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The determination of material characteristics of natural and artificial stone samples from Marian Column at Hradčany Square in Prague
Slížková, Zuzana ; Zeman, Antonín ; Petráňová, Veronika ; Viani, Alberto ; Pérez-Estébanez, Marta ; Frankeová, Dita ; Ševčík, Radek ; Mácová, Petra ; Janotová, Dana ; Hasníková, Hana ; Niedoba, Krzysztof ; Hauková, Petra
Within the survey before restoration intervention material properties of natural and artificial stones that are part of the Marian Column at Hradcany Square in Prague were determined. 15 samples were subjected to extensive instrumental analysis, whose output is not only chemical and mineralogical composition of the samples, but also the degree of degradation including a description of the porous system and the level of salinity.
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A survey of the mortuary in Ostrovec at Velečín
Slížková, Zuzana ; Frankeová, Dita ; Petráňová, Veronika ; Zeman, Antonín ; Hauková, Petra ; Mácová, Petra ; Niedoba, Krzysztof ; Viani, Alberto ; Pérez-Estébanez, Marta ; Zíma, Pavel ; Janotová, Dana
This report presents the results of a survey of the mortuary object in Ostrovec by Velečín which has been selected for testing the samples of plaster developed in the project MK NAKI DF11P01OVV008 (High-performance and compatible lime mortars for extreme application in restoration, repair and preventive maintenance of architectural heritage). The survey focuses on the plinth of the morgue, where the plaster repeatedly freezes and falls off after one winter season. Causes of failure of the repairs plasters and material composition of were examined by following techniques:x-ray diffraction (XRD), thermal analysis (TG), optic and electron microscopy, FTIR and Raman spectroscopy.
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Analysis of mortar used for grouting of enclosure wall of St. Wenceslas church in Chlum near Třebíč
Slížková, Zuzana ; Drdácký, Miloš ; Hauková, Petra ; Frankeová, Dita ; Janotová, Dana ; Niedoba, Krzysztof ; Zeman, Antonín
Investor of building (Roman Catholic parish) asked ITAM AV ČR, v.v.i. for an analysis of wall mortar of the St. Wenceslas church in Chlum. The reason for this investigation carried out was the fact that the mortar applied to the wall in 2010 shows after winter disturbances, which reflected a lack of cohesion and adhesion of mortar to the substrate. The mortar is crumbling in many places, sometimes its fragments fall off. The investor asked for an analysis of the composition of applied mortar and the assessment of the suitability of materials for the construction.
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