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City within the City / "Trnitá City Block"
Solár, Michal ; Hybská, Bohumila (referee) ; Nový, Vítězslav (advisor)
The area of today's southern center of Brno was determined from the very beginning by the location of the rivers Svratka, Svitava and their drives, which defined the southern part of the city as a fertile area suitable for cultivation. After the advent of industrialism, the city transformed rapidly. The southern area was transformed from smaller villages into industrial units, which, due to the proximity of water and the newly established railway, expanded after 1838 to the entire vicinity of the Trnitá district. Already in this period, the location of the station by the Svratka River (in the proposed position from 2016) began to be considered, but due to the waterlogged soil and difficult construction conditions, it was decided for the station under the walls. It was this decision and the unsatisfactory conditions of waterlogged land for the development of the industrial area closer to the Svratka River that caused the suspension of the development of the southern suburbs. The proposal seeks to reflect the context of Brno's apartment buildings in the vicinity of the area, which lacks a comprehensive context and scale. At the same time, however, to solve the environmental problem by proper management of rainwater or the use and design of a recycled perimeter cladding of material obtained after the demolition of other buildings. The building is structurally designed as a combination of a wall system with monolithic, communication cores and the first floor.
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The influence of regranulate on structure and properties of high density polyethylene
Handlíř, Tadeáš ; Poláček, Petr (referee) ; Bálková, Radka (advisor)
The presented diploma thesis deals with the evaluation of the influence of the addition of 30, 60 and 90 % of recycled material on the structure and mechanical properties of high-density polyethylene (HDPE), where recycled material represents both HDPE from a several years old part and material multiple reprocessed by extrusion. The changes of supramolecular structure were examined by calorimetric measurement, which did not indicate degradation of the material due to multiple extrusion. Mechanical properties were investigated by tensile tests and dynamic-mechanical analysis. Both measurements showed the same trend, where the first and second pass of the material through the extruder led to improved mechanical properties, e.g. to increase stiffness, while the influence of the third and fourth passes through the extruder had not a significant effect on the mechanical properties. In terms of the structure and mechanical properties, a positive effect of the combination of material after the second extrusion passing (30%) with virgin material was recorded.
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Particle Polymer Composite in structural details of the building envelope
Dostálová, Darina ; Lavický, Miloš (referee) ; Vokoun,, David (referee) ; Matějka, Libor (advisor)
Due to a European energy concept for reducing energy consumption and also the concept of sustainable development, there is a growing demand for reduced energy consumption during the operation of the building and hence increasing demands on the thermal and mechanical properties of the building envelope. For this reason, it is necessary to look for materials that could meet both thermal and mechanical properties, as well as mechanical resistance and loadability, especially for the application for the foundations of the house, the base of the house and for application to structural details for elimination of the thermal bridges between interior and exterior boundaries. The main motivation for choosing the topic of thesis was to find materials derived from recycled or secondary raw materials that would be suitable for manufacturing composite applicable for structural details in the envelope of the building and for insulating in humid environment. An economic and environmental aspect plays an important role in the choice of material. The main theme of the thesis is the laboratory manufacturing of a composite with a thermoplastic matrix derived from recycled plastic materials and waste foam as a phase. Has been developed a unique Waste-based Particle Polymer Composite (WPPC) made from recycled foam and polypropylene. However, before WPPC can be reliably used by construction designers, physical properties of WPPC must be accurately identified. Therefore, it was designed laboratory manufacturing system and sample testing system, it was studied thermal, mechanical, thermomechanical and moisture absorptivity of WPPC. Application of finished composite material with satisfying thermal insulation properties to structural details to eliminate the thermal bridge, was the next step. These are details of the unloaded, prefabricated balconies, windows, atics, as well as basement constructions and the heel of the central load-bearing wall, the terrain flooring and the staircase wall
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The influence of regranulate on structure and properties of high density polyethylene
Handlíř, Tadeáš ; Poláček, Petr (referee) ; Bálková, Radka (advisor)
The presented diploma thesis deals with the evaluation of the influence of the addition of 30, 60 and 90 % of recycled material on the structure and mechanical properties of high-density polyethylene (HDPE), where recycled material represents both HDPE from a several years old part and material multiple reprocessed by extrusion. The changes of supramolecular structure were examined by calorimetric measurement, which did not indicate degradation of the material due to multiple extrusion. Mechanical properties were investigated by tensile tests and dynamic-mechanical analysis. Both measurements showed the same trend, where the first and second pass of the material through the extruder led to improved mechanical properties, e.g. to increase stiffness, while the influence of the third and fourth passes through the extruder had not a significant effect on the mechanical properties. In terms of the structure and mechanical properties, a positive effect of the combination of material after the second extrusion passing (30%) with virgin material was recorded.
