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New lightweight floors with secondary raw materials
Tůmová, Eva ; Bydžovský, Jiří (referee) ; Ďurica,, Tibor (referee) ; Kolář,, Karel (referee) ; Drochytka, Rostislav (advisor)
The thesis deals with the development of new type of lightweight floors based on secondary raw materials. In the introduction, the current knowledge in the field of lightweight building materials, especially screeds and lightweight porous concrete, is presented. The thesis describes brief history of production of aerated concrete and its development up to the present. Further, the thesis describes the procedure of design and testing of new lightweight materials for use in floors. The proposed recipe has been thoroughly tested and the best combination of components for use in lightweight porous concrete floor screed has been selected. The thesis also examines the microstructure of the material being developed. The main result of the dissertation is the developed product, which is already used in practice and is produced and sold on the market as part of the system of lightweight building materials.
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Social housing, Brno
Krbylová, Alžbeta ; Krupica, Roman (referee) ; Sátora, Josef (advisor) ; Petříček, Tomáš (advisor)
The project of social housing in Brno – city part of Malomerice, is especially aimed at Roma community as well as other families with more members. Designed objects are situated along the borders of site to create semiprivate space for playing and community action in proposed community centre. Houses are designed to accomplish owner´s demands as it creates the diversity of terraced houses. The base of every design is unit (distinguished by gable roof) with entry space, staircase, technical and hygienic core. According to wishes, there were created number and location of rooms (with mono-pitched roof). Therefore in detailed house, there are rooms for up to 10 people with open kitchen and living room. Within the incorporation of minority community to society and improvement of their starting position in labour market it is taking into account with construction of dwellings by their owners with supervision under experienced craftsmen. Due to their simplicity and availability as main material for construction were chosen aerated concrete blocks YTONG. Façade is mostly made of basic white plaster with ability of choosing the colour in part with gabled roof.
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The design of ETICS using insulation core made of aerated concrete
Machala, David ; Zach,, Jiří (referee) ; Drochytka, Rostislav (advisor)
This thesis deals with theoretical suggestions of contact self-supporting insulation system with an insulating core made of porous concrete. The text prepared knowledge about ETICS system, the properties of porous concrete are thoroughly described, including the history and the most often used technology for production of porous concrete. The conclusion is made by comparison of economical and thermal insulation criteria using optimizing calculation and the applicability criteria of proposed ETICS are stated.
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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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Design of a technological line for recycling autoclaved aerated concrete
Bajzík, Martin ; Bojanovský, Jiří (referee) ; Skryja, Pavel (advisor)
The diploma thesis is focused on the design of a production line for processing waste material from autoclaved aerated concrete production. The introduction of the thesis describes the current situation with aerated concrete waste processing, it´s characteristics, raw materials used for the production and the production technology. The theoretical part of the thesis reviews the crushing process and the equipment used in mineral processing lines such as: crushers, mills, separators and conveyors. In the practical part of the thesis the focus is on the design of the production line, selection of the equipment, mass balance and economical evaluation of the investment.
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Sports and cultural centre, Otradov
Myška, Jan ; Nováková, Eva (referee) ; Kolář, Radim (advisor)
The subject of this diploma thesis is the preparation of project documentation for the implementation of new sports and cultural centre Otradov. The dominant feature of the complex objects stands and multipurpose hall. The building is architecturally designed with an effort to fit in too much of rural architecture. Multipurpose hall has two floors, one third roofed flat roof, two-thirds of the roof ridge. The core system is aerated concrete blocks. The building is two-storey grandstand with the carrier deck. Roofing is solved by means of broken wooden beams. Sanitary facilities is dealt wall system and roofed shed roof. Athletics track, the surface of the polyurethane mixture designed for sports.
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Development of new technology of sand autoclaved aerated concrete with using of secondary raw materials
Ondříčková, Pavlína ; Suchý, Peter (referee) ; Drochytka, Rostislav (advisor)
Autoclaved sand aerated concrete is a modern building material with high thermal insulation properties. Only sand is used as the primary silicate component of aerated concrete in the Czech Republic. For the more favourable economic and ecological properties of aerated concrete, the use of secondary raw materials is used in this work. The secondary raw materials examined included fluidized bed and fly ash, slag and glass recycled. The aerated concrete composite with secondary admixtures was developed under hydrothermal conditions of a laboratory autoclave for 7 and 12 hours at 190°C. From the secondary raw materials tested, a 10% glass recycler additive yielded the highest strength. Other additives that have a positive effect on mechanical properties include SAKO and Oslavany. From the results of the work it is evident that the use of secondary raw materials increases the strength, improves the rheology of the mixture and supports the formation of tobermorite.
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The technology of aerated concrete
Koutný, Ondřej ; Repka, Martin (referee) ; Opravil, Tomáš (advisor)
Civil engineering is integral part of industry in each developed country. Naturally the construction point does not play the main role here, but also the material of building segments. In last fifty years the new possibility has been discovered against classic brick in form of autoclaved aerated concrete. This material gathers its customers not only due to low weight and easy application with sufficient strength, but particularly due to excellent heat-insulation properties. Contemporary trend in research of aerated concrete points to application of alternative raws, as for example metakaoline, to improve final properties of product by preserving of current technology and price.
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Energy-efficient elementary art school building
Šplíchalová, Kateřina ; Uher, Pavel (referee) ; Rubinová, Olga (advisor)
The aim of this Master's thesis is to design an energy-efficent primary art school in Dolní Bučice. The thesis is divided into three parts. In the first part, an architectural and construction design of the building is carried out. The building has two above-ground floors. The structure features a flat roof with photovoltaic panels. The ground floor includes a teacher's office, classrooms, a changing room, a technical room, a concert hall, and related facilities for performers. The second floor includes, teacher's offices, classrooms, and a small kitchen. The load-bearing envelope walls are design from aerated concrete blocks, while the internal load-bearing walls are made of acoustic limestone sand blocks. The floor and roof structures are reinforced concrete monolithic or made of prefabrica-ted ceiling elements. In the second part, the concept of HVAC systems is proposed. Water supply, heating and cooling are provided by a four ground-source heat pumps. The building is mechanically ventilated by three air-handling units located in the technical room situated on the first floor. The building is connected to the existing water supply system and sewage. Electricity is generated by photovoltaic panels or drawn from the power grid. The third part focuses on the functionality and analysis of photovoltaic panels related on an existing building. The work is based on data from the Malina mobile application. The research compares actual data with supplier data and focuses on the return on investment.
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Application of foaming agents for the production of lightweight materials
Kramná, Adéla ; Vyšvařil, Martin (referee) ; Rovnaník, Pavel (advisor)
Use of lightweight building materials came to forefront in recent decades. The most commonly used materials are aerated and foam concrete but also other materials such as foamed geopolymer have been introduced. This study examines foaming methods of various lightweight building materials which are analysed and evaluated in terms of properties in hardened state. An effect of foaming agent on the structure of the material and its porosity was examined by image analysis using an optical microscope.
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