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Rehabilitation technology of embankment dams by using suitable types of waste
Michalčíková, Magdaléna ; Kulísek, Karel (referee) ; Drochytka, Rostislav (advisor)
The subject of this work is to find an optimal technology for repairing existing embankment dams with emphasis on simplicity and ecological scalability. Next, secondary energy and waste materials will be evaluated as a partial replacement of a quality montmorillonitic clay. The aim of this will be to maximize the use of these waste materials. In the end a selection of materials for the locality will be made. The use of appropriate types of waste for repairs of embankment dams with clay based grouting compound technology has a great potential, especially with those dams that are not fulfilling their function due to their age.
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Desin of new technologies for invert grouting of masonry sewer
Dolák, Martin ; Melichar, Tomáš (referee) ; Drochytka, Rostislav (advisor)
The subject of this work is to find optimal grouting mixture for repairing existing brick sewer with insistence on ecological modesty. Secondary raw and waste materials will be evaluated as a partial replacement of good-quality materials, that are commonly used. Production wastes for which is after necessary adjustment found usage in another sphere of production are named secondary raw materials. In the end will be made a selection of appropriate secondary raw materials for a project of new technology of back grouting identified for repairing currently used brick sewers.
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New directions for waterproofing of underground transport
Čech, Tomáš ; Čížek, Luboš (referee) ; Šťastník, Stanislav (advisor)
This diploma thesis focuses on the implementation of waterproofing of underground constructions using an LLDPE membrane hinged on anchors. In the future, this method will replace the commonly used waterproofing system in Scandinavia with extruded polyethylene foam. This method of tunnel construction and waterproofing is compared with the NRTM method, often used in Central Europe. The thesis describes the installation of a waterproofing system, especially materials, accessories, welding devices and auxiliary installation equipment. The main focus of the thesis is to verify the reliability of the individual types of welds and to assess the waterproofing system in terms of implementation and environmental demands.
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Evaluation of load tests of permanent ground anchors instrumented with optical fibres
Chylík, Zdeněk ; Račanský, Václav (referee) ; Chalmovský, Juraj (advisor)
The thesis focuses on evaluation of load tests of permanent ground anchors instrumented with optical fibres. The thesis is divided into six parts. The first patr introduces topic of the thesis and work procedure. The second part contains all the information about the tested ground anchors, the building site, the loading scheme and methods of measuring. In the third part is evaluation of the apparent tendon free lenght and comparison of measurement methods. Fourth part includes evaluation of sheat friction in the free length. The fifth part describes the behaviour of the part, where free length changes to bond length. The sixth section presents an overall results with suggestions for possible continuation.
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Hodnocení účinnosti metod likvidace porostů trnovníku akátu
Jenčíková, Veronika
JENČÍKOVÁ, Veronika. The evaluation of the methods of disposal of black locust stands. Brno, 2019. Thesis. Mendel University in Brno. This thesis mainly deals with methods of liquidation of black locust stands and their comparison. The theoretical part also describes the biological characteristics of this problematic tree and its ability to invade the ecosystem. The practical part of this thesis deals with my own experiment in the Podyjí National Park, it was started in November 2016. Herbicide injection method, partial ringing and combination of these methods were chosen. The partial ringing was evaluated as the most effective method. Currently, there are wild horses (exmoor pony) grazing. They are able to suppress sprouting of the black locust. The thesis also contains various practical experiences of experts in this field. Complete removal of black locust stands is a very demanding process and requires several years of care for these areas. The choice of disposal method is linked to specific site conditions and to the desired target area.
