Coatings applied on damp building substrates : performance and influence on moisture transport / Vânia Brito in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 4 (07/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 4 (07/2011) . - p. 513-525 Titre : Coatings applied on damp building substrates : performance and influence on moisture transport Type de document : texte imprimé Auteurs : Vânia Brito, Auteur ; Teresa Diaz Gonçalves, Auteur ; Paulina Faria, Auteur Année de publication : 2011 Article en page(s) : p. 513-525 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Revêtements en bâtiment Tags : 'Système  peinture'  'Bâtiment  ancien'  'Substrat  humide'  Séchage  'Transport  humidité' Index. décimale : 667.9 Revêtements et enduits Résumé : Dampness is a common condition in old buildings and, accordingly, many paint systems specific for this type of building allow for application on walls with nonnegligible moisture content. In spite of that, performance evaluation of these paints is normally carried out using dry substrates or even on free paint films. This article presents research performed on 16 commercial paint systems: seven silicate, three silicone, three hydro-pliolite and two lime-based systems, as well as one common vinyl emulsion paint that served as reference. Each paint was applied and cured both on dry and on damp mortar substrates. The test specimens were subjected to water vapor permeability tests and evaporative drying tests. The following conclusions could be drawn: (i) the way paint systems influence the drying of the substrate, to which they were applied and where they cured, may vary significantly depending on the moisture content of that substrate; (ii) vapor permeability, measured with specimens applied and cured on dry substrate, may be an acceptable way of predicting a paint's influence on drying, provided that the paints are applied and cured on dry substrate or that their characteristics are not significantly affected by the moisture content of that substrate. Note de contenu : MATERIALS : Paint systems - Substrate material METHODS : Preparation of the test specimens - Water vapor permeability tests Drying tests DISCUSSION : Effect of the moistening condition of the substrate - Comparison between the performance of the different paint systems - Correlation between vapor permeability and drying index DOI : 10.1007/s11998-010-9319-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9319-5.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12145 [article]

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Evaluating the effectiveness of self-cleaning products applied on external thermal insulation composite systems (ETICS) / Ana Sofia Silva in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 5 (09/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 5 (09/2022) . - p. 1437-1448 Titre : Evaluating the effectiveness of self-cleaning products applied on external thermal insulation composite systems (ETICS) Type de document : texte imprimé Auteurs : Ana Sofia Silva, Auteur ; Giovanni Borsoi, Auteur ; João Luís Parracha, Auteur ; Inês Flores-Colen, Auteur ; Rosario Veiga, Auteur ; Paulina Faria, Auteur ; Amélia Dionísio, Auteur Année de publication : 2022 Article en page(s) : p. 1437-1448 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Applications extérieures Dioxyde de titane Isolation thermique Nanoparticules Photocatalyse Revêtement auto-nettoyant:Peinture auto-nettoyante Revêtements -- Additifs:Peinture -- Additifs Revêtements protecteurs Tests d'efficacité Index. décimale : 667.9 Revêtements et enduits Résumé : External thermal insulation composite systems (ETICS) have been extensively applied on building façades with the aim of implementing the thermal and aesthetical properties of the building envelope. However, the formation of stains and deposition of particulate matter is often observed in the surface of these systems. The use of multifunctional products with self-cleaning properties can reduce surface anomalies and thus enhance the durability of ETICS. This study aims at evaluating the effectiveness of three protective coatings with self-cleaning additives (i.e., TiO2 nanoparticles), when applied on the surface of ETICS. Three different stains (rhodamine, methylene blue and silver paint aerosol) were applied on the ETICS finishing coat, evaluating the removal of these stains after exposure to natural (solar radiation) light source. The surface properties (compactness, hardness, roughness, gloss, and color) of the ETICS were evaluated prior and after sun exposure. Results showed that the application of the three products lead to a modification of the surface properties (compactness, hardness, gloss, roughness) of the ETICS specimens, and sensibly enhance the self-cleaning, hydrophobic and aesthetical properties of the ETICS. Note de contenu : - MATERIALS AND METHODS : ETICS specimens - Protective coatings - Application protocol - Surface properties - Morphological and microstructural characterization - Self-cleaning test - RESULTS : Surface properties - Morphological and microstructural analysis - Self-cleaning test - Table 1 : Physical features and amount of product used in the application of the protective coatings - Table 2 : Mean values and standard deviations of the ultrasonic propagation speed (Sp), surface hardness, surface gloss, surface roughness, and contact angle (θ) of the untreated (P0) and treated (P1, P2, P3) ETICS specimens DOI : https://doi.org/10.1007/s11998-022-00617-x En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00617-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38281 [article]

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