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Research of effective use and activation of activ concrete additions
Mikhailova, Olesia ; Ťažký, Tomáš (referee) ; Hela, Rudolf (advisor)
The theoretical part describes the admixtures that are used in cement replacement. Here also summarizes the findings on the influence of granulomentry, grain shape and fineness of admixtures on the density of the cement matrix. The practical part is experimentally verified the influence of fineness admixtures and grain size on the mechanical properties of concrete. Also, the rheological properties of cement are compared with admixtures depending on the type and dosage and time.
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Late Roman Silver Coinage (from Arcadius and Honorius to the end of the 5th century AD)
Gambacorta, Federico ; Marek, Václav (advisor) ; Kolniková, Eva (referee) ; Militký, Jiří (referee)
This PhD research has furnished the occasion to update the outdated works about Late Roman coinage focusing especially on a topic not so commonly examined like the Late Roman silver coinage. More precisely, it is analysed and discussed some of its more intriguing aspects. First of all how silver, as metal, was considered and perceived in Late Roman society and, therefore, why during fifth century AD silver bullion was used to produce fine silver objects rather than coins. Two different Late Roman customs concerning silver coinage are then reviewed: hoarding, with a list of most recent findings, and clipping. Finally a chapter is dedicated to the metrology and fineness of Late Roman silver coins together with an accurate analysis of the 7 different denominations. This extensive and deep discussion about Late Roman silver coinage's main problematics is completed by the most recent and updated catalogue of all the Late Roman silver denominations known so far. Such a review has given not only the possibility of updating or modifying some of the previous theories but also the opportunity to suggest some new ideas. --------------------------------------- Podrobně jsou zkoumány některé konkrétní zásadsní otázky, především jakým způsobem bylo v pozdně římské společnosti vnímáno stříbro jako kov a proč tedy...
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Late Roman Silver Coinage (from Arcadius and Honorius to the end of the 5th century AD)
Gambacorta, Federico ; Marek, Václav (advisor) ; Kolniková, Eva (referee) ; Militký, Jiří (referee)
This PhD research has furnished the occasion to update the outdated works about Late Roman coinage focusing especially on a topic not so commonly examined like the Late Roman silver coinage. More precisely, it is analysed and discussed some of its more intriguing aspects. First of all how silver, as metal, was considered and perceived in Late Roman society and, therefore, why during fifth century AD silver bullion was used to produce fine silver objects rather than coins. Two different Late Roman customs concerning silver coinage are then reviewed: hoarding, with a list of most recent findings, and clipping. Finally a chapter is dedicated to the metrology and fineness of Late Roman silver coins together with an accurate analysis of the 7 different denominations. This extensive and deep discussion about Late Roman silver coinage's main problematics is completed by the most recent and updated catalogue of all the Late Roman silver denominations known so far. Such a review has given not only the possibility of updating or modifying some of the previous theories but also the opportunity to suggest some new ideas. --------------------------------------- Podrobně jsou zkoumány některé konkrétní zásadsní otázky, především jakým způsobem bylo v pozdně římské společnosti vnímáno stříbro jako kov a proč tedy...
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Research of effective use and activation of activ concrete additions
Mikhailova, Olesia ; Ťažký, Tomáš (referee) ; Hela, Rudolf (advisor)
The theoretical part describes the admixtures that are used in cement replacement. Here also summarizes the findings on the influence of granulomentry, grain shape and fineness of admixtures on the density of the cement matrix. The practical part is experimentally verified the influence of fineness admixtures and grain size on the mechanical properties of concrete. Also, the rheological properties of cement are compared with admixtures depending on the type and dosage and time.
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