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National Repository of Grey Literature 5 records found  Search took 0.00 seconds. 
Combined Effect of Li, Cu and S Doping on Structure and Hydration of β Dicalcium Silicate
 Sedlačík, Martin ; Bartoníčková, Eva ; Novotný, Radoslav ; Palovčík, Jakub ; Másilko, Jiří ; Staněk, Theodor ; Rybová, Alexandra
This study investigates the effect of Li, Cu and S on the structure and hydration of the beta modification of dicalcium silicate (β-C₂S). The doped β-C2S phase was prepared by burning beta-C2S with dopant sources. The structure of prepared β-C2S samples was examined using X-ray diffraction, scanning electron microscopy and infrared spectroscopy. Heat evolution during hydration was assessed by isothermal calorimetry. A positive effect on cement hydration was observed for several dopant combinations. 
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High-valueable gypsum binder based on secondary raw materials
 Rybová, Alexandra ; Dvořák,, Karel (referee) ; Fridrichová, Marcela (advisor)
The thesis is oriented on preparation of high – valuable gypsum binder using secondary raw materials with emphasis on technological properties and their improvement by aplication of selected modifier aditives. The first part of the task is dedicated to a teoretical knowledge in the field of gypsum binders, especially to the raw materials, properties and possibilities of utilization. Second part is focused on experimental works that test properties of gypsum and effectivness of selected modifier aditives.
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Properties Modification of Portland Cements Oriented to Reduce CO2 Emissions
 Rybová, Alexandra ; Jiroušková, Kateřina (referee) ; Fridrichová, Marcela (advisor)
The thesis is oriented on monitoring of hydration process of portland cement based on fluidized bed ash, firstly on investigation of AFt phases, mainly ettringite and thaumasite. Specific aim of the task is to prepare the scheme of these minerals synthetic preparation and to verify their laboratory preparation by different ways, using methods of RTG-diffraction analysis and scanning electron microscopy.
Detailed record
Properties Modification of Portland Cements Oriented to Reduce CO2 Emissions
 Rybová, Alexandra ; Jiroušková, Kateřina (referee) ; Fridrichová, Marcela (advisor)
The thesis is oriented on monitoring of hydration process of portland cement based on fluidized bed ash, firstly on investigation of AFt phases, mainly ettringite and thaumasite. Specific aim of the task is to prepare the scheme of these minerals synthetic preparation and to verify their laboratory preparation by different ways, using methods of RTG-diffraction analysis and scanning electron microscopy.
Detailed record
High-valueable gypsum binder based on secondary raw materials
 Rybová, Alexandra ; Dvořák,, Karel (referee) ; Fridrichová, Marcela (advisor)
The thesis is oriented on preparation of high – valuable gypsum binder using secondary raw materials with emphasis on technological properties and their improvement by aplication of selected modifier aditives. The first part of the task is dedicated to a teoretical knowledge in the field of gypsum binders, especially to the raw materials, properties and possibilities of utilization. Second part is focused on experimental works that test properties of gypsum and effectivness of selected modifier aditives.
Detailed record

See also: similar author names
1 RYBOVÁ, Adéla
4 RYBOVÁ, Aneta
1 Rybová, Alena
4 Rybová, Aneta
2 Rybová, Anna
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