Keeping up appearances / Julia Karasa in EUROPEAN COATINGS JOURNAL (ECJ), N° 4 (04/2022)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4 (04/2022) . - p. 30-33 Titre : Keeping up appearances : A green, zero-VOC, clay-based additive reduces the growth of algae, thereby thwarting coating degradation Type de document : texte imprimé Auteurs : Julia Karasa, Auteur ; Solvita Kostjukova, Auteur ; Juris Kostjukovs, Auteur ; Davids Stebelis, Auteur Année de publication : 2022 Article en page(s) : p. 30-33 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Algues Argile Caractérisation Essais (technologie) Revêtements -- Additifs Revêtements antisalissures Revêtements en bâtiment Index. décimale : 667.9 Revêtements et enduits Résumé : Historical buildings and stone monuments are affected by various processes that impair the aesthetics and reduce their lifespan and reliability. Microbial populations present in a stone substratum are usually the result of successive colonisation by different micro-organisms over the course of several years. It is a process that relies upon the capacity of a substratum to provide a protective niche on which micro-organisms can develop. Note de contenu : - Rising demand for biocides - Tackling algal growth - Preparation and characterisation of the clay-based additive - Field tests - No algal growth - Lab tests - Dosage confirmation - Table 1 : Preparation of testing surfaces, dosage of clay-based additive En ligne : https://drive.google.com/file/d/1hRqW3iXOgeCtq1YW0oI4Di-oDIaBqy_T/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37470 [article]

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Natural iron oxide (earth colour) deposits in Latvia : an assessment of the possibilities for their use in inorganic pigment manufacturing / Aigards Kokins in COLORATION TECHNOLOGY, Vol. 134, N° 6 (12/2018)  

[article]  inCOLORATION TECHNOLOGY > Vol. 134, N° 6 (12/2018) . - p. 491-500 Titre : Natural iron oxide (earth colour) deposits in Latvia : an assessment of the possibilities for their use in inorganic pigment manufacturing Type de document : texte imprimé Auteurs : Aigards Kokins, Auteur ; Juris Kostjukovs, Auteur ; Liga Zarina, Auteur Année de publication : 2018 Article en page(s) : p. 491-500 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Oxyde de fer Pigments inorganiques -- Analyse Pigments métalliques Index. décimale : 667.2 Colorants et pigments Résumé : In Latvia, iron oxide pigments for paints, stains and coatings are all imported, although the land is rich in sources of iron (earth colour). The aim of this study was to evaluate earth colour deposits in Latvia and to assess the possibilities for their use in natural earth pigment manufacturing. The study included tests of colour pigments available in the Latvian market, as well as evaluation of samples from earth colour deposits in Lunkeči and Kazuleja in Latvia, to determine their quality, chemical composition, and physical characteristics. The research continued with tests of production technology for inorganic pigment manufacturing (enrichment, processing, etc.). The study results showed that the quality of the pigments obtained does not differ significantly from the supply available in the market, pointing to the potential use of natural iron oxide deposits in Latvia for inorganic pigment manufacturing. Note de contenu : - Natural iron oxides ( earth colour) - The history of natural earth pigments - The iron oxide trade in Latvia - Iron oxide deposits in Latvia - Geospatial characteristics of th earth colour deposits studied - Materials and methods - Discussion of the test results DOI : 10.1111/cote.12367 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12367 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31383 [article]

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