About: Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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 (en)
Title	Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion (en)
skos:prefLabel	Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion (en)
skos:notation	RIV/60461373:22310/09:00021601!RIV10-MSM-22310___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA103/07/1082), P(GP103/08/P608), Z(MSM6046137302)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Kloužková, Alexandra Hanykýř, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Fakulta chemické technologie
http://linked.open...dnocenehoVysledku	310590
http://linked.open...ai/riv/idVysledku	RIV/60461373:22310/09:00021601
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	porous ceramics; roof tiles; irreversible moisture expansion; rehydroxylation (en)
http://linked.open.../riv/klicoveSlovo	rehydroxylation irreversible moisture expansion porous ceramics roof tiles
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[018EC1354234]
http://linked.open...i/riv/nazevZdroje	Ceramics-Silikáty
http://linked.open...in/vavai/riv/obor	JH
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Moisture expansion of porous ceramic materials Fracture parameters of building ceramics
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	53
http://linked.open...iv/tvurceVysledku	Kloužková, Alexandra Vokáč, Miroslav Bouška, Petr Hanykýř, Vladimír
http://linked.open...ain/vavai/riv/wos	000273176700012
http://linked.open...n/vavai/riv/zamer	Preparation and research of functional materials and material technologies using micro- and nanoscopic methods
issn	0862-5468
number of pages	4 (xsd:int)
http://localhost/t...ganizacniJednotka	22310
is http://linked.open...avai/riv/vysledek of	Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion Dilatometric Analysis of Ceramic Roof Tiles for Determining Irreversible Moisture Expansion

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