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Stress analysis of vaults in the building of the Masaryk´s University Centre in Telč
Bayer, Jan; Drdácký, Miloš
2021 - Czech
The report summarizes the results of local surveys, expert opinions and analysis concerning the vaults in the building of the former Jesuit dormitory in Telč on Zachariáš Square in Hradec no. 2. The investigation was induced by the lack of inputs data for the assessment of the vaults for a new purpose: the establishment of a public library combined with a gallery. The performed FEM calculations estimated the stresses in the vaults of the room 0.22A and do not replace the static calculation, but can serve as an input information for a possible design project. Zpráva shrnuje výsledky z místních šetření, expertních posudků a výpočtů, které se týkají kleneb v objektu bývalé jezuitské koleje v Telči na náměstí Zachariáše z Hradce č.p. 2. Podmětem pro šetření byl nedostatek podkladů pro posouzení zatížitelnost kleneb pro nový účel: zřízení veřejné knihovny kombinované s galerií. Provedené výpočty MKP slouží pro odhad napjatosti klenby v místnosti 0.22Aa nenahrazují statický výpočet, ale mohou sloužit jako podklad pro eventuální zpracování podrobného statického výpočtu.
Keywords:
masonry vaults; ground penetrating radar (GPR); ANSYS; stress analysis; Jesuits dormitory in Telč
Available at various institutes of the ASCR
Stress analysis of vaults in the building of the Masaryk´s University Centre in Telč
The report summarizes the results of local surveys, expert opinions and analysis concerning the vaults in the building of the former Jesuit dormitory in Telč on Zachariáš Square in Hradec no. 2. The ...
Characterization of stone and mortar sampled from Romanesque architectural fragment in archeological site under Prague Castle (CZ)
Slížková, Zuzana; Frankeová, Dita; Bauerová, Pavla; Viani, Alberto; Kozlovcev, Petr; Svoboda, Milan
2021 - Czech
Material characterization of silicite stone and bending earth-lime mortar sampled from the archeological site below the 3rd courtyard of Prague Castle provides data on the chemical and mineralogical composition and microstructure of stone and mortar for the needs of the historic structure conservation. Materiálový rozbor opuky a zdící malty z archeologického terénu pod III. nádvořím Pražského hradu poskytuje údaje o chemickém a mineralogickém složení materiálů a jejich mikrostruktuře pro potřeby konzervace památky.
Keywords:
historic building; material characterization; archeological site; silicite; earth-lime mortar; Mg porozimetry; SEM-EDS analysis
Available at various institutes of the ASCR
Characterization of stone and mortar sampled from Romanesque architectural fragment in archeological site under Prague Castle (CZ)
Material characterization of silicite stone and bending earth-lime mortar sampled from the archeological site below the 3rd courtyard of Prague Castle provides data on the chemical and mineralogical ...
Chemical and microstructural characterization of the artificial stone sample from the sandstone arcade at the Moravský Krumlov Castle
Frankeová, Dita; Koudelková, Veronika; Bauerová, Pavla; Slížková, Zuzana
2021 - Czech
As part of the construction and technical survey, a microscopic analysis of samples of the artificial stone sample was performed using a scanning electron microscope and SEM ‐ EDS analysis. Characterization of mortars' aggregate and binder components was performed, and the binder was identified as portland cement. V rámci stavebně-technického průzkumu byl proveden mikroskopický rozbor vzorku umělého kamene s využitím skenovacího elektronového mikroskopu a SEM‐EDS analýzy. Byla provedena charakterizace plniva a složek pojiva. Analýzy prokázaly, že pojivo umělého kamene je anorganické na bázi portlandského cementu
Keywords:
artificial stone; microscopic characterization; EDS analysis
Available at various institutes of the ASCR
Chemical and microstructural characterization of the artificial stone sample from the sandstone arcade at the Moravský Krumlov Castle
As part of the construction and technical survey, a microscopic analysis of samples of the artificial stone sample was performed using a scanning electron microscope and SEM ‐ EDS analysis. ...
Survey of the constructions hidden under the floor of the castle chapel of All Saints in Telč
Válek, Jan; Skružná, Olga
2021 - Czech
The aim of the non-destructive survey was to determine the presence of building construction hidden under the contemporary floor. The survey confirmed the position of underground crypt and revealed no other structures. Cílem nedestruktivního průzkumu bylo zjistit přítomnost stavebních konstrukcí skrytých pod soudobou podlahou. Průzkum potvrdil polohu krypty a neodhalil žádné další konstrukce.
Keywords:
ground penetrating radar (GPR); non-destructive survey; radargrams; cultural heritage
Available at various institutes of the ASCR
Survey of the constructions hidden under the floor of the castle chapel of All Saints in Telč
The aim of the non-destructive survey was to determine the presence of building construction hidden under the contemporary floor. The survey confirmed the position of underground crypt and revealed no ...
The river dam Slapy - evaluation of material and mechanical properties of the steel quick-closing panels
Šperl, Martin; Gajdoš, Lubomír; Bejdl, Jan
2021 - Czech
An experimental research of the material and mechanical properties of two steel segments cut from quick-closing gate was carried out for suitability assessment to operation. The quick-closing gate is a technology part of the river dam Slapy. Byl uskutečněn experimentální výzkum materiálových a mechanických vlastností dodaných dvou ocelových segmentů vyřezaných z rychlozávěrových vrat VD Slapy pro posouzení způsobilosti k provozu.
Keywords:
steel gate; tensile strength; notch toughness; metallography
Available at various institutes of the ASCR
The river dam Slapy - evaluation of material and mechanical properties of the steel quick-closing panels
An experimental research of the material and mechanical properties of two steel segments cut from quick-closing gate was carried out for suitability assessment to operation. The quick-closing gate is ...
