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The influence of heavy metal oxides on the properties of cement pastes
Kašpárková, Kateřina ; Rovnaníková, Pavla (referee) ; Vyšvařil, Martin (advisor)
The Bachelor´s thesis is focused on study of the effect of increased content of heavy metals in cement production on the properties of this cement and the effect of addition of heavy metal oxides in cement pastes production. The thesis also deals with structural changes in particular components of cement in the presence of heavy metals. The effect of addition of heavy metal oxides on the properties of cement pastes is demonstrated in the experimental part by determining their mechanical properties, pore structure, and observation of the progress of hydration.
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Influence of heavy metal oxides on the formation and properties of Portland clinker
Kašpárková, Kateřina ; Rovnaníková, Pavla (referee) ; Vyšvařil, Martin (advisor)
The Master’s thesis is focused on a study of the effect of increased content of heavy metals present in a raw meal on the formation and properties of prepared clinker and acquired cement. Main attention is devoted to changes on the physical, mechanical, microstructural and hydration properties. The theoretical part contains an overview of clinker minerals occurring in Portland cement including the possibility of incorporation of heavy metals into their structure and affecting the properities of the cement. In the experimental part, there is compared the effect of heavy metal oxides on the composition and hydration properties of portland clinker and physical-mechanical and microstructural properities of cement pastes prepared from this clinker.
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Droplet-borne infections: knowledge, attitudes and behavior of pupils of the lower secondary school
Kašpárková, Kateřina ; Pavlasová, Lenka (advisor) ; Hlaváčová, Lucie (referee)
The diploma thesis deals with droplet infections and finds out what knowledge, attitudes and behavior pupils of the lower secondary school have towards them. The theoretical part focuses on educational documents in the Czech Republic, including the occurrence of topics about droplet infections in RVP ZV, didactic game as a teaching method and a detail description of selected viral and bacterial droplet infections. In the practical part, the diploma thesis finds out what knowledge, attitudes and behavior students have about droplet infections. Subsequently, a didactic game is performed and the effectiveness of the didactic game is evaluated by comparing the pre-test and the post-test on the basis of changes in the knowledge, attitudes and declared behavior of the interviewed pupils. The results showed that due to the didactic game there was an improvement in the students knowledge and a desired change of attitudes. The declared behavior of students remained unchanged, as the entry level of students in this area was already at a high level.
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Influence of heavy metal oxides on the formation and properties of Portland clinker
Kašpárková, Kateřina ; Rovnaníková, Pavla (referee) ; Vyšvařil, Martin (advisor)
The Master’s thesis is focused on a study of the effect of increased content of heavy metals present in a raw meal on the formation and properties of prepared clinker and acquired cement. Main attention is devoted to changes on the physical, mechanical, microstructural and hydration properties. The theoretical part contains an overview of clinker minerals occurring in Portland cement including the possibility of incorporation of heavy metals into their structure and affecting the properities of the cement. In the experimental part, there is compared the effect of heavy metal oxides on the composition and hydration properties of portland clinker and physical-mechanical and microstructural properities of cement pastes prepared from this clinker.
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The influence of heavy metal oxides on the properties of cement pastes
Kašpárková, Kateřina ; Rovnaníková, Pavla (referee) ; Vyšvařil, Martin (advisor)
The Bachelor´s thesis is focused on study of the effect of increased content of heavy metals in cement production on the properties of this cement and the effect of addition of heavy metal oxides in cement pastes production. The thesis also deals with structural changes in particular components of cement in the presence of heavy metals. The effect of addition of heavy metal oxides on the properties of cement pastes is demonstrated in the experimental part by determining their mechanical properties, pore structure, and observation of the progress of hydration.
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