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Dispersed reinforcement influence on the maturation of polymercement materials
Zaťko, Petr ; Jakubík, Aleš (referee) ; Bydžovský, Jiří (advisor)
The diploma thesis is focused on polymercement materials with dispersed reinforcement. The aim of this work is development of suitable polymercement mixture and monitoring of the impact of dispersed reinforcement on the course of maturation of these materials and physico-mechanical properties. The effect of high temperatures on the properties of the mortar is also examined. Emphasis is placed on the use of alternative resources and byproducts. Mixed binder of cement and slag and admixture of microsilica was used. Recycled cellulose was used as dispersed reinforcement and was compared with commercial polypropylene fibers.
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Design of the office structure
Totková, Lucie ; Pinkas, Karel (referee) ; Klusáček, Ladislav (advisor)
This thesis deals with the design and assessment of the cooling reinforced concrete ceiling by EC2: Design of Concrete Structures. The introductory part is focused on selected type cooling ceiling system and its detailed description. The important part is dedicated to influence of water temperature on reinforced concrete ceiling structure. In this thesis is included calculation of internal forces, calculation of maximal deflection of the slab and its assessment of the puncture. This task is analysed using the software SCIA Engineer and ANSYS.
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The development of fire-resistant repair mortars with fine-grained filler
Záruba, Jiří ; Gross,, Tomáš (referee) ; Bydžovský, Jiří (advisor)
The diploma thesis is focused on fire-resistant repair mortar with fine-grained filler. The aim of this work is the research and development of fine-grained Mortars resistant to high temperatures, which are characteristic at the beginning of the fire. The theoretical knowledge with subsequently realized laboratory verification was used. At-tention was paid to the masses based on the mixed binder comprising cement and blast furnace slag, respectively. high-temperature ash. Cellulose fibres were used as the dis-persed reinforcement. Two kinds of aggregate were assessed - fly ash agloporit and am-phibolite incl. combinations thereof. Laboratory tests were carried out via determination of basic material properties (density, strength, consistency, dimensional changes etc.) after exposure to extreme temperatures. A substantial part of the research was also study of different cooling conditions - slow and fast (water and air). Selected formulations were subjected to temperatures up to 1200 ° C. In the conclusion is selected several recipes that have been found to be optimal for continuing research on the basis of the results and findings.
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Airconditioning system for intensive care unit
Bosák, Jan ; Tesař, Zdeněk (referee) ; Rubina, Aleš (advisor)
The brachelor's dissertation deals airconditioning system, that operate clean spaces in the hospital. System is divide for two separate working unit. The first system operate surgical intesive care unit and next near spaces. The second system operate bed's rooms and their near spaces. The first systém shoulds smother thermal load operate's rooms in summer time and hot air ventilation in winter time. The second system does hot air ventilation whole year and It is refill fan-coils for smother thermal load. Both of them can adjust air humidity. Theory part of dissertation deals clean spaces with specialization on hospitals, for example operating theatre and intensive care unit.
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RESEARCH AND DEVELOPMENT COMPOSITE MATERIAL WITH A HIGHER RESISTANCE TO HIGH TEMPERATURES
Válek, Jaroslav ; Durica,, Tibor (referee) ; Kolář,, Karel (referee) ; Sitek,, Libor (referee) ; Bodnárová, Lenka (advisor)
Concrete has many advantageous properties as regards resistance to fire. It is non-flammable and it has a low thermal conductivity. However, concrete structures, which are not designed for resistance against fire, show significant damage after heating. In particular, the explosive flaking with the consequence of weakening the reinforced concrete cross-section and exposing the steel reinforcement to the temperatures higher than critical temperature of reinforcement. There are only a few possible measures of preventing or mitigating the effects temperature load used. Ways of protection can be divided into two systems: active and passive. Active systems are designed to ensure the greatest possible reduction of temperatures the concrete is exposed to. Passive systems directly resist to high temperatures and fire. Design of composition of concrete with the aim of higher resistance to exposition to high temperatures belongs among the passive systems. A part of the work focuses on summary searches of the problems of concrete and reinforced concrete structures exposed to high temperatures and fire. The goal of the work is defining requirements for cement matrix based composite material and its design ensuring the highest possible resistance to high temperatures or direct fire.
