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Chemical and microstructural characterization of the concrete sampled from the bridge Most Legií, Prague
Frankeová, Dita; Jurkovská, Lucie
2019 - Czech
Analysis of historical concrete samples using thermal analysis and microscopic examination by scanning electron microscope and SEM-EDS analysis. Determination of degree of concrete degradation and identification of chemical corrosion products. Rozbor vzorků historického betonu s použitím termické analýzy a mikroskopického vyšetření s využitím skenovacího elektronového mikroskopu a SEM‐EDS analýzy. Určení stupně degradace betonu a identifikace produktů chemické koroze.
Keywords:
TGA; SEM/EDS; binder characterization; concrete degradation
Available at various institutes of the ASCR
Chemical and microstructural characterization of the concrete sampled from the bridge Most Legií, Prague
Analysis of historical concrete samples using thermal analysis and microscopic examination by scanning electron microscope and SEM-EDS analysis. Determination of degree of concrete degradation and ...
Survey of the floor in the winter garden of the residence of the ambassador to the US
Válek, Jan; Skružná, Olga; Kozlovcev, Petr
2019 - Czech
On May 7, 2019, a survey was carried out in the winter garden of the Otto Petschek Villa, the\nresidence of the Ambassador to the USA. The aim was to clarify the distribution of metal reinforcements\nand other structural elements in the floor of the room. The survey was carried out in\ncooperation with the designer Ing. Zdeněk Rieger. Dne 7. 5. 2019 byl realizován průzkum zimní zahrady ve vile Otto Petschka, residenci velvyslance\nUSA. Cílem bylo objasnit rozložení kovových výztuží a dalších konstrukčních prvků v podlaze místnosti.\nPrůzkum byl proveden ve spolupráci s projektantem Ing. Zdeňkem Riegerem.
Keywords:
ground penetrating radar (GPR); location of reinforcements; radargrams
Available at various institutes of the ASCR
Survey of the floor in the winter garden of the residence of the ambassador to the US
On May 7, 2019, a survey was carried out in the winter garden of the Otto Petschek Villa, the\nresidence of the Ambassador to the USA. The aim was to clarify the distribution of metal ...
Measuring the effectiveness of hydrophobizing product Nanofusion on wood – beech and oak
Machová, Dita; Zárybnická, Lucie; Majtás, Dušan
2019 - Czech
Verification of protective properties and usability of NF Protect Wood for the needs of preservation effectiveness. Moisture, vapour permeability, wettability, water absorption, colour stability were evaluated and a test in climatic chamber was performed. Ověření ochranných vlastností a použitelnosti pro potřeby památkové péče nátěrového prostředku NF Protect WOOD. Byla hodnocena navlhavost, paropropustnost, smáčivost, nasákavost, barvostálost a byla provedena klimatická degradační zkouška.
Keywords:
wood; hydrophobization; moisture; vapor permeability; wettability; water absorption; colour stability; climatic chamber
Available at various institutes of the ASCR
Measuring the effectiveness of hydrophobizing product Nanofusion on wood – beech and oak
Verification of protective properties and usability of NF Protect Wood for the needs of preservation effectiveness. Moisture, vapour permeability, wettability, water absorption, colour stability were ...
Research report. Experimental study of effects of various consolidants on mechanical characteristics of historic lime render
Slížková, Zuzana
2019 - Czech
The chemical-physical properties of the historical lime render to be restored were tested and then the tests of consolidation effects using liquid consolidants based on ethyl silicate and nano-calcium dispersion were performed. The highest strengthening effect was achieved by double treatment of the render with product Remmers KSE 300 (based on ethyl silicate). Due to the required hydrophilic properties of the render after consolidation, the final treatment of the render with a nanolime suspension, eg CaLosil IP 15 or CaLoSiL E 25, was recommended. Byly zjištěny chemicko-fyzikální vlastnosti historické vápenné omítky vyžadující zpevnění a provedeny zkoušky zpevnění ethylsilikátem a nanovápennou disperzí. Nejvyššího zpevnění bylo dosaženo dvojnásobným ošetřením omítky prostředkem na bázi ethylsilikátu s koncentrací SiO2 300 g/l. Z důvodu požadovaných hydrofilních vlastností omítky bylo doporučeno finální ošetření omítky nanovápenným prostředkem, např. CaLosil IP 15 nebo CaLoSiL E 25.
Keywords:
historic lime mortar; consolidation; historic render; strengthening, ethylsilicate; nanolime suspension
Available in a digital repository NRGL
Research report. Experimental study of effects of various consolidants on mechanical characteristics of historic lime render
The chemical-physical properties of the historical lime render to be restored were tested and then the tests of consolidation effects using liquid consolidants based on ethyl silicate and nano-calcium ...
Monitoring the movement of the cemetery church Vsech svatych in Kutna Hora - Sedlec
Zíma, Pavel; Drdácký, Miloš
2019 - Czech
The cemetery church Vsech svatych above the ossuary in Kutna Hora Sedlec is a part of a cultural monument of world importance. In view of the planned and later realized archaeological and construction activities in its immediate vicinity, there was a requirement to monitor in long-term its movements, especially the tilt of the towers and the entire building. The deformations of the floors in the ossuary signalized the possibility of the instability of the church's foundation and the danger of the appearance and development of faults in its masonry structures. Hřbitovní kostel Všech svatých nad kostnicí v Kutné Hoře Sedlci je součástí kulturní památky světového významu. Vzhledem k plánovaným a posléze i realizovaným archeologickým i stavebním aktivitám v jeho blízkém okolí vznikl požadavek sledovat\ndlouhodobě jeho pohyby, zejména náklon věží i celé budovy. Deformace podlah v kostnici signalizovaly možnost nestability založení kostela a nebezpečí vzniku a rozvoje poruch jeho zděných konstrukcí.
