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Construction Technological Project of a Heat Feeder in South Bohemia
Handlíř, Jan ; Hejl, Martin (referee) ; Mohapl, Martin (advisor)
The subject of the diploma thesis is a technological construction project of heat feeder on the hot water pipeline between České Budějovice and nuclear power plant Temelín. The main object is an industrial hall made of steel and brick administrative part. The hall is a steel structure clad with sandwich panels. The administrative part is single-storey building from bricks and has a flat roof. The construction also includes an access road with car park.
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DESIGN OF NON-DESTRUCTIVE METHOD FOR TESTING OF STEEL FIBER REINFORCED CONCRETE
Komárková, Tereza ; Steinbauer,, Miloslav (referee) ; Maňas,, Pavel (referee) ; Anton, Ondřej (advisor)
The doctoral thesis deals with a non-destructive testing method (NDT) designed to evaluate the uniformity of distribution and determination of the concentration of steel fibres in steel fiber reinforced concrete (SFRC). At present, no non-destructive method is available in the field of diagnostics of building structures to assess the concentration and the homogeneity of SFRC. The Institute of Building Testing (SZK FAST BUT Brno) has several diagnostic devices, but their utility for the evaluation of selected parameters of SFRC has not proven during the research activity. This knowledge led to the design of a new measuring instrument in cooperation with the Institute of Theoretical and Experimental Electrical Engineering of the Faculty of Electrical Engineering and Communication (UTEE FEKT BUT in Brno) and the methodology for evaluation of these parameters. The proposed NDT method has been experimentally tested and verified for its utility for the evaluation of SFRC in building practice.
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Development and use of non-destructive testing methods from the point of view of forensic engineering
Bílek, Petr ; Vala, Jiří (referee) ; Vodička, Jan (referee) ; Hobst, Leonard (advisor)
Concretes reinforced by, using distributed steel reinforcements (fibres) are known as fibre-concrete. In case of disturbances or accidents of concrete structures reinforced with wires, it is necessary to carefully examine the actual implementation of dispersed reinforcement. Fibre concretes belong to modern building materials whose possible applications have not been fully utilized so far. Have been mainly used for floor structures loaded with factory halls and warehouses. Recently, thanks to well-known physical and mechanical properties of fibre-concrete, there were numerous attempts of designers, and namely investors, to utilize this kind of materials for support structures either. Favorable properties of wire-concrete can be utilized if there is a necessity to increase the resistance of concrete to stresses exceeding its strength, cyclic stress or impact stress. Daily practice shows to prove that the applications of fibre-concrete in such structures lead to the economic success. Necessary condition for successful application of steel fiber reinforced concrete in constructions however consists in its uniform dispersion, a homogeneous distribution of the wires throughout the volume of the structure. In case of inappropriate processing and deposition of the mixture during the manufacturing process fiber-concrete structures, the fibers are often unevenly distributed. Wires itself represent unfavourably shaped mixture components and they are extremely deteriorating its workability. A grouping of wires may be encountered as well, which reduces the overall homogeneity and the quality of steel fiber-concrete structures. If the homogeneity of fibre-concrete is not kept, the material possess different properties in various parts of the structure (for example, tensile strength), which can lead to defects in the structure (generation and development of cracks). The relevant lower reliability of the structure which is caused by unequal distribution of fibres (wires) in concrete volume can lead to damage of the property as well as the safety and the human lives can be jeopardized. Hence it is necessary to secure the effective control of the fibre-concrete homogeneity in ready support fibre-concrete structures. Contemporary homogeneity control is still ongoing on fresh blends, but if the fibre-concrete hardened and is a part of the construction, no known reliable methods are currently in available to test the homogeneity of the fibre-concrete on the structure without its destruction. The methods developed to control the concentration of wires in wire-concrete structures are based mostly on magnetic or electromagnetic properties of wires. The thesis deals with the development of the magnetic method in situ using permanent magnets for monitoring the distribution of fibers in hardened steel fiber-concrete structures. The test principle is based on measurements of the changes in magnetic field strength of permanent magnets which are induced by a change in wire distribution in steel fibre-concrete structure. Test is characterized as a so called local- failure- test using a small diameter core drill. In this sense it is a semi-destructive method.
