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Statements

Subject Item
n2:RIV%2F61388980%3A_____%2F12%3A00390201%21RIV13-AV0-61388980
rdf:type
n6:Vysledek skos:Concept
dcterms:description
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. 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.
dcterms:title
Signs of degradation of czech art nouveau mosaic glasses Signs of degradation of czech art nouveau mosaic glasses
skos:prefLabel
Signs of degradation of czech art nouveau mosaic glasses Signs of degradation of czech art nouveau mosaic glasses
skos:notation
RIV/61388980:_____/12:00390201!RIV13-AV0-61388980
n6:predkladatel
n7:ico%3A61388980
n3:aktivita
n11:I
n3:aktivity
I
n3:dodaniDat
n10:2013
n3:domaciTvurceVysledku
n20:4649192
n3:druhVysledku
n8:D
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
167832
n3:idVysledku
RIV/61388980:_____/12:00390201
n3:jazykVysledku
n9:eng
n3:klicovaSlova
glass mosaic; tesserae; glass corrosion; Victor Foerster; lead glass; Art Nouveau
n3:klicoveSlovo
n5:glass%20corrosion n5:tesserae n5:lead%20glass n5:glass%20mosaic n5:Art%20Nouveau n5:Victor%20Foerster
n3:kontrolniKodProRIV
[9EF12C540CC4]
n3:mistoKonaniAkce
Praha
n3:mistoVydani
PRAHA
n3:nazevZdroje
ACTA ARTIS ACADEMICA 2012: KNOWLEDGE AND EXPERIENCE IN THE FINE ART
n3:obor
n4:CA
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n10:2012
n3:tvurceVysledku
Švarcová, Silvie Hájek, T. Rohanová, D.
n3:typAkce
n15:EUR
n3:wos
000313137700013
n3:zahajeniAkce
2012-11-21+01:00
s:numberOfPages
8
n14:hasPublisher
Akademie výtvarných umění v Praze
n19:isbn
978-80-87108-33-8