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Bituminous mixture for wearing course with increased content of reclaimed asphalt
Spies, Karel ; Šperka, Pavel (referee) ; Kudrna, Jan (advisor)
The bachelor thesis deals with design of asphalt mixture for wearing course, by performing functional tests according to ČSN EN 12697 (736160) Bituminous mixtures - Test methods for hot asphalt mixtures and comparison of its properties with asphalt concrete for wearing course (ACO 11 +) according to ČSN EN 13108-1 ed. 2 (736140) Bituminous mixtures - Specification for materials - Part 1: Bituminous concrete. The proposed layer is characterized by a high (50%) reclaimed asphalt pavement content (RAP) and the use of a crumb rubber modified bitumen (CRMB) without the use of rejuvenators or other softening additives. The aim of the work is to verify the expected properties of the asphalt mixture and point out the possibility of using larger amounts of reclaimed asphalt pavement in asphalt mixtures.
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Asphalt concrete with reclaimed material - design
Kučerová, Marcela ; Koudelka, Tomáš (referee) ; Varaus, Michal (advisor)
Bachelor thesis is focused on the design and testing of asphalt mix type asphalt concrete containing R-material. The theoretical part is dedicated to the RAP in asphalt mixtures produced by hot, in particular the specifics during design and manufacture of asphalt mixture. Next there is introduced further information relating to the functional characteristics of asphalt mixtures and the influence of R-material on them. The practical part describes the designs and testings on mixtures ACO 11+ and 11+ 50% RAP. In order to compare the proposed mixtures were carried out tests of low thermal attributes according to ČSN EN 12697-46 and cracking using uniaxial tensile test according to ČSN EN 12697-46.
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Functional tests on mixtures of the test section with asphalt concrete and high amount of RAP
Kučerová, Marcela ; Zajíček, Jan (referee) ; Varaus, Michal (advisor)
The diploma thesis is focused on the testing of asphalt mixtures of asphalt concrete containing reclaimed asphalt and laying of the test section. The theoretical part deals with the use of reclaimed asphalt in hot asphalt mixtures, namely the specifics of rejuvenating agents, aging and asphalt mixture. Further more information on the functional properties of asphalt mixtures and the influence of reclaimed asphalt on them is given. The practical part describes testing of mixtures of ACO 11+ and ACO 11+ with 50% reclaimed asphalt and tests on asphalt binders. In order to compare the proposed mixtures, the low thermal properties of ČSN EN 12697-46 and the stiffness modules according to ČSN EN 12697-26. In the last part of the diploma thesis the results of the measured values were compared with each other in order to determine of asfphalt recovery. From the overall test results, it can be seen that the effect of the rejuvenating agent was positive. However, the desired degree of rejuvenation has not been achieved after production.
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Foam asphalt mixtures
Brtníková, Tereza ; Komenda, Radek (referee) ; Hýzl, Petr (advisor)
The diploma thesis is divided into theoretical and practical part. The theoretical part is mainly focused on methods for reducing the working temperature in the production of hot mix asphalt and the main reasons for this. Most attention is paid to the warm mix asphalt, mainly foam asphalt technology. In practical part are describes working procedures of individual tests on asphalt mixtures and recovered bitumen binders. The tests were performed on 3 types of ACO 11+, one was made with working temperature 160°C without foamed bitumen and the other two with foamed bitumen,one with working temperature 160°C and the second 140°C. Then were the results compared.
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Construction Project for Station of Fire and Rescue Services in Jaroměř
Nývlt, Josef ; Liška, Pavel (referee) ; Nečasová, Barbora (advisor)
The objective of this diploma thesis is the processing of the construction technology design as a part of the preparation and implementation of the fire station in Jaroměř. It is a new construction of the main building, which is supplemented by other objects and engineering buildings. The thesis deals with complex design of the implementation of the construction and then focuses in more detail on the installation of the supporting frame structure, which consists of reinforced concrete prefabricated elements. The whole project also includes a technical report on the construction technology project, a study of the implementation of the main technological stages of the main building, solutions for transport routes for construction supply, construction site design, machine set design, technological regulations with assembly diagrams, control and test plan, time plans and balance of resource needs, itemized budget and occupational safety and health plan. The diploma thesis is supplemented by a specialized part dealing with the reconstruction of the area road with a bituminous cover and the implementation of other paved areas within the area of the fire station.
