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dc.contributor.authorTokarský, Jonáš
dc.contributor.authorMartinec, Petr
dc.contributor.authorMamulová Kutláková, Kateřina
dc.contributor.authorOvčačíková, Hana
dc.contributor.authorŠtudentová, Soňa
dc.contributor.authorŠčučka, Jiří
dc.date.accessioned2019-04-11T08:35:15Z
dc.date.available2019-04-11T08:35:15Z
dc.date.issued2019
dc.identifier.citationConstruction and Building Materials. 2019, vol. 199, p. 549-559.cs
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.urihttp://hdl.handle.net/10084/134585
dc.description.abstractPoly(alkyl siloxane) containing photoactive nano-ZnO (0.5 wt%) has been studied as a protective coating of glauconitic sandstone. Effect on visual appearance, hydrophobicity, porosity, water absorption/evaporation, and self-cleaning ability of the sandstone was measured. The results were evaluated in comparison with uncoated and poly(alkyl siloxane)-coated sandstone. Static contact angle of water reached 89 degrees +/- 3 degrees and 128 degrees +/- 2 degrees for poly(alkyl siloxane) and nano-ZnO/poly(alkyl siloxane) coating, respectively. Poly(alkyl siloxane) and nano-ZnO/poly(alkyl siloxane) coatings led to increased reduction in water absorption (>50%) for similar to 18 h and similar to 8 h, respectively, compared to the uncoated sandstone. The shorter time is compensated by self-cleaning ability: photodegradation of methylene blue on the nano-ZnO/poly(alkyl siloxane) coating after 5 h of UV irradiation was observed. This coating is a promising candidate for practical use in sandstone monuments protection.cs
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofseriesConstruction and Building Materialscs
dc.relation.urihttp://doi.org/10.1016/j.conbuildmat.2018.12.045cs
dc.rights© 2018 Elsevier Ltd. All rights reserved.cs
dc.subjectsandstonecs
dc.subjectprotectioncs
dc.subjecthydrophobicitycs
dc.subjectphotoactivitycs
dc.subjectZnOcs
dc.subjectpoly(alkyl siloxane)cs
dc.titlePhotoactive and hydrophobic nano-ZnO/poly(alkyl siloxane) coating for the protection of sandstonecs
dc.typearticlecs
dc.identifier.doi10.1016/j.conbuildmat.2018.12.045
dc.type.statusPeer-reviewedcs
dc.description.sourceWeb of Sciencecs
dc.description.volume199cs
dc.description.lastpage559cs
dc.description.firstpage549cs
dc.identifier.wos000458221600050


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