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Mineralogical composition of silica brick.
Pospíšil, Dušan ; Kotouček, Miroslav (referee) ; Nevřivová, Lenka (advisor)
This Bachelor´s thesis deals with the mineralogical composition of dense silica bricks. Silica bricks is a siliceous refraktory material that contains up to 99% of silicon dioxide, which is used mainly for the construktion of coke oven batteries, glass furnaces and heaters of blast-furnace wind. The main emphasis in case of silica bricks is put on the content of crystalline phases, which are the residual untransform quartz, tridymite, cristobalit and glass phase. These stages affect the resulting properties of dinas substantially. The main goal of this Bachelor´s thesis is to evaluate the impact of firing on the mineralogical composition of silica bricks and to its dilation at elevated temperatures.
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Influence of transmission method on the results of measurement of refractory blocks by ultrasonic pulse method
Pospíšil, Dušan ; Dufka, Amos (referee) ; Brožovský, Jiří (advisor)
Ultrasonic pulse method is a non-destructive method, which is used in the construction industry to evaluate individual parameters of building structures. The aim of the thesis was to create the prerequisites for determining the rate of ultrasonic pulse propagation on refractory silica fittings and quartz glass fittings. Selected factors influencing the speed of ultrasonic pulse propagation in the tested samples were studied, namely the influence of the sounding direction, the influence of the natural frequency of the probes and the influence of the acoustic coupling material on the ultrasonic pulse method.
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Influence of transmission method on the results of measurement of refractory blocks by ultrasonic pulse method
Pospíšil, Dušan ; Dufka, Amos (referee) ; Brožovský, Jiří (advisor)
Ultrasonic pulse method is a non-destructive method, which is used in the construction industry to evaluate individual parameters of building structures. The aim of the thesis was to create the prerequisites for determining the rate of ultrasonic pulse propagation on refractory silica fittings and quartz glass fittings. Selected factors influencing the speed of ultrasonic pulse propagation in the tested samples were studied, namely the influence of the sounding direction, the influence of the natural frequency of the probes and the influence of the acoustic coupling material on the ultrasonic pulse method.
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Mineralogical composition of silica brick.
Pospíšil, Dušan ; Kotouček, Miroslav (referee) ; Nevřivová, Lenka (advisor)
This Bachelor´s thesis deals with the mineralogical composition of dense silica bricks. Silica bricks is a siliceous refraktory material that contains up to 99% of silicon dioxide, which is used mainly for the construktion of coke oven batteries, glass furnaces and heaters of blast-furnace wind. The main emphasis in case of silica bricks is put on the content of crystalline phases, which are the residual untransform quartz, tridymite, cristobalit and glass phase. These stages affect the resulting properties of dinas substantially. The main goal of this Bachelor´s thesis is to evaluate the impact of firing on the mineralogical composition of silica bricks and to its dilation at elevated temperatures.
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Živelní pojištění
Pospíšil, Dušan ; Bílková, Diana (advisor) ; Novotný, Milan (referee)
Tato diplomová práce je zaměřená na pojistně matematické výpočty z oblasti neživotního pojištění a aplikaci těchto postupů na reálná data. Nedílnou součástí mé diplomové práce je tvorba rezerv metodou Chain-ladder a porovnání s metodou Bornhuetter-Fergusonovou a metodou škodního poměru. Další významnou částí jsou výpočty zaměřené na modely počtu pojistných nároků a modely výše škod. Podkladem pro tyto a další statistické a pojistně matematické analýzy jsou reálná data týkající se pojištění majetku občanů a k nim vztahující se pojistná plnění způsobená živelními událostmi.
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