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Influence of Initial Conditions on the Modulus of Elasticity of Concrete for Bridges
Blažek, Michal ; Bílek,, Vlastimil (referee) ; Cikrle, Petr (advisor)
Beside the compressive strength of concrete, which is considered as the basic parameter parameter for design of concrete structures a modulus of the concrete elasticity should be set as well. This thesis deals with influences, which are acting on the concrete, particularly within the initial stage of its hardening (i.e. within 28 days after casting). Nowadays, when time is the most valuable factor, some knowledge is required about mechanical properties of concrete earlier than after above mentioned 28 days and to apply them advantageously. The concrete in initial stage of hardening is influenced by many factors that affect progress of the elasticity modulus during the course of the time. For understanding of these problems a literature search was performed, as well as the experiment demonstrating the effect of temperature on the modulus of the concrete elasticity. The effect of temperature on the modulus of elasticity of concrete in initial stage of hardening has not been intensively studied yet. Therefore, more attention is paid to it by this elaborate. The experiment investigated the static and dynamic elastic modulus of concrete, whose recipe is similar to one used for production of prefabricated and prestressed bridge girders.
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Heat exchangers for heating
Blažek, Miroslav ; Hejčík, Jiří (referee) ; Jaroš, Michal (advisor)
The Heat exchangers are important part in the energy transfer between two substances. Bachelor’s thesis deals with the problems of the option of the heat exchangers. It seperated into two parts. In the first theoretic part there are shown the basic criteria of this option. The next part deals with the most frequent types of usage of heating units or convectors.
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New build residential building, Valašské Meziříčí
Blažek, Milan ; Woytela, Jindřich (referee) ; Benešová, Romana (advisor)
The subject of this Bachelor thesis is a project documentation for construction of the building – New building of the apartment house in Valasske Mezirici. The building is designed for housing, it has six storeys, without a basement and with a lift. It contains ten dwelling units with access to the terrace and a possibility of own parking right in the building. The ground floor is largely made up of parking space – one public garage with eight parking spots and two single garage doors for two maisonette flats that are located on the fifth floor. A mobile surface of the garage is made of steel fibre reinforced concrete slab with an epoxy coating. The remaining part of the ground floor is made up of main corridor, utility room and cleaning room. The other floors are made up of large flats designed primarily for family housing with a posibillity of access to large terraces orientated to south. Load-bearing structure is made of precast frame construction. that lies on cast-in-place reinforced concrete foundation footing connected by reinforced concrete thresholds in the spots of cladding. The cladding is made of clay blocks and insulated with boards that are made of mineral stone fibres according to ETICS. The ceiling is made up of hollow floor prestressed panels. Stairway is solved as precast. The bulding is covered by ventilated mono-pitched double layer roof with wooden wall plates and rafters.
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Wine Farmstead in Jaroslavice
Blažek, Martin ; Velková, Soňa (referee) ; Foretník, Jan (advisor)
Winery of Markel family is located on the border of small South Moravian village Jaroslavice. The area is surrounded by vineyards, fields and an original castle peasantry. The area is heavily influenced by insensitive exploitation of a former brickyard. A footprint of the exploitation apparent at first glance has remained in the relief. On one hand a scar, on the other a fascinating geological spectacle of an up to 10 meters high earthen-loess wall. The spacious and various area becomes a winery once again.
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Zhodnocení zdravotního stavu dřevin v městské zeleni Zábřehu
Blažek, Martin
The aim of my Bachelor thesis is to assess several fundamental areas in the town of Zábřeh. The health survey was made on „Šestikrejcarová alej, Alej na hrázi, Bezručovy sady and Wolkerovy sady“. In the mentioned areas were chosen the most important trees with the worst mechanical and health status. On the basis of a detailed evaluation of the trees were proposed technical measures and treatments with perspection od location. Real costs of technical measures was suggested. Its located in tabs.
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Descriptor lists for irises, peonies and daylilies in the Průhonice Botanic Garden
Sekerka, Pavel ; Blažek, Milan ; Blažková, Uljana ; Caspers, Zuzana ; Macháčková, Markéta ; Fáberová, I. ; Papoušková, L. ; Matiska, P. ; Koudela, M.
In 2015, the Council of Plants Genetic Resources agreed to include genus Hemerocallis (daylily) and genus Paeonia (peony) into the collections of genetic resources of the National Program. In addition to the selection of plants suitable for the National Program, we started to prepare descriptor lists for these genera in cooperation with students of the Department of Horticulture Faculty of Agrobiology, Food and Natural Resources Czech University of Life Science, Prague. The descriptor list was supposed to cover botanical characteristics of wild species as well as the advanced garden ornamental varieties, because the species of peonies and daylilieas are medicinal plants and it is therefore appropriate to incorporate them in the National Program. At the same time, it turned out that the descriptor list used for Iris is intended primarily for bearded irises (Iris subgen. Iris). However, in the last twenty years, the Czech breeders have specialized also in other groups of irises, especially in Siberian and Japanese irises and Spuria group, which don’t have any beard on outer tepals and have other differerent characteristics from the subgenus Iris. Therefore, we have decided to extend the existing descriptor list to cover the whole genus except bulb irises.
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Payment order procedures
Blažek, Martin ; Sedláček, Miroslav (advisor) ; Smolík, Petr (referee)
Payment order procedures Abstract This diploma thesis is thematically focused on payment order procedures which represent a way to enforce a monetary claim in civil court proceedings in a simpler, faster and more effective way. Its aim is to provide an analytical view of the chosen topic, point out and comment on problematic aspects of the current legislation and take a position on the intended future legislation. The diploma thesis is divided into six chapters. Chapter No. 1 provides a basic introduction to the chosen topic when it offers a brief look at the history and specifies the concept of payment order procedures in more detail. Chapter No. 2 elaborates a regular payment order in detail, starting with the characteristics of the prerequisites for its issuance and ending with its legal power and enforceability. Chapter No. 3 deals with the electronic payment order, the introduction of which into the legal system is seen as the initial beginning of the planned electronization of the Czech justice system; within the framework of this chapter, with regard to the nature of the electronic payment order, its differences from the regular payment order are particularly pointed out. The focus of Chapter No. 4, which is systematically arranged similarly to Chapter No. 2, is the European payment order which,...
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Production of the distributor by non-convential forming technology
Blažek, Matěj ; Peterková, Eva (referee) ; Jopek, Miroslav (advisor)
The thesis is focused on the evaluation of the possibility of manufacturing a distributor body used for distribution of heat-bearing medium in underfloor heating. For the part, due to the series of 100 000 pieces·year-1, the technology of high-pressure hydrofroming without active action of axial presses is chosen. The original solution with a forming pressure of 58,5 MPa did not lead to success and an optimization was necessary, where the pressure was increased to 158,5 MPa, which also did not lead to success. This was followed by a further optimization consisting of hot forming at 700 °C and a pressure of 158,5 MPa, again with no successful solution. The last possible treatment option of changing the material to 11 321 steel and pressure 134,2 MPa was not successful and the high pressure hydrofroming method with passive action of axial dies is not recommended for industrial practice. The final step was an economic evaluation, where the price per piece was determined to be 133,3 CZK with a 20% margin. Considering that the product is suitable the profit will start to be generated after the production of 140 460 pieces.
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