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The potential of karst conduits development in the area between the Úštěcký and Košátecký stream basins and the delimitation of the catchment areas of the main spring groups
Pátek, Karel ; Bruthans, Jiří (advisor) ; Kůrková, Iva (referee)
The main objective of the work was to determine the extent to which the rocks forming the outcrops in the area between the Úštěcký and Košátecký Creek basins are subject to decay and karstification. This was studied by means of acid leaching. The study area contains some of the most important groundwater reserves in the Czech Republic and understanding the local conditions is crucial for proper groundwater management. Samples were collected from exposed rock outcrops in the vicinity of Košátecký Creek and the soluble component (calcite content), degree of disintegration, rock density and porosity were determined by leaching the samples in 10% HCl solution. In general, it was observed that at a low calcite content, the degree of disintegration of the samples during leaching was low, but the porosity of the samples increased. When calcite content exceeded 40%, most samples started to disintegrate at least from 50%. The results showed that there are layers with a high calcite content and high disintegration degree in the study area, which may host karst preferential pathways. Such layers are thin and embedded in thick layers of quartz sandstone. In the second part of the work, the distribution of hydrogeological basins was estimated on the basis of a new base flow map, measured stream flows and groundwater...
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Measuring the retention curve of rocks: the example of sandstone from the Jizera formation
Fataciune, Sotir ; Slavík, Martin (advisor) ; Ondovčin, Tomáš (referee)
Retention curve describes the ability of an unsaturated porous medium to retain water at different suction pressures. It thus plays an important role in providing information on the movement and occurrence of water in the vadose zone. While the determination of the retention curve for soil is common, it is far less common in the case of rocks. The aim of this bachelor thesis is to determine the retention curve of sandstone from the Jestrebicka jehla in Kokorinsko using the tensiometer - weight method. A partial aim is to compare this curve with two previous measurements on the same sandstone: i) measurements by student A. Studencová, using the tensiometer - weight method, and ii) measurements made by the laboratory of Research Institute for Soil and Water Conservation, according to a slightly modified method of CSN ISO 11274. There were notable differences between the retention curves. The retention curve according to the CSN for a given suction pressure showed lower moisture values, which is probably due to insufficient saturation of the sample and air entrapment in the rock pores. Relatively large differences in the retention curve between two independent tensiometer - weight method measurements were also found, which are probably due to insufficient contact between the tensiometer and the porous...
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Brno City Hospital
Seďa, Ondřej ; Hybská, Bohumila (referee) ; Sedláček, Michal (advisor)
The topic of the diploma thesis is the design of a town hospital at Kraví hora in Brno. The design of the new city hospital in Brno replaces the functions of two existing city hospitals, the Merciful Brothers Hospital and the Trauma Hospital, whose technologies do not meet the medical requirements of the 21st century. In the hospital there are standard facilities, namely outpatient medical facilities, including day hospitals, central blood collection, emergency, operating rooms, central sterilization, anesthesiology and resuscitation departments, intensive care units, maternity and neonatology departments, examination complement , laboratories, rehabilitation departments, inpatient departments of surgical and internal medicine, non - medical and commercial premises, personnel background, technical background and parking. The hospital is a 10-storey building. The main idea of the design was to create a hospital with the views of the park even Brno skyline.
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Gel infusion screen system for additional waterproofing of various types of masonry with share of secondary raw materials
Melichar, Jindřich ; Klečka,, Tomáš (referee) ; Dohnálek,, Pavel (referee) ; Novotný, Miloslav (referee) ; Drochytka, Rostislav (advisor)
Virtually any construction project in our climate zone is facing some form of moisture. Older and historical buildings are mostly affected by the negative impact of water. Previously, the additional reduction of the moisture was executed only by mechanical methods, pushing insulating sheets or breaking through and cutting of masonry. Over time chemical methods were also invented, which are compared to the mechanical considerably simpler and user friendly applications to statics of treated buildings, making them ideal for the treatment of historical buildings or buildings that would not bear significant disruption. The main principle of chemical methods of redevelopment of wet masonry is the application of special material into the line of drilled holes with a given pitch. Subsequent penetration of the grouting material is believed to intersect an arc of individual drill holes, and thus to create so-called grout curtain that prevents the accumulation of water above it. Injection material may also contain a proportion of secondary raw materials, thereby reducing the influence of the impact of production on the environment. Efficiency infusion materials in masonry affected by many factors, such as temperature, humidity, or the type of material treated. It is also an important factor to determine the effectiveness of the remediation of the material, proving its ability to penetrate the building material by identifying its presence in it.
