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The utilization of the pavement waste materials to roads
Furdaničová, Alice ; Šperka, Pavel (referee) ; Stehlík, Dušan (advisor)
The diploma thesis deals with the use of recycled asphalt with aggregate in a hydraulically bound mixtures. The mixture is determined in the base or sub-base course of the pavement. The theoretical part of the diploma thesis describes the base course of the pavement, the production of recyclates from construction demolition waste, the acquisition and processing of recycled asphalt, the road reuse and recycling. The thesis is enriched by a contribution from the implementation of recycled asphalt laying into the base course of the communication company SKANSKA a.s. and ČNES a.s. The next chapter describes detailed experiences with recycling abroad. The thesis also contains a description of laboratory tests, which are important for evaluating the properties of mixtures with recycled asphalt. The practical part verifies the suitability of the mixture of recycled asphalt and aggregate for the road surface by testing the transverse tensile strength, compressive strength and frost and water resistance. The mixtures used are found to be suitable for pavement base course.
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Waste building materials to base layers of the pavements
Žďára, Zbyněk ; Hýzl, Petr (referee) ; Stehlík, Dušan (advisor)
This bachelor thesis is divided into two parts, theoretical and practical. In the theoretical part, there is processed information about recycled construction waste and their possible use in road construction in the form of research. The individual chapters deal with the description of these materials, their production, their use in base layers of the pavement and attention is also paid to their problematic features and foreign experience. In the practical part, laboratory samples of recycled asphalt pavement and recycled aggregates were tested. The main purpose was to find out if it was possible to use a mixture of recycled asphalt pavement and recycled aggregates in the base layers of the pavement with a low traffic load. Another purpose was to compare the properties of mixtures with different content of both recycled materials and to see how the bearing capacity of these mixtures changes when an elevated temperature is applied to them.
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Entry module of processing line for ozonic deterioration of tyres
Slezák, Jan ; Veselý, Oldřich (referee) ; Koutný, Daniel (advisor)
The aim of this diploma thesis is making design of device for setting tyres into the machine for ozone deterioration of tyres with following parametres: tyre size 295/80 R22,5, deployment profile of tyres, its foundation into the machine and sealing ozone atmosphere. The first part of this thesis contain research retailing to issues of tyre. After that there si presented design, which is completely making in programme Autodesk Inventor 2010. Calcutations are making in programme Mathcad 14 and deformation load, mainly construction, is making in programme Ansys 12.1. Finally there is making drawings.
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Recycling of bituminous binders by using recycling agents
Koudelka, Tomáš ; Komačka,, Jozef (referee) ; Dašek, Ondřej (referee) ; Varaus, Michal (advisor)
Increasing the content of Reclaimed Asphalt in hot asphalt mixtures is one of the current issues in road construction, to which society's attention is paid. The higher content of Reclaimed Asphalt brings higher technological demands not only for the production of asphalt mixture plants, but also for the handling of materials in general. The benefit for higher demands on asphalt mixture production is the subsequent reduction of the environmental burden associated with the construction of road infrastructure caused by the mining industry and use of natural resources. The dissertation is focused on studying recycling agents which are used in the production of asphalt mixtures containing Reclaimed Asphalt. Emphasis is put on comparing the properties of recycled binders with paving bitumen and binders from Reclaimed Asphalts whereas the effect of repeated recycling is taken into account. A large part of the thesis is devoted to the design of the optimal dosage of recycling agents. Certain findings were used to draw a methodology describing the design of dosing of these agents. At the same time, the properties and behaviour of the recycling agents themselves were evaluated.
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Types of packaging and their representation in municipal waste
Kostková, Kateřina ; Kropáč, Jiří (referee) ; Pavlas, Martin (advisor)
The bachelor thesis deals with the types of packaging materials, related legislation and the use of packaging in practice. The research part of the work presents individual types of materials and their characteristics. An important part of waste treatment is the recycling and utilization of packaging waste. The work presents different recycling principles for individual materials. The practical part analyzes the individual representation of packaging materials of selected consumer products.