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City within the City / "Trnitá City Block"
Solár, Michal ; Hybská, Bohumila (referee) ; Nový, Vítězslav (advisor)
The area of today's southern center of Brno was determined from the very beginning by the location of the rivers Svratka, Svitava and their drives, which defined the southern part of the city as a fertile area suitable for cultivation. After the advent of industrialism, the city transformed rapidly. The southern area was transformed from smaller villages into industrial units, which, due to the proximity of water and the newly established railway, expanded after 1838 to the entire vicinity of the Trnitá district. Already in this period, the location of the station by the Svratka River (in the proposed position from 2016) began to be considered, but due to the waterlogged soil and difficult construction conditions, it was decided for the station under the walls. It was this decision and the unsatisfactory conditions of waterlogged land for the development of the industrial area closer to the Svratka River that caused the suspension of the development of the southern suburbs. The proposal seeks to reflect the context of Brno's apartment buildings in the vicinity of the area, which lacks a comprehensive context and scale. At the same time, however, to solve the environmental problem by proper management of rainwater or the use and design of a recycled perimeter cladding of material obtained after the demolition of other buildings. The building is structurally designed as a combination of a wall system with monolithic, communication cores and the first floor.
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Posouzení vlivu použitého dřeva na vlastnosti třískových desek
Ďurovec, Juraj
Thesis describes the construction and testing of particle boards, where these boards are made in combination with the recycled wood and chips. In the production of boards we had been using different ratio of the recycled wood and chips. According to the standards, we have created a test samples of the boards and they are subsequently tested for selected properties. Measured results are statistically compared between themselves.
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Particle Polymer Composite in structural details of the building envelope
Dostálová, Darina ; Lavický, Miloš (referee) ; Vokoun,, David (referee) ; Matějka, Libor (advisor)
Due to a European energy concept for reducing energy consumption and also the concept of sustainable development, there is a growing demand for reduced energy consumption during the operation of the building and hence increasing demands on the thermal and mechanical properties of the building envelope. For this reason, it is necessary to look for materials that could meet both thermal and mechanical properties, as well as mechanical resistance and loadability, especially for the application for the foundations of the house, the base of the house and for application to structural details for elimination of the thermal bridges between interior and exterior boundaries. The main motivation for choosing the topic of thesis was to find materials derived from recycled or secondary raw materials that would be suitable for manufacturing composite applicable for structural details in the envelope of the building and for insulating in humid environment. An economic and environmental aspect plays an important role in the choice of material. The main theme of the thesis is the laboratory manufacturing of a composite with a thermoplastic matrix derived from recycled plastic materials and waste foam as a phase. Has been developed a unique Waste-based Particle Polymer Composite (WPPC) made from recycled foam and polypropylene. However, before WPPC can be reliably used by construction designers, physical properties of WPPC must be accurately identified. Therefore, it was designed laboratory manufacturing system and sample testing system, it was studied thermal, mechanical, thermomechanical and moisture absorptivity of WPPC. Application of finished composite material with satisfying thermal insulation properties to structural details to eliminate the thermal bridge, was the next step. These are details of the unloaded, prefabricated balconies, windows, atics, as well as basement constructions and the heel of the central load-bearing wall, the terrain flooring and the staircase wall
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