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The influence of crystallization additives to waterproof concrete
Rosecký, Pavel ; Louda, Pavel (referee) ; Hela, Rudolf (advisor)
This bachelor´s thesis deals with influence of crystallization additives to waterproof concrete. In the theoretical part is detailed analysis individual components in concrete production, improving waterproofing properties and finally functions and properties of crystallization materials. In the practical part I deal with influence of selected crystallization additives on properties of fresh and hardened concrete.
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Requirements for manager of the construction company
Malková, Darina ; Louda, Pavel (referee) ; Linkeschová, Dana (advisor)
Bachelor’s thesis deals with the requirements for manager of the construction company. The theoretical part focused on manager attributes, knowledge, managerial activities and the ability to lead the team. The practical part bachelor’s thesis based on the hypotheses, which I checked by a questionnaire survey. This survey finds especially which requirements are placed on managers in the construction company and whether students of Faculty of Civil Engineering Brno University of Technology are comply with these requirements.
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Influence of fine particles granulometry on the physico-mechanical properties of concrete
Louda, Pavel ; Klečka,, Tomáš (referee) ; Ďurica,, Tibor (referee) ; Hubáček, Adam (referee) ; Hela, Rudolf (advisor)
The theoretical part describes the properties of fine-grained admixtures and the ways how these admixtures modify concrete properties. There are also described ways to assemble grain curves in the range 0-1000 m. The practical part describes the properties of all the concrete components used for the tests. From the admixtures and cement, the individual grain curves were compiled. Curves were assembled in the first stage manually by using MS Excel. Subsequently, a simple program was developed based on the knowledge of composing grain curves, which automatically compiles the grain curve according to the given limits. The maximum cement replacement was set at 25% by weight. The physical and mechanical properties of the graded curves thus established were first verified on mortar mixtures where the workability, bulk density and strength were verified at the age 7, 28 and 90 days. In addition, the porosity of cement cement with mercury porosimetry has been verified for selected recipes. The acquired knowledge was subsequently applied to the concrete in the laboratory. Here the maximum cement compensation was set at 30%. In particular, concrete consistency over time, air content in the concrete and compresive strength of concrete at the age 3, 7, 28 and 90 days were verified. Verification was also carried out in practice on the optimization of self-compacting concrete. Mechanical properties have been retained for optimized recipe but there were financial savings and CO2 emissions reductions compare with the original recipe.
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Career choice in adolescence: role of gender stereotypes and identification with mathematics
Louda, Petr ; Smetáčková, Irena (advisor) ; Rendl, Miroslav (referee)
Career choice in education and the acquired/achieved level of education are factors that influence social status of men and women. Despite the fact that women, on average, currently achieve a higher level of education than men, women's marketplace status and their height of salary often do not correspond to it. One of the reasons is a low proportion of women in mathematics-related subjects. The aim of this research was to investigate the role of gender stereotypes and identification with mathematics in career choice. In the theoretical part of this thesis, I introduce the basic terms related to gender and gender stereotypes, the role gender plays in institutions and the potential causes of gender differences in the performance in mathematics. In the empirical part, I analyse data from a questionnaire study investigating career choice, level of identification with mathematics, attitudes to courses in the curriculum and the level of gender stereotypes in Czech adolescents. The results suggest few differences between girls and boys in these areas. However, the level of identification with mathematics and the level of gender stereotypes in the career area are related to the educational career choice.
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English translation counterparts of the German pronoun man
Louda, Petr ; Brůhová, Gabriela (advisor) ; Luef, Eva Maria (referee)
The thesis describes and analyzes the possible translation counterparts of the German pronoun man which is used to express the general human agent. As English does not entail such device, it resorts to other syntactic and morphological devices such as the passive voice, various personal pronouns or non-finite constructions. The thesis also aims to discern and describe the systems and rules of the use of the translation counterparts by the means of quantitative- qualitative analysis based on two classification systems of man taken over from Helbig & Buscha, 2017, and Gelabert-Desnoyer, 2008. All excerpts are classified with regard to the counterpart used in the translation as well as with regard to the features attributed to the examples of man based on the two classification systems. The analysis is performed on 247 examples taken over from InterCorp v13, from the fields of fiction writing and parliamentary debates. Keywords general human agent, man, translation counterparts, InterCorp
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Influence of fine particles granulometry on the physico-mechanical properties of concrete
Louda, Pavel ; Klečka,, Tomáš (referee) ; Ďurica,, Tibor (referee) ; Hubáček, Adam (referee) ; Hela, Rudolf (advisor)
The theoretical part describes the properties of fine-grained admixtures and the ways how these admixtures modify concrete properties. There are also described ways to assemble grain curves in the range 0-1000 m. The practical part describes the properties of all the concrete components used for the tests. From the admixtures and cement, the individual grain curves were compiled. Curves were assembled in the first stage manually by using MS Excel. Subsequently, a simple program was developed based on the knowledge of composing grain curves, which automatically compiles the grain curve according to the given limits. The maximum cement replacement was set at 25% by weight. The physical and mechanical properties of the graded curves thus established were first verified on mortar mixtures where the workability, bulk density and strength were verified at the age 7, 28 and 90 days. In addition, the porosity of cement cement with mercury porosimetry has been verified for selected recipes. The acquired knowledge was subsequently applied to the concrete in the laboratory. Here the maximum cement compensation was set at 30%. In particular, concrete consistency over time, air content in the concrete and compresive strength of concrete at the age 3, 7, 28 and 90 days were verified. Verification was also carried out in practice on the optimization of self-compacting concrete. Mechanical properties have been retained for optimized recipe but there were financial savings and CO2 emissions reductions compare with the original recipe.
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Transition Modelling on Separated Flow in Turbine Cascade
Louda, Petr ; Příhoda, Jaromír ; Kozel, K.
The work deals with numerical simulation of turbulent ow through turbine cascade by RANS model with model of transition to turbulence. Performance of two transition models is compared. First one is gamma-zeta model based on transition criteria, second one algebraic transition model based on the concept of laminar uctuations energy (Kubacki, Dick 2016). The criterion for transition in separated state is re-formulated in order to remove stream-wise non-local formulation. The performance of the transition models is observed on the shock wave - boundary layer interaction on turbine blade.
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