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Production hall MONTGAS - realization of the gross substructure
Kurka, Jan ; Selník, Petr (referee) ; Vlčková, Jitka Laura (advisor)
The bachelor thesis deals with the realization of the gross substructure of the new production hall of the company MONTGAS a.s. in Hodonín on the street U Kyjovky. Part of this technological phase is the realization of earthworks, driven gravel FRANKI piles, driven reinforced concrete FRANKI piles, cast-in-place reinforced concrete foundation pads, sills and strip foundations, soil slab, base layers and reinforced concrete floors of the building including steel fibre reinforced concrete slab and cast-in-place reinforced concrete structure of the paint shop inside the production hall. It also includes damp proof layer and insulation of foundation structures. The content of this work is the technology of earthworks and all piles in the form of technological regulation. Construction costs are calculated in an itemized budget from student version of the BUILDpowerS software with a bill of quantities. The schedule is drawn up in the form of a schedule from student version of the CONTEC software. Plans are in place to ensure both quality and safety during construction.
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Marginal conditions and their influence in the production of reinforced steel fibres in concrete
Loyková, Markéta ; Řiháček, Jan (referee) ; Císařová, Michaela (advisor)
Constantly increasing demands of customers for the speed of realization of the construction and reduction of all input costs have been reflected in civil engineering by high demand for reinforced steel fibers in concrete. The steel reinforcement has significant role in this composite material. This means that reinforcement (wires) provide the required physicochemical properties to the concrete. It is necessary to pay attention also to the marginal conditions and their influences in the production of wire. In close cooperation with the companies Krampe Harex CZ and Cemex Czech Republic, an analysis of the conditions of the drawing process and subsequent influence of dispersed steel reinforcement on the final product was created. The economic aspects of the production of dispersed steel reinforcement in concrete were also mentioned.
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Construction Project - Implementation of Storage Hall in Zlín
Voráčová, Tereza ; Liška, Pavel (referee) ; Nečasová, Barbora (advisor)
The final thesis is focused on the solution of the building technology project of storage hall in Zlín. This master’s thesis includes engineering report, studies of major technological stages, solution of transport routes, project of site equipment, design of major machines and mechanisms, technological regulations for steel hall and steel fibre reinforced concrete floor, time schedule, control and test plans for steel hall and steel fibre reinforced concrete floor, budget, time and financial plan, assembly schemes for steel hall and floor assembly.
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Prestressed slab structure using SFRC
Herka, Martin ; Panáček, Josef (referee) ; Klusáček, Ladislav (advisor)
This thesis deals with the design and solution of a slab bridge structure. There are two varies considered - prestressed concrete structure and prestressed structure using steel fiber reinforced concrete. The aim of the thesis is to assess a contribution to application of steel fiber reinforced concrete in serviceability limit state and ultimate limit state. At the end of thesis is an evaluation of possibility to design this type of structure from prestressed steel fiber reinforced concrete.
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Verification of actual physical-mechanical parameters of composite material
Jablonská, Markéta ; Žítt, Petr (referee) ; Láník, Jaromír (advisor)
Diploma thesis deals with composite materiál and it is dedicated to steel fiber concreat. The thesis focuses on verification of mechanical parameters of the steel fiber concrete. Especially on the compressive (tensile) strength at first cracking and the compressive strength in cracked state. Testing was conducted on concrete different tensile with 30 kg on m3 steel fibers KrampeHarex DE 50/1,0 N. The thesis is divided into theoretical and experimental part.
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Construction technological expansion project of sheltered workshop in Trinec
Gwóźdź, Dariusz ; Kopecký, Lukáš (referee) ; Diaz, Yvetta (advisor)
The subject of graduation thesis is a building-technological study of production and warehousing hall and headquarters of Ergon protected workshops in Třinec. The work is prepared on the basis of the project documentation. This consists of 8 building objects( 2 main building objects and 6 engineering objects). Building object SO 01-assembly and warehousing hall will be used for installation of assembly lines for simple mounting of imported parts and for semi automatic painting line equipment. Building object SO 02- headquarters building will be used for social activities of employees (WC. showers, social room , cloak rooms) and office premises. The main aims of graduation thesis are : project of construction site equipment including of time and economical evaluation, time schedule and financial plan for objects, study of main phases of project realisation for objects SO 01 and SO 02, project of main building machines including their radius( reach), time schedule of building object SO 02, technological prescript for steel construction preparation of object SO 01 with control and check plan.
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