Název: Signs of degradation of czech art nouveau mosaic glasses
Autoři: Rohanová, D. ; Švarcová, Silvie ; Hájek, T.
Typ dokumentu: Příspěvky z konference
Konference/Akce: Interdisciplinary Conference of ALMA /4./, Praha (CZ), 2012-11-21 / 2012-11-23
Rok: 2012
Jazyk: eng
Abstrakt: Analyses of Art Nouveau mosaics from the church of St. Simon and Juda in Dolín near Slaný and from Holovousy, both most likely made by the workshop of Viktor Foerster, have shown that the author used the NaO-PbO-SiO 22 glass type and that he used the same glass also for restoration of The Last Judgment mosaic at the Prague Castle in 1890-1910. Despite the fact that lead glasses are more durable than potassium glasses, the material investigations identified corrosion processes on the surface of the glass pieces (tesserae) depending on their composition. Apart from the analyzed mosaic NaO-PbO-SiO2 glasses, we also used ancient sodium glasses (NaO-CaO-SiO2) and 22 potassium glasses (K2O-CaO-SiO2) from archaeological finds in Opava to demonstrate their different chemical durability. We also paid attention to fixation binders used in Art Nouveau mosaics. Inappropriate use of gypsum-containing binders is a significant cause of disintegration of the mosaics. Gypsum and gypsum-lime plasters are very sensitive to humidity. Capillary action of water is a very serious problem that endangers the overall lifespan of any mosaic.
Klíčová slova: Art Nouveau; glass corrosion; glass mosaic; lead glass; tesserae; Victor Foerster
Zdrojový dokument: ACTA ARTIS ACADEMICA 2012: KNOWLEDGE AND EXPERIENCE IN THE FINE ART, ISBN 978-80-87108-33-8

Instituce: Ústav anorganické chemie AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0219079

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-151607


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav anorganické chemie
Konferenční materiály > Příspěvky z konference