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Coarse graded asphalt mixtures
Mucha, Ondřej ; Dašek, Ondřej (referee) ; Hýzl, Petr (advisor)
The bachelor’s thesis is focused on asphalt mixtures that contain coarser aggregates than currently allowed by technical regulations in the Czech Republic. The introductory part of the work describes the composition of asphalt mixtures, their division and use. Further deals with foreign experience with these types of asphalt mixtures and their use in the surrounding European countries and in the United States of America. The aim of this work is to obtain a theoretical overview of knowledge about coarse graded asphalt mixtures from foreign sources and research.
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Recycling of asphalt mixtures with standard amount of RAP
Staňková, Michaela ; Koudelka, Tomáš (referee) ; Varaus, Michal (advisor)
The diploma thesis deals with the design of an asphalt mixture for an abrasive layer with a standard R-material content (20 %) without the use of other softening additives, while the properties of the aged asphalt binder in the mixture were compensated by dosing "softer binder 70/100". Asphalt mixtures type ACO 11+ are designed to meet the requirements ČSN 73 6121: 2019. The aim of the work is to verify the expected properties of the asphalt mixture performed functional and empirical tests according to the standards for asphalt mixtures of the ČSN EN 12697 series.
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Warm Mix Asphalt Using Technology of Foam Bitumen
Machel, Ondřej
Nowadays, more and more attention is paid to the environment protection. The issues of the environment protection are obviously related to road engineering as well. Asphalt pavements are used in the majority of road constructions. When producing these mixtures, it´s necessary to reach high temperatures, which is energetically demanding and at the same time there are impacts on the environment. In order to reduce the negative effects as much as possible, there are efforts to reduce working temperatures while keeping the properties of the mixtures. The result is the so–called Warm Mix Asphalt – WMA. The aim of this article is to introduce basic methods for reducing working temperatures with a focus on the foam bitumen technology and its use in the Czech Republic.
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Use of R-material in asphalt mixtures with PMB type binder
Navrátilová, Pavlína ; Dašek, Ondřej (referee) ; Hýzl, Petr (advisor)
The diploma thesis is focused on the use of R-material in asphalt mixtures with a PMB type binder. The work is divided into a theoretical part and a practical part. The theoretical part describes the acquisition of R-material by road milling, the use of R-material, the binder used in the practical part of the work and the types of recycling. The practical part deals with the design of four types of asphalt mixtures with different content of R-material in the asphalt mixture. It also deals with the description of functional tests of asphalt mixtures and the results of these tests.
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Construction Project for Station of Fire and Rescue Services in Jaroměř
Nývlt, Josef ; Liška, Pavel (referee) ; Nečasová, Barbora (advisor)
The objective of this diploma thesis is the processing of the construction technology design as a part of the preparation and implementation of the fire station in Jaroměř. It is a new construction of the main building, which is supplemented by other objects and engineering buildings. The thesis deals with complex design of the implementation of the construction and then focuses in more detail on the installation of the supporting frame structure, which consists of reinforced concrete prefabricated elements. The whole project also includes a technical report on the construction technology project, a study of the implementation of the main technological stages of the main building, solutions for transport routes for construction supply, construction site design, machine set design, technological regulations with assembly diagrams, control and test plan, time plans and balance of resource needs, itemized budget and occupational safety and health plan. The diploma thesis is supplemented by a specialized part dealing with the reconstruction of the area road with a bituminous cover and the implementation of other paved areas within the area of the fire station.
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