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National Repository of Grey Literature 23 records found  beginprevious21 - 23  jump to record: Search took 0.00 seconds. 
The development of composites based on inorganic binders designed for the extreme applications
 Janoušek, Petr ; Šácha, Libor (referee) ; Dufka, Amos (advisor)
The topic of this master's thesis is the development of composite materials based on inorganic binders for use in extreme conditions. It means especially geopolymeric or alkali activated materials (AAM) based composites. The theoretical part of this thesis summarizes knowledges about the development and use of alkali-activated materials, their structure and mechanisms of their formation. It also deals with the applicable raw materials for AAM and their exciters, which are in particular water glass and sodium hydroxide. There also have been a summary of the effects of high temperatures and chemicals on the mechanical properties of AAM and the requirements of standard EN 1504-3 for repairing materials. The task of the practical part was to develop a repair mortar for concrete structures based on AAM so that its production was as simple as possible, ie one-component materials. Gradually six recipes have been develeoped. Test specimens made from these recipes have been putted to selected tests according to the requirements of ČSN EN 1504-3.
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Composite materials based on alcali activated blast furnace slag with admixture of fly ash
 Indra, Ivo ; Brandštetr, Jiří (referee) ; Opravil, Tomáš (advisor)
This thesis concerns on substitution of blast furnace slag or its part with fly ash in alkali-activated systems based on aluminosilikates. Classic, fluid bottom and fluid filter fly ashes will be tested. The goal is to prepare geopolymer with required mechanical properties, but with maximal admixture of alternative raw materials. In composites with substitutioned slag or its part the thesis focuses mainly on workabilityof fresh mixture, pressure and bending strenght. Use of secondary raw materials has advantages in the economic point of view and it´s friendly to enviroment, too.
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The usage and applications of the secondary energy products to roads
 Ištvánková, Veronika ; Hýzl,, Petr (referee) ; Stehlík, Dušan (advisor)
This thesis deals with monitoring the production of electric power and consequent formation and properties of the secondary energy products, their usage and applications to roads. The practical part of this thesis is focused on laboratory testing of several samples of the secondary energy products and evaluation of problematic properties – in particular the sensitivity to water and related volume changes.
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National Repository of Grey Literature : 23 records found   beginprevious21 - 23  jump to record:
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