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Evaluation of stone column defects using an ultrasonic method
Kršková, Šárka ; Kocáb, Dalibor (referee) ; Cikrle, Petr (advisor)
This Bachelor thesis deals with evaluation of structure defects in stone column using ultrasonic method. Content of this thesis is divided to theoretical and practical part. Aim of theoretical part is to explain process of evaluation of existing stone structures according to norm ČSN ISO 13822. This part also contains listings of method for stone testing and brief explanation of chosen types of rock used for stone structures. Practical part contains tests used on columns using ultrasonic method and laboratory tests of chosen samples. Evaluation of measuring using ultrasonic method is based on knowledge of this method and visual inspection of columns. In laboratory tests were compared results of chosen properties on examples of same type of rock. These examples had different shape, moisture and measurement.
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Renovation of the castle in Velké Němčice
Malínková, Valerie ; Muroň, Ivo (referee) ; Ležatka, Lukáš (advisor)
This bachelor thesis deals with the restoration of a castle in Velké Němčice. The thesis builds on an architectural study carried out in the AG033 course of the Restoration of Monuments Studio. The task of the thesis is to create a complete project for the appropriate restoration and reconstruction of the castle and to propose its new utilization. At the same time, the thesis focuses on the solution of the castle's immediate surroundings. The object of the solution will be designed as a socially cultural object with administrative functions. The castle should serve as a new town hall, and in accordance with this, the following rooms will be created in the castle: a ceremonial hall, information center, mayor's office, secretary's office, registry office, accountant's office, archive, library, club room, refreshment facility, and interactive room. To achieve the implementation of the new operation in the castle, the correct restoration of the historical object is necessary. Using surveys and historical sources, I examine the architectural values and construction of the building. I strive to preserve historically significant layers, remove intrusive modern elements, and return the object its original expression. With the help of new technologies, I also strive to preserve the building for future generations. I propose minimum use of modern structures and elements, and therefore mainly focus on proper reconstruction and restoration.
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Advanced evaluation of fracture tests of selected rock specimens
Kubeš, Pavel ; Veselý, Václav (referee) ; Keršner, Zbyněk (advisor)
This bachelor's thesis deals with the advanced evaluation of fracture tests of selected rock (sandstone) specimens. The first part describes several fracture models/methods, fracture-mechanical parameters, process and configuration of the tests, used specimens and the procedure of data processing using the program GTDiPS. The second part contains neatly sorted evaluation of load-displacement diagrams. The results of the work are calculated fracture-mechanical parameters of various sandstones and their mutual comparison.
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Artificial stone - methods of preparation and properties
Pluskalová, Barbora ; Bayer, Patrik (referee) ; Rovnaník, Pavel (advisor)
The aim of the thesis „Artificial stone – Methods of preparation and it´s properties“ deals with the various methods and issues concerning the preparation of artificial stone. The thesis presents the summary of materials and various methods suitable for the preparation and points out mechanical properties, including durability of material, which serves as an alternative to natural stone. Further on, the thesis deals with the studies of binding systems based on geopolymers, which are used for the artificial stone preparation. This part of the thesis is associated with the experimental part, which is aimed at choosing the suitable mixing ratio of binder to aggregate in the artificial stone based on metakaolin geopolymer. According to the results of mechanical tests and aesthetic impression the author chose the best composition and then created a decorative element.
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Color possibilities of artificial sandstones based on geopolymers
Lattenberg, Pavel ; Kalina, Lukáš (referee) ; Opravil, Tomáš (advisor)
This thesis deals with the possibility of preparing artificial sandstone based on geopolymer matrix and ways to achieve a natural appearance and good mechanical properties. The theoretical part is devoted to the current state of knowledge in the field of geopolymers and their recovery potential, but also the natural sandstone and its geographic diversity. The practical part deals with the preparation of various types of binding systems based on metakaolin, ground blast furnace slag and water glass. Their comparison, and the possibility the appearance and characteristics change in the composition of the filler.
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