Evaluation of mechanical properties of the steel materials take from the electric transmission towers damaged by tornado
Šperl, Martin; Gajdoš, Lubomír; Bejdl, Jan
2021 - Czech
The report deals with the evaluation of mechanical properties of steels from high voltage masts destroyed by tornado. Práce se zabývá hodnocením mechanických vlastností ocelí stožárů vysokého napětí zničených důsledkem tornáda.
Keywords:
tensile strength; steel; notch toughness; ductility
Available at various institutes of the ASCR
Evaluation of mechanical properties of the steel materials take from the electric transmission towers damaged by tornado
The report deals with the evaluation of mechanical properties of steels from high voltage masts destroyed by tornado.
Survey of salinity of masonry under III. courtyard at Prague Castle
Slížková, Zuzana; Ševčík, Radek; Viani, Alberto; Mácová, Petra
2021 - Czech
Archaeological architectural monuments in the area under III. in the courtyard of Prague Castle were monitored in 2021 in terms of the extent of salt efflorescences and their chemical composition. Salt efflorescence on the marlstone walls of the church of St. Bartholomew contain sodium carbonate and bicarbonate, sodium sulfate and calcium sulfate. Sodium nitrate and potassium nitrate were also present in some samples. The aim of the research is to propose measures to mitigate the effect of salts on the degradation of historic masonry. Archeologické stavební památky v prostoru pod III. nádvořím Pražského hradu byly v roce 2021 monitorovány z hlediska rozsahu výkvětů solí a jejich chemického složení. Výkvěty solí na opukové zdi kostela zvaného sv. Bartoloměj obsahují uhličitan a hydrogenuhličitan sodný, síran sodný a síran vápenatý. Místy byl přítomen též dusičnan sodný a dusičnan draselný. Cílem výzkumu je návrh opatření pro zmírnění účinku solí na degradaci historické zdiva.
Keywords:
salinity of masonry; historical stone masonry; XRD analysis; IEC analysis; archeological terrain; crust; salt efflorescence
Available at various institutes of the ASCR
Survey of salinity of masonry under III. courtyard at Prague Castle
Archaeological architectural monuments in the area under III. in the courtyard of Prague Castle were monitored in 2021 in terms of the extent of salt efflorescences and their chemical composition. ...
Microscopic characterization of mortar samples from Vinohrady Railway Tunnels
Bauerová, Pavla; Frankeová, Dita; Slížková, Zuzana
2021 - Czech
Within the construction-technical survey framework, a microscopic analysis of historical concrete samples was performed using a scanning electron microscope and SEM-EDS analysis. Characterization of mortar components and identification of chemical corrosion products. The results of the survey work were used as a basis for the reconstruction project. V rámci stavebně-technického průzkumu byl proveden mikroskopický rozbor vzorků historického betonu s využitím skenovacího elektronového mikroskopu a SEM‐EDS analýzy. Byla provedena charakterizace plniva a složek pojiva malt a identifikace produktů chemické koroze. Výsledky průzkumných prací byly použity jako podklad pro návrh rekonstrukce objektu.\n
Keywords:
Portland cement; tunnel; degradation
Available at various institutes of the ASCR
Microscopic characterization of mortar samples from Vinohrady Railway Tunnels
Within the construction-technical survey framework, a microscopic analysis of historical concrete samples was performed using a scanning electron microscope and SEM-EDS analysis. Characterization of ...
Methodology of the measuring of projectile velocity degradation in the ballistic resistant materials
Šperl, Martin; Bejdl, Jan; Wolf, Benjamin; Koutný, O.; Kratochvíl, J.; Bystrianska, E.; Křesťan, J.; Bartošková, M.; Holešinský, R.; Drdlová, M.; Šoukal, F.; Pěchouček, P.
2021 - Czech
The methodology report describe a complete methodology for measuring the decrease of projectile speed in ballistic resistant material, incl. description of the required measuring systems. V práci je vypracována kompletní metodika k měření útlumu rychlosti projektilu v balisticky odolném materiálu vč. popisu potřebných měřících zařízení.
Keywords:
ballistic materials; velocity degradation; concrete; high speed measuring
Available at various institutes of the ASCR
Methodology of the measuring of projectile velocity degradation in the ballistic resistant materials
The methodology report describe a complete methodology for measuring the decrease of projectile speed in ballistic resistant material, incl. description of the required measuring systems.
Ceiling plaster in the Church of Master Jan Hus in Česká Lípa. Plaster in the Stauss system
Válek, Jan; Skružná, Olga; Kozlovcev, Petr; Slížková, Zuzana; Frankeová, Dita; Kotková, Kristýna; Viani, Alberto
2021 - Czech
The studied ceiling plasters were sampled the Mistr Jan Hus Church in Česká Lípa. The material consisted of several layers of paint. The aim of this research was to characterize the individual layers of plaster in the Stauss system. Vzorky pochází z omítky stropní konstrukce kostela Mistra Jana Husa v České Lípě. Omítka se skládá z několika vrstev a nátěrů. Cílem průzkumu je charakterizovat vrstvy tvořící základ omítkového souvrství, které bylo použito ve spojení se stropním systém Stauss.
Keywords:
ceiling plaster; material composition; plaster characterization; Stauss system; Mistr Jan Hus Church Česká Lípa
Available at various institutes of the ASCR
Ceiling plaster in the Church of Master Jan Hus in Česká Lípa. Plaster in the Stauss system
The studied ceiling plasters were sampled the Mistr Jan Hus Church in Česká Lípa. The material consisted of several layers of paint. The aim of this research was to characterize the individual layers ...
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