Jan Válek
Biographic Data
| ID | 1884529 |
|---|---|
| NAME | Jan Válek |
| GIVEN NAMES | Jan |
| FAMILY NAME | Válek |
| SIGNATURE | VÁLEK J |
| AFFILIATIONS | Czech Academy of Sciences, Institute of Theoretical and Applied Mechanics |
| ORCID | 0000-0002-9044-9738 |
| VERIFIED | Yes |
| TOTAL WORKS | 12 |
| TOTAL CITATIONS | 7 |
| AUTHOR COUNT | 12 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2018 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 1 |
New perspectives on the use of FTIR for studying the relative proportions of anthropogenic and geogenic calcium carbonate: The application of peak height and area ratios
Multidisciplinary Study of Lime and Gypsum Plasters from the Paphian Region – Comprehensive Dataset
The present dataset is the result of a research project concerning plaster production in southwestern Cyprus (Paphos region) over an extensive period of time, spanning from the Late Bronze to the Roman age. This dataset includes results obtained from a multi-analytical approach to material analysis, including methods such as petrography, scanning electron microscopy, thermogravimetry, x-ray diffractometry, Raman and infra-red spectroscopy, and pr…
Chronology of the construction phases of St. Peter and Paul Rotunda at Budeč based on characterization and radiocarbon analysis of mortars
This work aims to clarify the absolute chronology of the construction phases of the St. Peter and Paul Rotunda at Budeč, focusing on the erection of the rotunda and the tower. Fifteen mortar samples were taken from various structural parts, two of which also contained remnants of charcoal. The mortar samples were mechanically treated to extract a purified calcitic binder that was dated by radiocarbon analysis. The effectiveness of the sample pret…
Waterproof, hydraulic or natural hydraulic? – Characterization of a set of historic mortars from Paphos (Cyprus)
Plasters and mortars from the theatre in Nea Paphos (Cyprus): A multidisciplinary study
The study of plasters and mortars constitutes a relevant tool in reconstructing the technological knowledge of the workforces at play. Through a multidisciplinary and multiscale approach, this project characterizes selected samples from the Hellenistic-Roman theatre in Nea Paphos (Cyprus), highlighting the characteristics of the raw materials, the productive processes, and the functional properties. Petrographic analysis combined with x-ray diffr…
Extensive Survey on Radiocarbon Dating of Organic Inclusions in Medieval Mortars in the Czech Republic
Dating organic inclusions in mortars such as charcoals is a useful alternative or complementary method to dating mortars themselves, helping to estimate the building age. To assess the limitations of this dating approach, organic inclusions were searched for in surface mortar layers of six early to late medieval buildings in the Czech Republic with relatively well-known age. Altogether, 123 samples were found. About 80% were successfully radiocar…
Assessment of Residual Geogenic Carbon in Mortars Concerning Radiocarbon Dating
Quicklime samples were collected from six vertical layers (L1–L6) of a feedstock calcined in a traditional single-batch wood-fired kiln and assessed. Three samples were well-burned and three under-burned. The quicklime was slaked in an excess of water and the presence of unburned particles was investigated after settling it into putty. The putty was assessed as bulk and also at three depth levels. Thermal analysis determined the CO 2 residua in t…
Radiocarbon Dating of Mortar Charcoals From Medieval Rýzmburk Castle, Northwestern Bohemia
Rýzmburk Castle is one of the largest and most important medieval castles in Bohemia, documented since 1250 AD. Its North tower is assumed to be built in 1260–1300 AD. To test this assumption, the surface layers of mortar were inspected for the presence of charcoals suitable for radiocarbon dating, and 10 charcoals were found. The charcoals probably originated from wood used for lime burning. The results of radiocarbon dating using accelerator ma…
Methods of moisture measurement in historical masonry with examples of use on archaeological sites under the 3rd courtyard of Prague Castle
Degradace zdiva historicky cennĂ ̋ch staveb je Ä asto vĂĄzĂĄna na pĹ Ătomnost vlhkosti, kterĂĄ mĂĄ vliv na solnĂŠ, mrazovĂŠ a biogennĂ zvÄ trĂĄvĂĄnĂ Ä i na bobtnĂĄnĂ jĂlovĂ ̋ch minerĂĄlĹŻ. Ä lĂĄnek pĹ ibliĹžuje vyuĹžitĂ metod (odporovĂŠ, elektromagnetickĂŠ, tepelnĂ ̋ch pulzĹŻ, vyuĹžĂvajĂcĂ reaktivnĂ barvivo, infraÄ ervenĂŠ termografie nebo tenzometrie) k monitoringu pĹ Ătomnosti vody ve stavebnĂch konstrukcĂch s dĹŻrazem na jejich vy…
Characterization of the stucco decoration by Baldassarre Fontana in the Gallery of the Angels at Uherčice Castle (Cz)
