| 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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Lubelli, Barbara
Delft University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024On the necessity of new hydrophobic treatment after repointing of water repellent masonrycitations
- 2024Capsule controlled release of crystallisation inhibitors in mortarscitations
- 2024Encapsulated crystallisation inhibitor as a long-term solution to mitigate salt damage in hydraulic mortarscitations
- 2023Tunable chitosan-alginate capsules for a controlled release of crystallisation inhibitors in mortarscitations
- 2023Experimental Study on Properties of Hydraulic Mortars with Mixed in Crystallisation Inhibitors
- 2023Leaching behaviour of a crystallisation inhibitor in mortarscitations
- 2023A study on leaching of crystallisation inhibitor in mortars
- 2023Factors favouring vegetation in quay masonry walls: A pilot field study
- 2022Effect of a mixed-in crystallization inhibitor on the properties of hydraulic mortarscitations
- 2021Effect Of Alkali Ferrocyanides On Crystallisation Of Sodium Chloride
- 2019Characterization and compatibility assessment of commercial stone repair mortars
- 2016Effect of solvent on nanolime transport within limestonecitations
Places of action
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article
Effect of solvent on nanolime transport within limestone
Abstract
Consolidation treatment is a common practice in the field of conservation. However, when considering calcareous materials, there is a lack of efficient and durable consolidants. Colloidal dispersions of Ca(OH)2 nanoparticles, commonly known as nanolimes, can effectively recover the superficial loss of cohesion. However, they do not always guarantee in-depth mass consolidation.<br/>The aim of this paper is to give directions for improving in-depth deposition of nanolime dispersions when applied on limestone. A conceptual model, correlating the drying rate and the kinetic stability of nanolimes dispersed in different solvents, to the porosity of the limestone to be treated, is conceived.<br/>This model can help to select a suitable nanolime solvent depending on the substrate.<br/>Nanolimes were synthetized and dispersed in different solvents (ethanol, isopropanol, butanol and water). The morphology and size of the lime nanoparticles were studied by dynamic light scattering (DLS) and scanning electron microscopy (SEM-EDS). The kinetic stability of the nanolime was assessed by Uv–vis spectroscopy. The porosity of the limestones were determined by mercury intrusion porosimetry (MIP), measuring as well their moisture transport properties.<br/>The model was validated by applying the different nanolimes to two limestones with very coarse (Maastricht limestone) and very fine porosity (Migné limestone). The absorption and drying kinetics and the deposition of the nanolimes within the treated limestones were investigated by phenolphthalein test, optical microscopy and SEM-EDS analysis.<br/>The results show that, as suggested by the model, less stable dispersions (as obtained by higher boiling point solvents e.g. butanol) are more suitable for coarse-pore limestones, while for fine limestones, more stable nanolime dispersions (as obtained by low boiling point solvents e.g. ethanol) should be preferred.<br/>Suggestions are given for further improvement and fine tuning of the nanolimes.