Eindhoven University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2023Polymeric stabilization of salt hydrates for thermochemical energy storagecitations
- 2022Impact of polymeric stabilisers on the reaction kinetics of SrBr2citations
- 2021Encapsulation of salt hydrates by polymer coatings for low-temperature heat storage applicationscitations
- 2020Stabilization of K2CO3 in vermiculite for thermochemical energy storagecitations
- 2020Core-Shell Encapsulation of Salt Hydrates into Mesoporous Silica Shells for Thermochemical Energy Storagecitations
- 2017Transport of a water-soluble polymer during drying of a model porous mediacitations
- 2017Transport of a water-soluble polymer during drying of a model porous media
- 2013NMR study of the microstructures and water-polymer interactions in cross-linked polyurethane coatingscitations
- 2013NMR study of the microstructures and water-polymer interactions in cross-linked polyurethane coatingscitations
- 2013Water permeability of pigmented waterborne coatingscitations
- 2013Water permeability of pigmented waterborne coatingscitations
- 2012Quantitative water uptake study in thin nylon-6 films with NMR imagingcitations
- 2006Influence of catalyst type on the curing process and network structure of alkyd coatingscitations
- 2006Influence of catalyst type on the curing process and network structure of alkyd coatingscitations
- 2006Mass transfer and gelation in sandstone cores of a novel water shut off chemicalcitations
- 2001Pore size distribution from hydrogen and sodium NMR using the transverse relaxationcitations
- 2001Surface-induced transitions in thin films of asymmetric diblock copolymerscitations
Places of action
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document
Pore size distribution from hydrogen and sodium NMR using the transverse relaxation
Abstract
Salts in porous building materials can crystallize during drying, which may occur at the surface, causing defacing, or just under the surface, where it may cause structural damages, e.g., delamination, surface chipping or disintegration. Therefore a detailed knowledge of the moisture and salt transport is essential for understanding the durability of building materials. Up to now only a few studies have been reported on unsaturated moisture and ion transport in porous media, because suitable measurements techniques are lacking. About the issues which still have to be studied experimentally and theoretically are: chemical and physical interaction of ions with a material, supersaturation of ions in a pore system and the growth of crystals in pores [1]. For these studies it is important to know the ion distribution within the pore system. Up to now usually only the transverse relaxation of hydrogen is used to determine the pore water distribution [2]. In this study the transverse relaxation of sodium as measured at 4.7 T was used to determine the distribution of the sodium ions in a saline solution in various porous materials. First the transverse relaxation of hydrogen and sodium were compared for Nucleosil samples of different pores sizes. These measurements show clearly that also the transverse relaxation of the sodium can be linked to the pore size. The upper limit is set by the bulk relaxation of sodium. These measurements were also done for materials having a bimodal pore size distribution like mortar and calcium silicate brick. Also in these cases the sodium measurements give a clear bimodal distribution.