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Development of anorthite ceramics
Toman, Boris ; Šveda,, Mikuláš (referee) ; Sokolář, Radomír (advisor)
When firing calcium ceramic materials creates a new crystalline phase anorthite. It can significantly improve the properties of ceramic body. This work deals with the possibilities of development anortitové ceramics using non-plastic raw materials, particularly alumina cement compared with conventional ceramics based on mullite.
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Possibilities of brick clays ageing ability acceleration
Nečasová, Zdislava ; Stančík,, Hynek (referee) ; Sokolář, Radomír (advisor)
This master thesis is focused on comparing the options available to accelerate thematuring period of brick dough. There were four types of brick clay from differentfactories of the Czech Republic. From each of these four earth were created by three tests. One dough was stored in the laboratory, the second was heated in an oven and the third dough was added sulphite liquor. In these tests was studied mainly maturing and then further the effect the swallowed sulphite liquor on other properties (plasticity, sensitivity to drying, drying change of length and flexural strength). The result of job evaluation should be, how much time and how it will reduce the time of maturing.
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Utilization of Waste Aggregate as grogs in the roofing tiles brick body
Vondříčková, Veronika ; Skotal, Zbyněk (referee) ; Sokolář, Radomír (advisor)
Goal of this work is to judge the effect of different amount of waste aggregate in particular material mixture for production of clay roof tile according to norm ČSN EN 1304 (TONDACH Česká republika s r.o. – cihelna Šlapanice). This document is putting together published experience with usage of waste aggregate in the brickworks business. The effect of different mixture amount was tested in laboratories. Tests were most importantly aimed at temperature stress during burn, vacuum absorption method and mass by volume.
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Results of Anorthite Creation in ceramic Body
Beránková, Karla ; Šveda,, Mikuláš (referee) ; Sokolář, Radomír (advisor)
Anorthite is crystalline phase in the ceramic body. Is acquired on burning a mixture of calcium ceramic raw material. This work deals with the influence on the resulting properties of anorthite ceramic body, especially flexural strength, porosity, shrinkage, thermal expansion coefficient. And the influence of different CaO sources on the properties. As a source of CaO was used calcium carbonate, calcium hydroxide and fluid fly ash.
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Bone porcelain based on Calcium Aluminous Cement
Němec, Tomáš ; Nevřivová, Lenka (referee) ; Sokolář, Radomír (advisor)
The Main goal of this bachelor´s thesis is to review qualities of bone china with using of aluminous cement for preparation of porcelain bodies. The theoretical part describes the issue of production of bone china and the use of aluminous cements. Besides that there are shown ways of examining porcelain bodies and description of traditional feldspar porcelain and bone china. In practical part of my thesis I compared final properties and mineralogical composition of the traditional feldspar porcelain, bone china and bone china based on aluminous cement.
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