National Repository of Grey Literature 111 records found  beginprevious68 - 77nextend  jump to record: Search took 0.01 seconds. 
Určení pojiva malty na základě rozboru dodaného vzorku termickou analýzou
Frankeová, Dita ; Slížková, Zuzana
The sample was delivered as the mortar fraction with grain size less than 0.063 microns. The proportion of mortar is generally regarded as a binder. To determine the quality of the binder thermal analysis and X-ray fluorescence were performed and insoluble residue in HCl. was found.
The efficacy assessment of water repellent agent POLYMEMBRAN applied on natural stone and hardened lime mortar
Hasníková, Hana ; Mordanova, Anna ; Drdácký, Miloš ; Slížková, Zuzana
The subject of the study was assess the influence of water repellent agent on the properties of four different natural stones that are frequently used building material in the Czech Republic. Besides color change were primarily assessed changes in the microstructure, which significantly influences the transport of water and water vapour through treated material.
Stratigraphy investigation on balcony doors and window samples from building Celetná 11, Prague 1
Slížková, Zuzana ; Hauková, Petra ; Novák, Vladimír
For the purposes of photo documentation of preserved coatings a microscopic analysis of samples taken at the door and window on northern and eastern facades was performed. Specimens were fixed in epoxy resin (cross section) and examined in an optical microscope.
Material analysis of renders of the St. Andrews´ church in Havlickuv Brod
Slížková, Zuzana ; Frankeová, Dita ; Petráňová, Veronika ; Mácová, Petra ; Zeman, Antonín ; Krejčí, Jan
Three samples of mortars with surface coatings were delivered by restorer. The aim of analysis was the determination of the binder quality and description of the layers´ system (thickness, chemical composition). To determine these characteristics optical and electron microscopy complemented by thermal analysis were performed.
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.
Chemical and mineralogical composition of mortars and plasters from Church of St. Margaret of Antioch in Kopčany
Slížková, Zuzana ; Petráňová, Veronika ; Zeman, Antonín ; Frankeová, Dita ; Hauková, Petra
The aim of work was analysis of the historical mortars from the 9th century. This unique specimens with exceptional durability were provided by restorer during the renovation of the church. Small amounts of samples allowed to perform only the microscopic analysis, which results in the characterization of aggregates and mortar binder. The composition of the mortars is changing as binder shown of aerial, dolomitic and hydraulic lime.
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Plný tet: 0441290_2014_Slizkova_et_al_Chemicke_a_mineralogicke_slozeni_vzorku_zdici_malty_a_omitky_z_kostela_svate_Margity_Antiochijske_v_Kopcanech - Download fulltextPDF
Assessment of the efficiency of various consolidation agents based on the evaluation of changes of material properties of Kutna Hora limestone from Church of St. James in Kutna Hora
Slížková, Zuzana ; Hasníková, Hana
The report describes the procedure of assessment of efficiency of two consolidation agents used on limestone from Church of St. James in Kutná Hora. It includes photographic documentation and all the results with final evaluation and conclusion. Two non-destructive methods were used in-situ on the church – water absorption measurement by microtube and so called peeling test. The locations of the tests are mentioned in the report.
Characterisation of historic materials - the case of Tao-I-Kisra Palace (Iraq)
Slížková, Zuzana ; Pérez-Estébanez, Marta ; Viani, Alberto
The aim of this study is the characterization of bricks from the Taq-I-Kisra palace in southern Iraq (ancient Mesopotamian area). The palace is located in the plain of the Tigri river (see Fig. 1). The construction probably started around year 540 AD even if there is some uncertainty about its age. The arched hall on the facade is about 37 m high and is the largest vault ever constructed at the time (see Fig. 2). Originally conceived as an imperial palace, was later used as a mosque by the Arabs before being gradually abandoned. The historical constructions in this area are what remains of the capital of the empire. In accordance with geological data, in the area where the temple was built (and in general in the Mesopotamian area), the most available construction material was mud. Mud bricks were made mainly of clays. In ancient times there is evidence of mixes with sand, water, mud, and organic material, husks or straw.
Assessment of the efficiency of various consolidation agents based on the evaluation of changes of material properties of plaster from the Imperial Palace in the Karlštejn Castle
Slížková, Zuzana ; Drdácký, Miloš ; Hasníková, Hana ; Frankeová, Dita
The report describes the procedure of assessment of efficiency of four consolidation agents used on plaster from the Imperial Palace in the Karlštejn Castle. It includes photographic documentation and all the results with final evaluation and conclusion. Three non-destructive methods were used in-situ in the Karlštejn Castle – water absorption measurement by Karsten tube, water absorption measurement by microtube and so called peeling test. The locations and way of taking samples are mentioned in the report also. Mechanical tests, (compression test, three point bending test) have been performed on the samples and also bulk density, open porosity and water absorption of treated and untreated material according to ČSN EN 1015-10 have been investigated in laboratories of ITAM AS CR.
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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