Consolidating Lime Mortar with Nanolime : The Effect of the Ethanol:Water Ratio / Eva Busschots in Studies in conservation, Vol.70 N°5-6(2025; July-August) (2025-07-01)  

Public ISBD [article]  inStudies in conservation > Vol.70 N°5-6(2025; July-August) (2025-07-01) . - P. 358-366 Titre : Consolidating Lime Mortar with Nanolime : The Effect of the Ethanol:Water Ratio Type de document : texte imprimé Auteurs : Eva Busschots (19..-....), Auteur ; [Et al.], Auteur Année de publication : 2025 Article en page(s) : P. 358-366 Note générale : Fig. Langues : Anglais (eng) Catégories : Alcool Matériaux -- Conservation et restauration -- Recherche -- 21e siècle Nanociment -- Essais Peinture et décoration murales -- Conservation et restauration Résistance des matériaux Solvants -- Essais Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : ABSTRACT Over the last twenty years, more research has been conducted on the application of nanolime as a consolidant. However, a limitation in consolidation with nanolime is the back-migration of the product to the absorption surface during the drying phase, resulting in insufficient product deposition in depth. In this paper, a solvent composition is adapted to the substrate properties to examine the theory that a nanolime with low kinetic stability should be applied to prevent back-migration to the absorption surface for a substrate with large pore size. The common solvent composition of 100% ethanol has a kinetic stability considered too high. Nanolime dispersions (CaLoSiL® E 20 g/L) with different ethanol:water (100:0, 95:5, 90:10, 80:20) ratios were tested on lime mortar samples. The treated samples were subjected to several test methods to evaluate the effectiveness of the consolidation treatment. After comparing the results, the theoretical propositions were substantiated: a back-migration was noticeable in samples treated with the nanolime containing 100% ethanol, while no back-migration was observed in the other solvent compositions. Samples treated with a nanolime dispersion with the addition of 10% deionised water showed promising results regarding mechanical strength, product deposition over the entire depth profile of the sample, and porosity properties. En ligne : https://www.tandfonline.com/doi/full/10.1080/00393630.2024.2390271?scroll=top&ne [...] [article] Consolidating Lime Mortar with Nanolime : The Effect of the Ethanol:Water Ratio [texte imprimé] / Eva Busschots (19..-....), Auteur ; [Et al.], Auteur . - 2025 . - P. 358-366. Fig. Langues : Anglais (eng) in Studies in conservation > Vol.70 N°5-6(2025; July-August) (2025-07-01) . - P. 358-366 Catégories : Alcool Matériaux -- Conservation et restauration -- Recherche -- 21e siècle Nanociment -- Essais Peinture et décoration murales -- Conservation et restauration Résistance des matériaux Solvants -- Essais Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : ABSTRACT Over the last twenty years, more research has been conducted on the application of nanolime as a consolidant. However, a limitation in consolidation with nanolime is the back-migration of the product to the absorption surface during the drying phase, resulting in insufficient product deposition in depth. In this paper, a solvent composition is adapted to the substrate properties to examine the theory that a nanolime with low kinetic stability should be applied to prevent back-migration to the absorption surface for a substrate with large pore size. The common solvent composition of 100% ethanol has a kinetic stability considered too high. Nanolime dispersions (CaLoSiL® E 20 g/L) with different ethanol:water (100:0, 95:5, 90:10, 80:20) ratios were tested on lime mortar samples. The treated samples were subjected to several test methods to evaluate the effectiveness of the consolidation treatment. After comparing the results, the theoretical propositions were substantiated: a back-migration was noticeable in samples treated with the nanolime containing 100% ethanol, while no back-migration was observed in the other solvent compositions. Samples treated with a nanolime dispersion with the addition of 10% deionised water showed promising results regarding mechanical strength, product deposition over the entire depth profile of the sample, and porosity properties. En ligne : https://www.tandfonline.com/doi/full/10.1080/00393630.2024.2390271?scroll=top&ne [...]

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