ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 61, (4) 309 - 318 (2017)

Kloužková Alexandra 1, Kavanová Mária 1, Kohoutková Martina 2, Dvořáková Pavla 1, Zemenová Petra 1, Tryml Michal 3
Department of Glass and Ceramics, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
2 Central laboratories, University of Chemistry and Technology Prague, Technická 5, Prague, 166 28, Czech Republic
3 National Heritage Institute, Na Perštýně 12, 110 00 Prague, Czech Republic

Keywords: Terracotta tiles, Microstructure, X-ray techniques, Thermal analysis, Dating, Rehydroxylation

The fragments of Romanesque relief terracotta tiles were found during archaeological research in Prague, Czech Republic. The finding represents a part of the floor in the Early Romanesque rotunda. The aim of this work was to evaluate microstructure and ageing process and to consider possibility of the preparation of these tiles by using local raw materials. Thermal analysis was used to characterize fine fractions of samples. Chemical and mineralogical composition of tiles and surface decoration were compared and discussed. The application of rehydroxylation (RHX) dating method was studied. It was proved, that the differences in the ceramic body phase composition of the tiles were caused by variable firing temperatures. The results indicate that tiles were imported and not produced from local raw materials.

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doi: 10.13168/cs.2017.0030
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