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The use of mineralogical indicators for the assessment of firing temperature in fired-clay bodies

SYSNO ASEP	0491220
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	The use of mineralogical indicators for the assessment of firing temperature in fired-clay bodies
Author(s)	Viani, Alberto (UTAM-F)_{RID, ORCID, SAI} Cultrone, G. (ES) Sotiriadis, Konstantinos (UTAM-F)_{RID, ORCID, SAI} Ševčík, Radek (UTAM-F)_{RID, SAI, ORCID} Šašek, Petr (UTAM-F)_{RID, ORCID, SAI}
Number of authors	5
Source Title	Applied Clay Science. - : Elsevier - ISSN 0169-1317 Roč. 163, October (2018), s. 108-118
Number of pages	11 s.
Publication form	Print - P
Language	eng - English
Country	NL - Netherlands
Keywords	fired-clay bricks ; X-ray diffraction analysis ; Rietveld method ; firing temperature ; amorphous fraction
Subject RIV	JH - Ceramics, Fire-Resistant Materials and Glass
OECD category	Ceramics
R&D Projects	LO1219 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
UT WOS	000442067900012
EID SCOPUS	85050126671
DOI	10.1016/j.clay.2018.07.020
Annotation	Fired-clay bricks are frequently object of conservative actions aimed at the preservation of cultural heritage. Information on firing conditions is relevant for the production of custom made replacement bricks, since, as a widely accepted principle, they should be close match to the pre-existing ones. In this work, the mineralogical and microstructural evolution of fired-clay bodies is described using a combination of analytical techniques, and an approach for the assessment of firing temperature using calibration curves built from the results of X-ray powder diffraction quantitative phase analysis with the Rietveld method, is presented. The weight fractions of hematite, mullite and the amorphous fraction, from two raw clays fired in the laboratory at different temperatures, have been used to assess the firing temperature of two industrially produced bricks. The values derived applying these three methods were in good agreement with the nominal temperatures of the industrial cycles. This approach might be of interest for the assessment of the firing conditions of a broader range of historical/archaeological fired-clay materials.
Workplace	Institute of Theoretical and Applied Mechanics
Contact	Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285
Year of Publishing	2019
Electronic address	https://doi.org/10.1016/j.clay.2018.07.020

Number of the records: 1