This paper investigates of the materials and techniques, used by Baldassarre Fontana and his workshop, to create the stuccoes of the Gallery of the Angels at Uherčice Castle (CZ) dated between 1692 and 1696, when the artist was at the height of his career. So far, the stucco decoration has mainly been studied considering stylistic features, and very little data is available on composition and material analysis. Currently, extensive restoration wo…
Study of Materials and Technique of Late Baroque Stucco Decorations: Baldassarre Fontana from Ticino to Czechia
From the 16th to the 18th century, many artists and craftspeople coming from villages in the Italian-speaking part of Switzerland, well known for its stucco tradition, worked actively in Central Europe. Baldassarre Fontana (Chiasso 1661–1733) was one of them; after a period in Rome, he was active in Moravia and Poland. This contribution presents an analytical insight into stucco works in the Ticino canton and Czech lands in order to provide an un…
Study of nitrate contaminated samples from a historic building with the hygroscopic moisture content method: Contribution of laboratory data to interpret results practical significance
Extensive Survey on Radiocarbon Dating of Organic Inclusions in Medieval Mortars in the Czech Republic
Dating organic inclusions in mortars such as charcoals is a useful alternative or complementary method to dating mortars themselves, helping to estimate the building age. To assess the limitations of this dating approach, organic inclusions were searched for in surface mortar layers of six early to late medieval buildings in the Czech Republic with relatively well-known age. Altogether, 123 samples were found. About 80% were successfully radiocar…
Plasters and mortars from the theatre in Nea Paphos (Cyprus): A multidisciplinary study
The study of plasters and mortars constitutes a relevant tool in reconstructing the technological knowledge of the workforces at play. Through a multidisciplinary and multiscale approach, this project characterizes selected samples from the Hellenistic-Roman theatre in Nea Paphos (Cyprus), highlighting the characteristics of the raw materials, the productive processes, and the functional properties. Petrographic analysis combined with x-ray diffr…
Assessment of Residual Geogenic Carbon in Mortars Concerning Radiocarbon Dating
Quicklime samples were collected from six vertical layers (L1–L6) of a feedstock calcined in a traditional single-batch wood-fired kiln and assessed. Three samples were well-burned and three under-burned. The quicklime was slaked in an excess of water and the presence of unburned particles was investigated after settling it into putty. The putty was assessed as bulk and also at three depth levels. Thermal analysis determined the CO 2 residua in t…
Radiocarbon Dating of Mortar Charcoals From Medieval Rýzmburk Castle, Northwestern Bohemia
Rýzmburk Castle is one of the largest and most important medieval castles in Bohemia, documented since 1250 AD. Its North tower is assumed to be built in 1260–1300 AD. To test this assumption, the surface layers of mortar were inspected for the presence of charcoals suitable for radiocarbon dating, and 10 charcoals were found. The charcoals probably originated from wood used for lime burning. The results of radiocarbon dating using accelerator ma…
Study of nitrate contaminated samples from a historic building with the hygroscopic moisture content method: Contribution of laboratory data to interpret results practical significance
Study of nitrate contaminated samples from a historic building with the hygroscopic moisture content method: Contribution of laboratory data to interpret results practical significance
Study of Materials and Technique of Late Baroque Stucco Decorations: Baldassarre Fontana from Ticino to Czechia
From the 16th to the 18th century, many artists and craftspeople coming from villages in the Italian-speaking part of Switzerland, well known for its stucco tradition, worked actively in Central Europe. Baldassarre Fontana (Chiasso 1661–1733) was one of them; after a period in Rome, he was active in Moravia and Poland. This contribution presents an analytical insight into stucco works in the Ticino canton and Czech lands in order to provide an un…
Methods of moisture measurement in historical masonry with examples of use on archaeological sites under the 3rd courtyard of Prague Castle
Degradace zdiva historicky cennĂ ̋ch staveb je Ä asto vĂĄzĂĄna na pĹ Ătomnost vlhkosti, kterĂĄ mĂĄ vliv na solnĂŠ, mrazovĂŠ a biogennĂ zvÄ trĂĄvĂĄnĂ Ä i na bobtnĂĄnĂ jĂlovĂ ̋ch minerĂĄlĹŻ. Ä lĂĄnek pĹ ibliĹžuje vyuĹžitĂ metod (odporovĂŠ, elektromagnetickĂŠ, tepelnĂ ̋ch pulzĹŻ, vyuĹžĂvajĂcĂ reaktivnĂ barvivo, infraÄ ervenĂŠ termografie nebo tenzometrie) k monitoringu pĹ Ătomnosti vody ve stavebnĂch konstrukcĂch s dĹŻrazem na jejich vy…
