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Belt conveyor for recycle aggregate
Benáček, Richard ; Jonák, Martin (referee) ; Malášek, Jiří (advisor)
This work deals with an issue of a belt conveyor for transporting recycled stones. The goal of this work is finding a constructional solution of the belt conveyor for specific constructional parameters namely transport power, assigned axial distance of dunes and altitude difference. Firstly, this work includes a theoretical part describing the belt conveyor, the basic constructional element and the choice of the constructional elements. Secondly, this work includes the functional calculation of the belt conveyor according to the ISO ČSN 5048 regulation, the determination of basic sizes, the type of propulsion, the construction of tensioning device and the strength calculation for selected parts. Finally, the drawing documentation find attached to the work.
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ELIMINATION OF NEGATIVE PROPERTIES OF CONCRETE INDUCED BY THE USE OF RECYCLED AGGREGATES USING BASALT FIBERS
Fittl, David ; Nováková, Iveta (referee) ; Bodnárová, Lenka (advisor)
The thesis summarises information about recycled aggregates and basalt fibres, their interaction in composite material such as concrete. It focuses on the potential deficiencies and properties of concrete due to the use of recycled aggregates and on the possibilities of their subsequent elimination of their negative impact by the use of basalt fibres. It characterizes individual raw materials and their interaction in concrete. It includes verification of the properties of the individual sub-components and the resulting concrete itself. An assessment is made of the impact of the use of recycled aggregates on the properties of concrete (compresive strength, static modulus of elasticity, residual flexure tensile strength and others). The thesis discusses the question of whether the same or similar mechanical properties of concrete can be achieved with natural and recycled aggregates using basalt reinforcing fibres. The work provides for the possibility of settlement the values of these concrete parameters by using basalt fibres as a dispersed reinforcement in concrete. The recycled aggregates come from concrete company JARO AS in the north of Norway, where this work was conducted with the financial support from Erasmus+ at The Arctic University of Norway - campus Narvik.
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Belt conveyor for recycle aggregate
Ludva, Jan ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
The aim of this bachelor work is to make functional calculations, determining the main dimensions, design of the drive, drawing of the conveyor assembly and tension frame weldment assembly station. The conveyor is designed for transport of recycled aggregates in oblique direction. The challenge is to find a design solution for the axial distance 39 m, height difference of 7.5 m and transport capacity 65,000 kg·h-1. The work includes basic division, description of the main parts, the choice of structural components, functional calculations according to ČSN ISO 5048 conveyor belt. Further strength calculation casing, shaft pulley and calculate of the compression spring tensioning station. The work is also accompanied by drawings.
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Mobile Machineries Used for Modification of Agregates and Recycled Materials from Building Waste
Turčinek, Andrej ; Horsák, Milan (referee) ; Škopán, Miroslav (advisor)
This bachelor's thesis deals with the problem of selection of a new crusher for a smaller recycling company and the comparison of the old variant of the production line with the new one thanks to the increasing part of recycling in the construction industry. In the introduction, this is a general overview of the technological line, the requirements for aggregates and types of crushers. The actual work consists in acquainting with a specific technological line for the treatment of the construction waste, the selection of suitable substitution for this line and the subsequent comparison of the old and the new variant. As it is a relatively new industrial sector with rapid development, the main benefit of the thesis is the outline this industry sphere in 2017.
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Belt conveyor for recycle aggregate
Macek, Tomáš ; Škopán, Miroslav (referee) ; Malášek, Jiří (advisor)
This work deals with design of belt conveyor for transport of recycled aggregate. The first part of the work thesis describes the belt conveyor and gives an overview of manufacturers of belt conveyors. In the next part there is a functional calculation according to ISO ČSN 5048 is performed from the specified parameters, which are the length of the conveyor, the height difference and transport performance. Further, there is the design of the individual components of the belt conveyor is made. In the last part, there is the strength control of the driven drum and the driven drum axis is performed. Work is completed with drawing documentation.
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Study of durability of concrete with recycled concrete and brick
Voráč, Jiří ; Hela,, Vlastimil (referee) ; Hela, Rudolf (advisor)
This bachelor thesis deals with issues of recycled concrete. The theoretical part describes the process of recycling the construction and demolition waste and describes requirements for recycled aggregate and recycled concrete in Czech republic and some of the member states of EU. The experimental part is focused on design of concrete with a substitution of coarse aggregate with a recycled concrete and brick aggregate.
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Belt conveyor for recycle aggregate
Motloch, Martin ; Kašpárek, Jaroslav (referee) ; Malášek, Jiří (advisor)
The goal of this bachelor thesis is creation of a functional calculation, determination of the main dimensions, design of the drive and stress analysis of drive shaft for the driven drum of belt conveyor for recycled aggregates. Furthermore, the thesis contains description of each part of the belt conveyor, which were chosen from catalogs of companies dealing with production of these parts, or determined on the basis of the calculation.
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A study of the possibilities of using recycled concrete in the UAE for the production of structural concrete
Lakomá, Karolína ; Novosad, Petr (referee) ; Hela, Rudolf (advisor)
The thesis focuses on verifying the possibilities of utilizing recycled concrete aggregates originating from demolitions in the United Arab Emirates (UAE) in structural concretes for ready-mix concrete technologies. The theoretical part summarizes knowledge in the field of recycled concrete aggregates, their preparation, and production. It outlines the standard requirements for the UAE, the Czech Republic and globally. Additionally, it describes the influences of recycled aggregates on fresh and hardened concrete. The goal of the experimental section was to verify the resulting properties of natural and recycled aggregates. Moreover, the thesis addresses the formulation design for reference and recycled concretes. Tests for both fresh and hardened concrete were conducted based on these formulations. This work compares the achieved results with those obtained in another study from the Czech Republic which is also focused on the use of recycled concrete. Furthermore, an economic analysis comparing the prices of reference and recycled concretes on 1 m3 is conducted within the experimental section.
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Inclined belt conveyor of aggregates
Zavadil, Milan ; Malášek, Jiří (referee) ; Škopán, Miroslav (advisor)
The aim of this work is the design of helical conveyor belt for transport of building stone and recycled aggregate with a maximum grain size of 150 mm. Work includes a characteristic of some parts of the conveyor functional calculation, determine the key dimensions and design of power according to ISO 5048. Further strength calculation was carried out certain parts of the conveyor and assembly drawn in overall conveyor subassembly and stretching equipment.
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