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Bituminous mixture desing with the use of 30 % reclaimed asphalt and its functional evaluation
Horáček, Daniel ; Šperka, Pavel (referee) ; Kudrna, Jan (advisor)
The aim of my bachelor thesis is to design asphalt mixture with a higher lifetime (mixture of type VMT 16) and its subsequent assessment by selected functional tests. VMT blends are used for load and underlayer layers of roads with higher transport loads. The main idea of this bachelor thesis is the design of an asphalt mixture consisting of natural aggregates, recycled asphalt mixtures and crumb rubber modified bitumen, yet retaining good road-holding properties. The use of recyclable bituminous mixtures will allow the recycling of bent or milled asphalt layers, which is currently high in surplus, and will allow the overall cost of building new high-quality asphalt layers to be reduced. The bachelor thesis describes the empirical and functional tests performed, according to which the resulting asphalt mixture was designed, and the results compared with the TP151 Asphalt mixture with high modulus of stiffness (VMT).
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Stone mastic asphalts with recycled materials - bituminous binders properties
Dzurková, Veronika ; Coufalíková, Iva (referee) ; Hýzl, Petr (advisor)
The bachelor thesis is focused on the issue of adding R-material to stone mastic asphalt mixtures (SMA). The material was obtained from a plant that put the mixture in the test section on the road II/227. The theoretical part describes the problems of recycling of asphalt roads, bituminal binder theory and problems associated with the addition of R-material to hot asphalt mixtures. Bituminal binders from mixtures with different percentages of R-material were extracted in the practical part. Empirical and functional tests were performed on these binders. The aim of the thesis is to determine the influence of the presence of R-material on SMA asphalt mixture in terms of properties of asphalt binder.
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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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Skid resistance of asphalt layers with recycled materials
Bambulová, Lucie ; Nekulová, Pavla (referee) ; Hýzl, Petr (advisor)
The diploma thesis deals with the problems of pavement surface skid resistence of wearing course of asphalt mixtures with R-material. Specifically, it is a mixture of type ACO 11 (asphalt concrete for wearing layers). In the theoretical part of the thesis there are dismantled the problems of Antiskid properties of the road surface and recycling of R-material. The practical part is dedicated to the design and laboratory production of the asphalt mixture ACO 11 without admixture of R-material and with content of 38 % R-material. In addition, the results of the measurement of friction coefficient after smoothed for these bitumen mixtures are shown in the work. The aim of the thesis was to determine the influence of the increased content of R-material on the anti-skid properties of the road surface as it is planned to update the standard ČSN EN 13108-1, which will allow the use of up to 40 % R-material into the mixtures of type ACO 11.
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Properties of asphalt mixtures of SMA-type with RAP
Acuna Subia, Luis Carlos ; Hrbek, Kamil (referee) ; Varaus, Michal (advisor)
The aim of the diploma thesis is to verify and compare the properties of bituminous stone mastic asphalt, namely SMA 11S with modified PMB 45 / 80-55 asphalt binder or 50/70 road bitumen binder with rubber granulate. Comparison of properties is performed using functional tests. The thesis is divided into the theoretical and practical part. The theoretical part deals with the familiarization with the use of the SMA mixture, the selected concepts concerning recycling of non-leveled roads are described and described. Attention is paid especially to the recycling of roads in the Czech Republic with an emphasis on hot recycling on the incinerator, which allows increased dosing of Reclaimed Asphalt into asphalt mixtures. In the practical part, the results of the functional tests of the SMA 11S mixture, which have been taken from the test section, are processed and evaluated.
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Recycled material in Stone mastic asphalts
Machel, Ondřej ; Coufalíková, Iva (referee) ; Hýzl, Petr (advisor)
This bachelor thesis deals with the issue of adding s Reclaimed asphalt pavement (RAP) to the wearing courses of asphalt mixtures, particularly of the SMA 11S type. The thesis consists of two parts. The theoretical part is focused on the topic in general and it describes the way it is obtained, stored and used with the help of the hot recycling method. The practical part's focus are two mixtures used for laboratory testing, containing 30 % and 50 % RAP of the SMA type. It includes information about the test section, description of the mixture production and of the tests performed and it provides commentary on their results. Finally, the results are compared with the SMA 11S reference mix without RAP.
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Asphalt recyclated material for base and subbase layers of pavements
Winterová, Karin ; Hýzl, Petr (referee) ; Stehlík, Dušan (advisor)
This bachelor thesis reviews the use of asphalt recyclated material and its application in the base and subbase layers of pavements. In addition to domestic knowledge, a foreign experience with the use of tested material and also covers currently used technologies for the processing of asphalt recyclates into the constructional layers of roads.is presented. Possibile application of asphalt recyclates in the unblemished and coated subbase layer of the road are verified in the practical part
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Recycled material in Stone mastic asphalts
Motl, Vojtěch ; Coufalíková, Iva (referee) ; Hýzl, Petr (advisor)
The Bachelor’s thesis deals with an issue of adding a Reclaimed asphalt pavement (RAP) into surface courses, especially SMA 11S. The thesis is divided into two parts – theoretical and practical. The theoretical part defines the term RAP and explains how to gain RAP and how to use it for a hot recycling at asphalt plants. The practical part deals with the design of asphalt mixture containing 30 % of RAP, the preparation of test specimens, the description of executed tests and the results of those tests. The results are compared with SMA 11S without RAP.
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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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