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Statements

Subject Item
n2:RIV%2F60461373%3A22310%2F14%3A43898733%21RIV15-MK0-22310___
rdf:type
n11:Vysledek skos:Concept
dcterms:description
Although alkoxysilanes are the most frequently used consolidants, they crack after some time. Thus, they lose the ability to consolidate the stone monuments permanently. In our previous work, it was suggested that, under laboratory conditions, alkoxysilane consolidant modified with 10 wt. % SiO2 nanoparticles of 60 - 70 nm and consolidant modified with 5 wt. % SiO2 nanoparticles of 200-300 nm cracked less than the unmodified alkoxysilane consolidant. However, the consolidants have to work equally well under non-ideal conditions of outdoor environment. To get closer to outdoor conditions, several samples of modified consolidant and samples of an unmodified control were left at various relative humidity levels at 20°C and monitored during several weeks. After this time, all consolidants were compared with each other to set the influence of different relative humidity levels on cracking. By this comparison, we can suggest under which conditions it is possible to use the modified consolidant and whether it can better preserve the stone monuments outdoors. Although alkoxysilanes are the most frequently used consolidants, they crack after some time. Thus, they lose the ability to consolidate the stone monuments permanently. In our previous work, it was suggested that, under laboratory conditions, alkoxysilane consolidant modified with 10 wt. % SiO2 nanoparticles of 60 - 70 nm and consolidant modified with 5 wt. % SiO2 nanoparticles of 200-300 nm cracked less than the unmodified alkoxysilane consolidant. However, the consolidants have to work equally well under non-ideal conditions of outdoor environment. To get closer to outdoor conditions, several samples of modified consolidant and samples of an unmodified control were left at various relative humidity levels at 20°C and monitored during several weeks. After this time, all consolidants were compared with each other to set the influence of different relative humidity levels on cracking. By this comparison, we can suggest under which conditions it is possible to use the modified consolidant and whether it can better preserve the stone monuments outdoors.
dcterms:title
Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant
skos:prefLabel
Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant
skos:notation
RIV/60461373:22310/14:43898733!RIV15-MK0-22310___
n5:aktivita
n13:P
n5:aktivity
P(DF11P01OVV012)
n5:dodaniDat
n9:2015
n5:domaciTvurceVysledku
n12:7861206 n12:3867900 n12:7214146 n12:3507637
n5:druhVysledku
n10:O
n5:duvernostUdaju
n14:S
n5:entitaPredkladatele
n7:predkladatel
n5:idSjednocenehoVysledku
20592
n5:idVysledku
RIV/60461373:22310/14:43898733
n5:jazykVysledku
n17:eng
n5:klicovaSlova
nanoparticles; modification; , relative humidity; consolidant; Alkoxysilane
n5:klicoveSlovo
n6:modification n6:consolidant n6:%20 n6:relative%20humidity n6:Alkoxysilane n6:nanoparticles
n5:kontrolniKodProRIV
[D8A50B8E7563]
n5:obor
n8:CD
n5:pocetDomacichTvurcuVysledku
4
n5:pocetTvurcuVysledku
4
n5:projekt
n15:DF11P01OVV012
n5:rokUplatneniVysledku
n9:2014
n5:tvurceVysledku
Kotlík, Petr Benetková, Barbora Peterová, Adéla Slavíková, Monika
n16:organizacniJednotka
22310