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Study of the influence of polyethylene terephthalate recycling on the quality of the resulting recyclate
Mach, Jakub ; Řezáčová, Veronika (referee) ; Kučerík, Jiří (advisor)
Plastics and recycling of plastics is a frequently discussed topic. The output of sythetic polymers is rising exponentially every year. In accordance with the sustainable development, development of effective recycling techniques enabling to process these huge amounts of waste and convert it back into useful material is essential. The aim of this work was to study qualitative effects of production methods, various types of recycling processes and degree of degradation of polyenthylene terephtalate on results of differential scanning calorimetry (DSC) analysis. In experimental part, analyzes of 62 regranulates of recycled PET were performed. The samples from various manufacturers differed (manufacturers use different technologies) in terms of mechanical and physico-chemical properties or additives. The results confirmed that the properties of recycled PET have an impact on thermophysical properties recorded using DSC. A simple DSC run enables distinguishing a number of fundamental qualitative properties of PET, in particular crystallinity, melting point and enthalpy, temperature and enthalpy of crystallization and glass transition temperature and in this work we show that their mutual relationship enables to estimate the quality of recycled material and the possibilities of its further use.
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The influence of the location of buildings on price and cost of a building
Petr, Lubomír ; Výskala, Miloslav (referee) ; Aigel, Petr (advisor)
The thesis deals with the influence of the location of buildings on the price and the cost of a building. In the first theoretical part it deals with brownfields, redevelopment of geological environment and construction and demolition waste. In this passage the various concepts, their division, the legislative side of things and generally their problems are explained. The second part is practical, it analyzes the cost associated with the revitalization of abandoned buildings for the possibility of reuse of land. For these purposes the representative brownfield is created and it is set in different environment. In conclusion all important findings are summarized.
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Waste treatment in the Czech Republic
Janík, Prokop ; Turek, Vojtěch (referee) ; Bělohradský, Petr (advisor)
This bachelor thesis deals with the waste management in the Czech Republic and the possibilities how these wastes can be processed. In present period the waste production is tightly connected with the running of society. Waste and all the problems associated with their production and processing are delicate issue of present period. This is linked to technology developments and environmental quality in this field. Wastes are generated in both production and consumption of each product and conceal large quantity of raw materials and energy. Therefore, the biggest problem lies in finding the way in which energy and these raw materials are recovered and reused.
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The influence of environmental conditions of the recycling of solar modules
Langer, Filip ; Vaněk, Jiří (referee) ; Jandová, Kristýna (advisor)
This thesis is focused on experiments, goal of which is to separate protective glass apart from thin layer solar panel. This could lead to less expensive and more efficient recycling. We try to achieve the separation of the glass by thawing ethylene vinyl acetate layer, which serves as insulant and bonding material. Experiments are concluded in high temperature dryer and high temperature vacuum oven on samples of thin layer solar panel, which is for the purposes of experiments cut into same pieces by water jet cutting machine. The initiatory experiments in dryer and oven are to determine value of ethylene vinyl acetate thaw point in tested samples of panel. The thaw point is determined to be 340 °C. When exposed to this temperature, the ethylene vinyl acetate thaws enough for glass to be able to be extracted with minimal physical strength. The process is accompanied by fire destruction of tedlar layer and creation of exhaust gases. Following experiments in vacuum and nitrogen environment are to test their influence on thawing process. Exposing sample to temperature of 340 °C in vacuum led to no new results. Exposing sample to temperature of 340 °C in nitrogen environment prevented fire and achieved same level of thawing of ethylene vinyl acetate while creating less exhaust gases. Even though the fire was prevented, tedlar layer was still destroyed by the high temperature. Furthermore, particles of evaporated ethylene vinyl acetate condensed on surface of module in form of dust. Following experiments studied absorption of panel and influence of accessible solvents on thawing process. It was determined that panel is able to absorb approximately 2 % of acetone, 0,4 % of isopropyl alcohol and 0,11 % of distilled water in its own weight. Experiments with modules soaked in these solvents proved no new results in thawing process. By observing samples of ethylene vinyl acetate taken from module, thawed out of module after experiment in vacuum oven and dust condensed on surface of module after experiment in nitrogen environment, it was proven that the condensed dust is indeed ethylene vinyl acetate.
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