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Statements

Subject Item
n2:RIV%2F60461373%3A22310%2F09%3A00021601%21RIV10-MSM-22310___
rdf:type
n7:Vysledek skos:Concept
dcterms:description
Porous clay ceramic materials are subject to an ageing process which leads to moisture expansion. The irreversible moisture expansion value is determined with the use of time-consuming standard tests that require samples 20 cm in length. An advantage of a method based on dilatometric measurement is that samples 2.5 cm in size can be measured. Using this method, we determined the irreversible moisture expansion values of samples of historical roof tiles of various ages. The procedure analyses the course and the shape of the curves and reveals whether the volume changes result from the moisture expansion process. Rehydrated water is evolved within the interval 150 ? 500 °C. In addition, the correlation between the mineralogical composition and the irreversible expansion value has been studied. Materials containing mullite fired at temperatures above 1000 °C show low values, while samples with high porosity and containing no mullite fired at temperatures below 1000 °C show high values. Material containin Porous clay ceramic materials are subject to an ageing process which leads to moisture expansion. The irreversible moisture expansion value is determined with the use of time-consuming standard tests that require samples 20 cm in length. An advantage of a method based on dilatometric measurement is that samples 2.5 cm in size can be measured. Using this method, we determined the irreversible moisture expansion values of samples of historical roof tiles of various ages. The procedure analyses the course and the shape of the curves and reveals whether the volume changes result from the moisture expansion process. Rehydrated water is evolved within the interval 150 ? 500 °C. In addition, the correlation between the mineralogical composition and the irreversible expansion value has been studied. Materials containing mullite fired at temperatures above 1000 °C show low values, while samples with high porosity and containing no mullite fired at temperatures below 1000 °C show high values. Material containin
dcterms:title
Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion
skos:prefLabel
Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion
skos:notation
RIV/60461373:22310/09:00021601!RIV10-MSM-22310___
n3:aktivita
n8:Z n8:P
n3:aktivity
P(GA103/07/1082), P(GP103/08/P608), Z(MSM6046137302)
n3:cisloPeriodika
4
n3:dodaniDat
n12:2010
n3:domaciTvurceVysledku
n13:3836886 n13:6667864
n3:druhVysledku
n15:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
310590
n3:idVysledku
RIV/60461373:22310/09:00021601
n3:jazykVysledku
n18:eng
n3:klicovaSlova
porous ceramics; roof tiles; irreversible moisture expansion; rehydroxylation
n3:klicoveSlovo
n6:porous%20ceramics n6:roof%20tiles n6:irreversible%20moisture%20expansion n6:rehydroxylation
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[018EC1354234]
n3:nazevZdroje
Ceramics-Silikáty
n3:obor
n17:JH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:projekt
n16:GA103%2F07%2F1082 n16:GP103%2F08%2FP608
n3:rokUplatneniVysledku
n12:2009
n3:svazekPeriodika
53
n3:tvurceVysledku
Bouška, Petr Vokáč, Miroslav Kloužková, Alexandra Hanykýř, Vladimír
n3:wos
000273176700012
n3:zamer
n19:MSM6046137302
s:issn
0862-5468
s:numberOfPages
4
n10:organizacniJednotka
22310