National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Possibilities of utilization of brick-grind-dust in alternative binding systems based on fluidized ash
Tušla, Václav ; Švec, Jiří (referee) ; Opravil, Tomáš (advisor)
This bachelor´s thesis deals with usage of brick-grind-dust in alternative binding systems based on ashes of fluid combustion. Specifically it deals with fly ashes and softly milled bed ashes of brown coal combustion. Primarily thanks of content of free lime, anhydrite and other components, fluid ashes have binding properities. Brick-grind-dust arise in end formation of burned bricks. The aim of thesis is to verify, possibilities to create composite of appropriate abilities with high or even exclusive amount of fluid ashes and brick-grind-waste. The paper also deals with influence of some chemical modifying additive on this alternative systems.
Possibilities of utilization of brick-grind-dust in systems based on portland cement
Palovčík, Jakub ; Kalina, Lukáš (referee) ; Opravil, Tomáš (advisor)
This thesis deals with possibilities of using brick-grind-dust which is a secondary product from manufacturing of grinded bricks. A boom in this method of masonry is connected with an increase of production of these secondary materials. These secondary materials are partly returned to brick manufacturing and partly buried in a landfill site. Due to their composition and origin, these materials are potentially pozzolan active, making them interesting for applications in hydraulic binders. The aim of the work was to study the physical and chemical properties of several brick-grind-dust and brick sands. Subsequently, binders based on these materials and Portland cement were prepared. The properties of the binders were modified by means of adding a commercially available polycarboxylate superplasticizer. The development of mechanical properties of the prepared binders has been studied over time. Hydration of the selected binders was analyzed by isothermal calorimetry.

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