Characterization of the stucco decoration by Baldassarre Fontana in the Gallery of the Angels at Uherčice Castle (Cz)
This paper investigates of the materials and techniques, used by Baldassarre Fontana and his workshop, to create the stuccoes of the Gallery of the Angels at Uherčice Castle (CZ) dated between 1692 and 1696, when the artist was at the height of his career. So far, the stucco decoration has mainly been studied considering stylistic features, and very little data is available on composition and material analysis. Currently, extensive restoration wo…
Radiocarbon Dating of Mortar Charcoals From Medieval Rýzmburk Castle, Northwestern Bohemia
Rýzmburk Castle is one of the largest and most important medieval castles in Bohemia, documented since 1250 AD. Its North tower is assumed to be built in 1260–1300 AD. To test this assumption, the surface layers of mortar were inspected for the presence of charcoals suitable for radiocarbon dating, and 10 charcoals were found. The charcoals probably originated from wood used for lime burning. The results of radiocarbon dating using accelerator ma…
Plasters and mortars from the theatre in Nea Paphos (Cyprus): A multidisciplinary study
The study of plasters and mortars constitutes a relevant tool in reconstructing the technological knowledge of the workforces at play. Through a multidisciplinary and multiscale approach, this project characterizes selected samples from the Hellenistic-Roman theatre in Nea Paphos (Cyprus), highlighting the characteristics of the raw materials, the productive processes, and the functional properties. Petrographic analysis combined with x-ray diffr…
Extensive Survey on Radiocarbon Dating of Organic Inclusions in Medieval Mortars in the Czech Republic
Dating organic inclusions in mortars such as charcoals is a useful alternative or complementary method to dating mortars themselves, helping to estimate the building age. To assess the limitations of this dating approach, organic inclusions were searched for in surface mortar layers of six early to late medieval buildings in the Czech Republic with relatively well-known age. Altogether, 123 samples were found. About 80% were successfully radiocar…
Assessment of Residual Geogenic Carbon in Mortars Concerning Radiocarbon Dating
Quicklime samples were collected from six vertical layers (L1–L6) of a feedstock calcined in a traditional single-batch wood-fired kiln and assessed. Three samples were well-burned and three under-burned. The quicklime was slaked in an excess of water and the presence of unburned particles was investigated after settling it into putty. The putty was assessed as bulk and also at three depth levels. Thermal analysis determined the CO 2 residua in t…
Waterproof, hydraulic or natural hydraulic? – Characterization of a set of historic mortars from Paphos (Cyprus)
New perspectives on the use of FTIR for studying the relative proportions of anthropogenic and geogenic calcium carbonate: The application of peak height and area ratios
Multidisciplinary Study of Lime and Gypsum Plasters from the Paphian Region – Comprehensive Dataset
The present dataset is the result of a research project concerning plaster production in southwestern Cyprus (Paphos region) over an extensive period of time, spanning from the Late Bronze to the Roman age. This dataset includes results obtained from a multi-analytical approach to material analysis, including methods such as petrography, scanning electron microscopy, thermogravimetry, x-ray diffractometry, Raman and infra-red spectroscopy, and pr…
Chronology of the construction phases of St. Peter and Paul Rotunda at Budeč based on characterization and radiocarbon analysis of mortars
This work aims to clarify the absolute chronology of the construction phases of the St. Peter and Paul Rotunda at Budeč, focusing on the erection of the rotunda and the tower. Fifteen mortar samples were taken from various structural parts, two of which also contained remnants of charcoal. The mortar samples were mechanically treated to extract a purified calcitic binder that was dated by radiocarbon analysis. The effectiveness of the sample pret…
Building materials and conservation (9 works) · Cultural Heritage Materials Analysis (8 works) · Archaeology (7 works) · Mortar (7 works) · Conservation Techniques and Studies (6 works) · Geography (5 works) · Geology (5 works) · Materials Science (5 works) · Archaeology and ancient environmental studies (4 works) · Engineering (4 works)