Characterization of mortar in medieval rural paintings in Slovenia

• Autores: Anabelle Kriznar, Antonio Ruiz-Conde, Pedro J. Sánchez Soto
• Localización: IX Congreso Internacional de Rehabilitación del Patrimonio Arquitectónico y Edificación: (9. 2008. Sevilla), Vol. 1, 2008, ISBN 978846123459z, págs. 69-74
• Idioma: inglés
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• Resumen

  • The territory that today belongs to Slovenia is very rich in medieval mural painting. An international interdisciplinary research of different mural cycles was dedicated, among other things, to the analysis of mortars that served as the support for the paintings. Thirty-eight churches were selected all over the country and ranging a period between late 13th and late 15th centuries. All cycles were first precisely studied in situ and second, selected tiny samples of mortars were taken and analysed by OM, SEM-EDX, XRD and some of them also by FTIR. The results revealed that most Slovene medieval mortars were made of lime and sand, as common procedure in that time. In few cases the high quality mortar made of lime and crushed marble or limerock was found. Organic fibers were detected only in mortars of mural paintings that belong to one particular master whose work is centered in the north-east territory. Mortars were mostly put on the wall in one layer, rarely in two or three. They followed the day�s work, giornatta, the borders of which can still be seen by naked eye in several localities. Where the mortar layer is very thin, it had to be freshened up with lime-wash before painting on it.