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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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Belt conveyor for recycle aggregate
Bezrodný, Roman ; Jonák, Martin (referee) ; Malášek, Jiří (advisor)
This bachelors thesis deals with the issue of belt conveyor for transportation of recycled aggregates in an oblique direction. In this thesis a functional calculation of the belt conveyor is performed according to given parameters, the determination of main dimensions is made, design of the drive and approximate strength calculation of the shaft of the driven drum. The work contains a brief description of the belt conveyor, its main parts and the choice of the structural elements. Further work includes drawing documentation, which is attached to it.
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Possibilities of using recycled aggregates for the production of structural concrete
Hrachovcová, Ludmila ; Brožovský, Jiří (referee) ; Hubáček, Adam (advisor)
The bachelor thesis deals with the study of recycled aggregates and concretes made from them. Nowadays, more and more emphasis is being placed on recycling waste and especially construction and demolition waste. Therefore, we are looking for ways to use recycled aggregates in concrete composites despite heterogeneous parametres of concrete and brick recyclates. The paper summarizes the existing knowledge about recycled aggregates, especially about brick and concrete recyclates, their parameters and possibilities of their use. Furthermore, the thesis deals with brick and concrete recyclate concretes, their parameters and behaviour and their subsequent use in practice.
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Circular economics in construction
Tatarin, Tomáš ; Marek, Martin (referee) ; Krejza, Zdeněk (advisor)
The goal of this bachelor thesis Circular Economy in Construction is to map the sources of primary raw materials and the production of recyclates in the context of construction production and to perform a price and geographical analysis. The extension of the principles of circular economy is set in the context of the now widespread linear economy. The bachelor thesis is divided into two parts. The theoretical part deals with the analysis of the circular economy and the possibilities of recycling construction waste. The practical part then analyses the current state of production of minerals key to the construction industry, the current production of construction recyclates, the possibilities of increasing recycling and increasing the applicability of the essence of the circular economy. The paper concludes with a summary of the results of the analysis and possible improvements.
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Study of the possibilities of using coarse aggregates from recycled concrete for the production of structural concrete
Voráč, Jiří ; Novosad, Petr (referee) ; Hela, Rudolf (advisor)
The master thesis is focused on the possibilities of using coarse recycled concrete aggregate as a substitution for coarse natural aggregate in structural concrete. Theoretical part of this thesis presents a literature review on the recycled concrete aggregate, mainly its production and use in structural concrete. Emphasis is placed on standards in Czech Republic, Europe and other countries of the world. Influence of recycled concrete aggregate on fresh and hardened concrete are also described. Experimental part is dedicated to determination of basic mechanical properties of recycled concrete aggregate and natural aggregate. Recycled concrete formulas and reference concrete formulas are also proposed. Proposed concrete mixes are subjected to tests for fresh and hardened concrete. The price of concrete mixes per 1 m3 is also described.
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