Keywords:
Kutna Hora Sedlec; long-term monitoring; deformation
Available at various institutes of the ASCR
Monitoring the movement of the cemetery church Vsech svatych in Kutna Hora - Sedlec
The cemetery church Vsech svatych above the ossuary in Kutna Hora Sedlec is a part of a cultural monument of world importance. In view of the planned and later realized archaeological and construction ...
Chemical and microstructural characterization of the mortars sampled from the Church of St. Jakub, Kutná Hora
Frankeová, Dita; Jurkovská, Lucie
2019 - Czech
Analysis of historical mortar samples using scanning electron microscopy and SEM-EDS analysis. Characterization of filler and mortar binder components. Rozbor vzorků historických malt s použitím mikroskopického vyšetření s využitím skenovacího elektronového mikroskopu a SEM‐EDS analýzy. Charakterizace plniva a složek pojiva malt.
Keywords:
TGA; SEM/EDS; binder characterization
Available at various institutes of the ASCR
Chemical and microstructural characterization of the mortars sampled from the Church of St. Jakub, Kutná Hora
Analysis of historical mortar samples using scanning electron microscopy and SEM-EDS analysis. Characterization of filler and mortar binder components.
Analyses of baroque gypsum based plasters in the Czech Republic – mineralogy and microstructure
Slížková, Zuzana; Mácová, Petra; Frankeová, Dita; Koudelková, Veronika; Jurkovská, Lucie
2019 - Czech
Set of ancient gypsum based plasters imitating marble stone in the Czech baroque churches and palaces was analysed for the purpose of the research and restoration of historic plasters. Raman spectrometry was used for identification pigments in gypsum plasters and SEM-EDX analysis for studying microstructure and chemical composition of plasters. Soubor deseti vzorků sádrových umělých mramorů odebraných z barokních kostelů a paláců v ČR byl analyzován Ramanovou spektrometrií pro určení obsažených pigmentů a analýzou SEM-EDX pro studium mikrostruktury a chemického složení materiálu. Zpráva obsahuje take výsledky termické analýzy materiálů.
Keywords:
gypsum; plaster; artificial marble; Raman spectrometry; SEM-EDX analysis; thermal analysis; pigment
Available at various institutes of the ASCR
Analyses of baroque gypsum based plasters in the Czech Republic – mineralogy and microstructure
Set of ancient gypsum based plasters imitating marble stone in the Czech baroque churches and palaces was analysed for the purpose of the research and restoration of historic plasters. Raman ...
Microscopical investigation of fasade render material sampled from 19th century building in Prague 2
Slížková, Zuzana; Jurkovská, Lucie
2019 - Czech
Microscopical analyses of render´surface layers using optical microscopy and SEM-EDS. Statigraphy and elemental composition of the two newer surface layers applied on the core and stucco layers of the original rendering. The building was built in 1888 and reconstructed in 1996. Rozbor povrchové úpravy omítky pomocí optické mikroskopie a SEM-EDS. Prvkové složení dvou novějších krycích vrstev na jádrové a štukové vrstvě původní omítky.
Keywords:
renders; microstructure; SEM-EDS
Available at various institutes of the ASCR
Microscopical investigation of fasade render material sampled from 19th century building in Prague 2
Microscopical analyses of render´surface layers using optical microscopy and SEM-EDS. Statigraphy and elemental composition of the two newer surface layers applied on the core and stucco layers of ...
Chemical and mineralogical analyses of plaster samples from State Castle Bečov
Slížková, Zuzana; Koudelková, Veronika; Kozlovcev, Petr; Šterner, Adam
2018 - Czech
Using chemical and microscopic analysis, it was determined that the analyzed sample of bedding mortar from the 13th century (Czech castle Bečov) is the air lime mortar with the quartz and silicate sand enriched by some content of slag grains. The internal plaster from the same building period of the castle was made using the lime-earthen mortar with predominantly silicate sand. The plaster contained an admixture of wood or plant particles, sawdust has been identified.\n\n Pomocí chemické a mikroskopické analýzy bylo určeno, že analyzovaný vzorek malty z 13. stol. je vápenná malta s převážně křemenným a silikátovým pískem a vnitřní omítka z 13. stol. byla provedena z malty vápenohliněné s převážně silikátovým plnivem. Omítka obsahuje příměs dřevěných či rostlinných částic, byly identifikovány piliny. Malta obsahuje kousky strusky.
Keywords:
chemical composition; survey; material characterization; binder; aggregate; historic plaster; historic render
Available at various institutes of the ASCR
Chemical and mineralogical analyses of plaster samples from State Castle Bečov
Using chemical and microscopic analysis, it was determined that the analyzed sample of bedding mortar from the 13th century (Czech castle Bečov) is the air lime mortar with the quartz and silicate ...
Characterization of historical renders and plasters sampled from the Castle Freudenstein (also called Slikuv Castle), tower „Slikovka“, Ostroh nad Jachymovem (Zamecký vrsek u Jachymova)
Slížková, Zuzana; Frankeová, Dita; Koudelková, Veronika
2018 - Czech
SEM and SEM-EDS analyses was used for determination of renders and plasters microstructure and components Vzorky vnějších a vnitřních omítek byly zkoumány za účelem zjištění jejich struktury a chemického složení pomocí metod SEM a SEM-EDS
Keywords:
render; plaster; slag; cement; SEM-EDS analysis
Available at various institutes of the ASCR
Characterization of historical renders and plasters sampled from the Castle Freudenstein (also called Slikuv Castle), tower „Slikovka“, Ostroh nad Jachymovem (Zamecký vrsek u Jachymova)
SEM and SEM-EDS analyses was used for determination of renders and plasters microstructure and components
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