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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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Usage of of common reclaimed asphalt in asphalt mixtures
Přívara, Jakub ; Coufalíková, Iva (referee) ; Dašek, Ondřej (advisor)
The bachelor thesis is focused on adding of RAP (reclaimed asphalt pavement) to the wearing asphalt courses flexible pavements. Specifically it is SMA 11S asphalt mixture. The theoretical part describes issues of ecology and recycling. The practical part deals with bitumen recovery from SMA mixtures with different added ratios of RAP and assessment of basic empirical and functional tests on the bituminous binder. The verification of properities of modified bituminous binder used in this quality SMA mixtures is also introduced.
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Usage of kevlar fibres in asphalt mixtures
Mazáč, Jan ; Hegr, Zdeněk (referee) ; Hýzl, Petr (advisor)
Diploma thesis deals with topic of using aramid (Kevlar) fibres in road engineering in asphalt mixtures. Theoretical part of thesis is describing characteristics of aramid fibres and their technical usage. Thesis deals with research and application of aramid fibres abroad and also in Czech Republic. Practical part deals with influence of aramid fibres, namely FORTA FI fibres in mixture with modified binder for wearing course. An integral part of this thesis is a description of all methods that were used during the processing of the practical part. In the end of the thesis there are outcomes of tests and theoretical research.
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Usage of recycled material in asphalt surface layers
Malá, Markéta ; Komenda, Radek (referee) ; Hýzl, Petr (advisor)
Diploma thesis deals with adding R - material to the wearing asphalt courses, specifically to the SMA 11S. It has two parts – theoretical and practical. The theoretical part describes using R - material in the recycling of roads, different types of recycling and how is this problem handled in the Czech Republic, the practical part deals with the design of three kinds of asphalt mixtures with different added ratios of R – material, describing empirical and functional tests on the bitumen binder and the designed asphalt mixtures and the results of those tests.
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Rheological properties of asphalt binders
Pěnčík, Michal ; Mondschein,, Petr (referee) ; Hýzl, Petr (advisor)
The Diploma thesis is focused on rheological properties of bituminous binders and mixtures. Above all, it describes the changes of these properties of samples of bituminous binders and mixtures. Those were brought by the process of laboratory aging, since it simulates the changes occurring in the in the real-life conditions. The theoretical part depicts the field of rheology and methods utilized for simulating the ageing of binders and mixtures. The practical part describes the process of preparation of samples and its testing. Firstly, the ageing of bituminous mixture by the means of BSA method (Braunschweiger Alterung) took place, which was followed by preparing the solids for testing the modulus of stiffness and main testing. The rest of the mixture was used for extracting the binder. Tests with the binder were focused on the usage of dynamic shear rheometer (complex shear modulus, dynamic viscosity). The last part of the work is dedicated to the comparison of the outcomes of testing.
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Influence of usage of recycled material on asphalt mixtures functional properties
Šperka, Pavel ; Hegr, Zdeněk (referee) ; Hýzl, Petr (advisor)
Diploma thesis deals with the topic of using recycled material in the production of asphalt mixtures. In the theoretical part the methods of recycling flexible pavement are described and as well as ways in which recycled material is added to asphalt mixtures produced by the stationary hot mix plant. The thesis also deals with the current state of recycled material use in the Czech Republic and the reasons for its possible greater use. The practical part of the thesis studies the effect of using the amount of 20% recycled material to asphalt mixtures of asphalt concrete for wearing course ACO11+, on selected functional properties of these mixtures. It is also investigates the influence of bitumen binder contained in the recycled material, on the final properties in manufactured asphalt mixtures. An integral part of this thesis is a description of all methods that were used during the processing of the practical part. In the end of this thesis there are some results of findings about adding recycled material into asphalt mixtures.
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Usage of recycled materials to asphalt mixtures
Zítka, Patrik ; Kašpar, Jiří (referee) ; Hýzl, Petr (advisor)
This thesis deals with the R-material use in asphalt mixtures. In the theoretical part, different kinds of flexible pavement recycling and ways of adding R-material into asphalt mixtures are discussed. The practical part deals with asphalt layers design and manufacture, specifically for binder course ACL 16+. R-material content in the blends is 0%, 20%, 25% and 30%. EVOTHERM MA3 rejuvenator is used as additive for softening of R-material. Various mixtures are compared based on tests - resistance to permanent deformation, resistance to the effects of water and low temperature properties.
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The issue of increasing the proportion of reclaimed asphalt in asphalt mixtures
Urbanec, Luboš ; Mondschein,, Petr (referee) ; Hýzl, Petr (advisor)
The subject of this Ing. thesis is asphalt mixture with increasing RAP (Reclaimed Asphalt Pavement). The theoretical part defines the terms of recycling and RAP and types of recycling. The practical part is devoted to the production and testing of asphalt mixtures with different volume RAP. The proposed asphalt mixture is asphalt concrete for base layer ACP22 +. Content of RAP in mixtures is 0%, 30%, 50% and 70%. As a special additive to soften the asphalt from RAP is used ingredient STORFLUX. For each mixture are established modulus stiffness of asphalt mixture and determined fatigue characteristics of asphalt mixture. The identified properties are compared for the different representation of RAP.
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Joint sealings of concrete pavements
Doseděl, Jan ; Hýzl, Petr (referee) ; Stehlík, Dušan (advisor)
The findings related to issues of joint sealings of concrete pavements are summarized in this bachelor thesis. The main part of this thesis deals with experimental testing of modified asphalt binder. This asphalt binder was tested at the beginning and at the end of fatigue. The samples of asphalt bitumen were tested by the method of ring and ball, determinativ of needle penetration, elastic recovery and resilince.
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Binders for flexible pavements
Pěnčík, Michal ; Čiháčková, Pavlína (referee) ; Hýzl, Petr (advisor)
The Bachelor`s thesis is focused on binders, which are used in flexible pavements. Firstly, we offer the reader description of different types of bitumen binders, which could be found in nature, and binders produced from petroleum through the process of distillation and further processing. Later on, we focus on the issue of testing these binders. The last part of the work deals with alternative types of binders which could potentially replace traditional bitumen binders.
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