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Preparation and characterization of concretes based on blended geopolymeric binder
Bulejko, Pavel ; Straka, Radek (referee) ; Šoukal, František (advisor)
This bachelor thesis focuses on preparation of concretes based on alkali activated binding systems (geopolymers). Finely ground blast-furnace slag was used as a basic aluminosilicate compound for preparation of an alkali activated binder. A mixture of sodium water glass and 50 % KOH solution, which was replaced by cement kiln dust in some cases, was used as an activator. The prepared testing samples (columns 40x40x160 mm) were mechanically tested for strength and the influence of the substitution of KOH solution by cement kiln dust on strength was observed. Then the work aims at structure analysis of binders prepared – the thermal analysis was carried out and the phase composition was explored with RTG diffraction.
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Study of usabiliti of sands for preparation of aeroconcrete in hydrotermal condition
Straka, Radek ; Ptáček, Petr (referee) ; Opravil, Tomáš (advisor)
A building industry is expanding branch all the time and it intervenes in the life of everyone. Aeroconcrete is very attractive and actual subject nowadays because economy is important point of view of production. This material finds a wide-spread use thanks to its specific properties. The good manipulation and great thermal insulating properties are secured by its porous structure. Furthermore, proper material selection provides a saving of power of house for every customer demands. Due to aeroconcrete's sufficient compressive strength it is useful for both constructions and internal walls. Fundamental and very important for final material properties is raw material composition of aeroconcrete. A relationship between composition of filler (quartz sand) and resultant properties of aeroconcrete is an objective of the thesis.
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Hints for Inorganic Chemistry Tests E-learning Study Materials Processing
Straka, Radek ; Kábelová, Božena (referee) ; Richtera, Lukáš (advisor)
E-learning is an educational way which uses multimedia and communication technologies for making, transferring and offering materials for studying. The aim of this bachelor thesis is making educational materials using the form of hints for inorganic chemistry tests. The first year students come into the contact with these tests compulsorily in the Inorganic chemistry laboratories II on Faculty of chemistry of Brno University of technology. The thesis contains six parts. First five parts are set to general view of e-learning and last sixth part obtains chosen hints for inorganic chemistry tests. Next hints are appended on CD for its considerable size (cca 600 hints).
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Study of usabiliti of sands for preparation of aeroconcrete in hydrotermal condition
Straka, Radek ; Ptáček, Petr (referee) ; Opravil, Tomáš (advisor)
A building industry is expanding branch all the time and it intervenes in the life of everyone. Aeroconcrete is very attractive and actual subject nowadays because economy is important point of view of production. This material finds a wide-spread use thanks to its specific properties. The good manipulation and great thermal insulating properties are secured by its porous structure. Furthermore, proper material selection provides a saving of power of house for every customer demands. Due to aeroconcrete's sufficient compressive strength it is useful for both constructions and internal walls. Fundamental and very important for final material properties is raw material composition of aeroconcrete. A relationship between composition of filler (quartz sand) and resultant properties of aeroconcrete is an objective of the thesis.
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Preparation and characterization of concretes based on blended geopolymeric binder
Bulejko, Pavel ; Straka, Radek (referee) ; Šoukal, František (advisor)
This bachelor thesis focuses on preparation of concretes based on alkali activated binding systems (geopolymers). Finely ground blast-furnace slag was used as a basic aluminosilicate compound for preparation of an alkali activated binder. A mixture of sodium water glass and 50 % KOH solution, which was replaced by cement kiln dust in some cases, was used as an activator. The prepared testing samples (columns 40x40x160 mm) were mechanically tested for strength and the influence of the substitution of KOH solution by cement kiln dust on strength was observed. Then the work aims at structure analysis of binders prepared – the thermal analysis was carried out and the phase composition was explored with RTG diffraction.
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|
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Hints for Inorganic Chemistry Tests E-learning Study Materials Processing
Straka, Radek ; Kábelová, Božena (referee) ; Richtera, Lukáš (advisor)
E-learning is an educational way which uses multimedia and communication technologies for making, transferring and offering materials for studying. The aim of this bachelor thesis is making educational materials using the form of hints for inorganic chemistry tests. The first year students come into the contact with these tests compulsorily in the Inorganic chemistry laboratories II on Faculty of chemistry of Brno University of technology. The thesis contains six parts. First five parts are set to general view of e-learning and last sixth part obtains chosen hints for inorganic chemistry tests. Next hints are appended on CD for its considerable size (cca 600 hints).
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