Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F14%3A43898733" target="_blank" >RIV/60461373:22310/14:43898733 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant

Popis výsledku v původním jazyce

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 consolida

Název v anglickém jazyce

Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant

Popis výsledku anglicky

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 consolida

Druh

O - Ostatní výsledky

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

Projekt

<a href="/cs/project/DF11P01OVV012" target="_blank" >DF11P01OVV012: Nové materiály a technologie pro konzervaci materiálů památkových objektů a preventivní památkovou péči</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů