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The GAP in Brno
Koudelková, Veronika ; Bernátek, Tomáš (referee) ; Palaščák, Michal (advisor)
The subject of my work was to fill a selected gap in the heart of Brno with a residential building, to compact the city center and effectively use unmaintained spaces. The solved area is located on Cejl street in the Zábrdovice district, nicknamed the Brno Bronx. With my design, I try to contribute to the attractiveness of the location and the creation of pleasant living in the city center as part of a friendly and creative community. The concept is based on the ideal use of the land and also takes into account the surrounding buildings and normative requirements for their placement, spacing and sun exposure. The resulting design therefore consists of three buildings - two apartment buildings in the courtyard and a street building, which in addition to the vertical communication serves also as a noise and dust filter and with its facade brings into the street a hitherto non-existent green element. In this building there is also a space on the ground floor for the sale of local plants, flowers or vegetables, which residents can grow directly on the plot, in greenhouses in the street building or directly on spacious galleries connecting all 3 designed buildings. The design also takes into account the need for parking spaces for residents, which are located on the ground floor directly below the apartment buildings together with the cellars.
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Micro-mechanical performance of concrete used as recycled raw material in cementitious composite
Hrbek, Vladimír ; Koudelková, Veronika ; Prošek, Z. ; Tesárek, P.
The reduction of industrial pollution is recently one of main goals over all fields. In civil engineering, re-cycling of structural waste provides wide opportunity contributing this effort. This paper focus on re-use of concrete waste, which after further processing can be used in new constructions as partial supplement to the mixture. To investigate the impact of re-cycled concrete addition, it is necessary to determine mechanical and structural parameters of individual phases in the “raw” material. For this purpose, grid indentation and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM, EDX) are combined to determine properties of concrete sample.
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Utilization of image and signal processing techniques for assessment of built heritage condition
Koudelka_ml., Petr ; Koudelková, Veronika ; Doktor, Tomáš ; Kumpová, Ivana ; Kytýř, Daniel ; Valach, Jaroslav
Historical buildings represent invaluable heritage from the past and therefore their protection is a very important task. Assessment of their condition must not cause damage accumulation thus the least possible volume removed from the structure is essential. As many historical buildings in the Czech Republic are built using sandstone that can be considered as a typical heterogeneous system, statistical signal processing is a promising approach for determination of the representative volume element (RVE) dimensions. Such calculations can be carried out on the domain of logical arrays representing binary images of the materials microstructure. This paper deals with processing of image data obtained using SEM-BSE and high resolution flatbed scanner for determination of RVE dimensions. Advanced image processing techniques are employed and results from calculation using grayscale data are presented and compared with results calculated on the basis of color input images.
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Crystallization force of sodium chloride
Koudelková, Veronika ; Wolf, Benjamin
Soluble salts are one of the most deteriorating factor causing damage of historical building materials due to generation of crystallization pressure inside pore space. Direct measurement of crystallization force is quite challenging, hence we developed at our institute a novel device able to detect the force of growing crystal. The device is based on the monitoring of force developed with upper microscopic glass on the growing crystal to maintain constant position. The crystal could generate force because of the existence of thin liquid layer of solution between both surfaces come into contact. The driving force for the subsequent growth of crystal against obstacle is supersaturation, which is mainly induced by evaporation of the salt solution. In this experiment, the crystal of sodium chloride generated force 16.8 mN and the corresponding crystallization pressure was equal to the value 0.48 MPa.
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