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Proposition of new type of injection material with electrically conductive function
Uher, Vojtěch ; Černý, Vít (referee) ; Drochytka, Rostislav (advisor)
The bachelor thesis deals with the design of a new type of grouting material with electrically conductive function suitable for connecting cracks and gaps in building protection systems against lightning strikes and surges. The theoretical part summarizes the important knowledge about the grouting and grouting materials, introduces the current state of knowledge in the field of lightning and surge protection of buildings and also the preconditions of electrical conductivity of cement-based composite materials. In the practical part are summarized selected properties, which the electrically conductive grouting material should have and the relevant standards tests for experimental verification of selected properties are described. A wide range of primary and secondary fillers are studied and the most suitable ones are chosen to achieve a low electrical resistivity value. At the end of the thesis, there are recipes based on amassed knowledge and using secondary fillers to reduce the environmental impact of the developed materials during mass production. Reduced resistivity has been demonstrated in recipes using waste carbon and chopped carbon fibers, but has failed to fully meet standard requirements. The result of the work are new recipes and knowledge that can serve as a basis for further research.
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Desin of new technologies for invert grouting of masonry sewer
Dolák, Martin ; Melichar, Tomáš (referee) ; Drochytka, Rostislav (advisor)
The subject of this work is to find optimal grouting mixture for repairing existing brick sewer with insistence on ecological modesty. Secondary raw and waste materials will be evaluated as a partial replacement of good-quality materials, that are commonly used. Production wastes for which is after necessary adjustment found usage in another sphere of production are named secondary raw materials. In the end will be made a selection of appropriate secondary raw materials for a project of new technology of back grouting identified for repairing currently used brick sewers.
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New directions for waterproofing of underground transport
Čech, Tomáš ; Čížek, Luboš (referee) ; Šťastník, Stanislav (advisor)
This diploma thesis focuses on the implementation of waterproofing of underground constructions using an LLDPE membrane hinged on anchors. In the future, this method will replace the commonly used waterproofing system in Scandinavia with extruded polyethylene foam. This method of tunnel construction and waterproofing is compared with the NRTM method, often used in Central Europe. The thesis describes the installation of a waterproofing system, especially materials, accessories, welding devices and auxiliary installation equipment. The main focus of the thesis is to verify the reliability of the individual types of welds and to assess the waterproofing system in terms of implementation and environmental demands.
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New directions for waterproofing of underground transport
Čech, Tomáš ; Vaněrek, Jan (referee) ; Šťastník, Stanislav (advisor)
This diploma thesis focuses on the implementation of waterproofing of underground constructions using an LLDPE membrane hinged on anchors. In the future, this method will replace the commonly used waterproofing system in Scandinavia with extruded polyethylene foam. This method of tunnel construction and waterproofing is compared with the NRTM method, often used in Central Europe. The thesis describes the installation of a waterproofing system, especially materials, accessories, welding devices and auxiliary installation equipment. The main focus of the thesis is to verify the reliability of the individual types of welds and to assess the waterproofing system in terms of implementation and environmental demands.
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In an Apartment in a small town, Mikulov
Solár, Michal ; Kozelský, Tomáš (referee) ; Hora, Jan (advisor)
The concept is based on the historical development of the plot and the city as such. Historically, the area has been defined by self-help and without clearly specified dogmatic guidelines. It is thanks to this that the city is enriched with moments that do not fulfill only the aesthetic or spiritual, but also the functional nature of the city. The moment of surprise and certain visas enriches the interior of the yard as well as the city. At first glance, such annoying spaces have a certain quality, caused by the play of light or the overall concept of space. An important feature of the object is the moment of surprise from the perceived space. The transition from a clearly defined ground floor to the rear, at first glance, irrational courtyard is enhanced by a passage, which also refers to the typical division of the small town house. ARCHITECTURAL SOLUTION The principle of layering of individual spaces clearly reflects the moments of surprise. By specific fragmentation of the building, a character that resembles rather a family house as a residential object, spaces of different quality and utilization are created. The lower dwellings have a spatially and optically separated garden from the total mass, with the top terrace being terraces which are optically linked to the courtyard, but are not accessible to the public. The apartments in the attic have mostly urban character. This creates the principle of co-existence, which is typical of the whole area of the city. The layering is evident in the distribution of flats with different connections to gardens and terraces as well as the variety of housing units. The spirit of the place is a standing cellar that reflects the historical transformation of the parcel and is a symbol of the locality.
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