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Air conditioning in the sports center
Měcháčková, Martina ; Jelínek, Ondřej (referee) ; Blasinski, Petr (advisor)
The topic of the work is the design of air handling units in a sports center. The thesis is divided into 3 parts. The first part deals with theory. It focuses on indoor swimming pools and their inner microclimate, humid air, dehumidification, and the design of units for spaces with increased level of humidity. The second part is mainly about the design of the air handling unit. There are three units designed for a building; unit no. 1 for a tennis court, unit no. 2 for sanitary facilities, and unit no. 3 for the indoor swimming pool. The last part deals with project documentation.
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Optimization of indoor climate in the "open space" office
Vysloužil, Lukáš ; Blasinski, Petr (referee) ; Maurerová, Lenka (advisor)
The main aim of this thesis is design air-conditioning system and optimization of indoor climate by solar shading. In theoretical part I focused on dividing and description off different types of solar shading. In the next part I designed suitable air-conditioning system for the open space office. The last part is first concentrating on the simulation of the indoor climate in software BSim2014. And then on evaulation of the appropriate solar shading system, whick I can use in the building.
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Air conditioning in the wellness-center
Zerzońová, Karolína ; Rubinová, Olga (referee) ; Blasinski, Petr (advisor)
Bachelor thesis deals with the design of air conditioning equipment for the Wellness-center at pension in Malenovice. The thesis is divided into 3 parts. In the first of them, the thesis work deals with the theorical part. The theory is focused on the division of atmospheric air filters info different categories, pocket filters and their types of media and design. At the end, the theoretical part deals with the mechanism od filtration, separation, filtration efficiency and pressure losses. The second part of this bachelor thesis is mainly about the design of the air handling unit. There are three units designed for a building. Unit no. 1 is for a wellness, unit no. 2 for sanitary facilities and unit no. 3 for the fitness. The thesis deals with the transport of fresh air to the interion of selected rooms and coverage of water gains from whirlpools, humidity adjustment, heat gains during the summer and heat losses in the winter. The last part deals with project documentation.
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Effect of building construction on thermal load of space
Výravská, Zdeňka ; Ell, Jiří (referee) ; Tesař, Zdeněk (referee) ; Rubina, Aleš (advisor)
This master’s thesis focuses on effect of outer building construction on thermal load of space. The effect of translucent and non-translucent construction is discussed. The project of air-conditioning system is prepared for the two alternatives of the translucent construction, including the purchase price of the airconditioning system and glazing and the savings on summer cooling. Afterwards the period of the recovery of investment is calculated. The plan of the airconditioning system is connected to my bachelor’s thesis “Airconditioning in the car showroom”, the subject of which was the plan of the airconditioning system of the car showroom.
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Influence of essential parameters on the radial clearance and stress-strain states in ball bearings
Šperka, Václav ; Vrbka, Jan (referee) ; Fuis, Vladimír (advisor)
Master thesis is focused on the research of influence of selected substantial parameters on stress – strain states in the deep groove radial ball bearing. The influence of radial load is analyzed, such as the influence of size of the bearing and row of the bearing, also influence of radial clearance is quantified. Next, the influence of thermal distribution in the bearing is analyzed for different combinations of thermal distributions and radial clearances. Conclusions from analyses are then used in the last task – suggestion of radial clearance for customer – specified assembly. Problem is solved using the finite element method (FEM) in pre/post processor MSC.Patran and solver MSC.Marc. To make analyses faster the substantial parameters are implemented in the algorithm for automatic generation of the bearing calculation (batch file).The theme of this thesis was commissioned by ZKL - Research and development, a. s.
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