National Repository of Grey Literature 77 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Influence of aging on selected properties of asphalt binders
Rimel, Jindřich ; Dašek, Ondřej (referee) ; Hýzl, Petr (advisor)
In this bachelor’s thesis, the properties of four asphalt binders with different degree of modification are compared. The influence of aging on their properties is examined. In the theoretical part, the types of aging, their impact on binders, basic laboratory methods of aging and the details of performed tests are explained. In the practical part, the results of tests are evaluated and the change of properties before and after aging are compared.
Use of recycled building materials to urban pavement constructions
Průdková, Hana ; Hýzl, Petr (referee) ; Stehlík, Dušan (advisor)
This bachelor thesis describes the possibilities of construction and demolition waste management. It examines the issue of allocation and management of this waste and evaluates possibilities of their further use. It deals with production and use of recycled materials in construction of urban roads and economic advantage of recycled materials in comparison to natural aggregates. This work also discusses the issue of aerated concrete, as a modern building material, that will soon appear in construction and demolition waste to a greater extent. The practical part examines properties of mixed recyclates with a certain amount of brick and aerated concrete particles by testing the bulk density of grains and water absorption, freezing and thawing resistance and crushing resistance.
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.
Evaluation of properties of PMB containing binder from RAP
Měšťanová, Petra ; Hýzl, Petr (referee) ; Dašek, Ondřej (advisor)
Subject of this diploma thesis is to describe the effect of adding different amount of aged binder recovered from RAP on the change of properties of polymer modified bitumen. The RAP containing unmodified bitumen and the RAP where we can expect bitumen modification are used to recover binder. The binder obtained from RAP is dosed into the virgin binder in amount of 15 %, 30 % and 50 %. The methods of recycling of flexible pavements, extraction and regeneration of asphalt binders, rejuvenating of their properties and methods of empirical and functional laboratory tests are described in the theoretical part. The practical part deals with evaluating and comparison of the results mixed binders properties.
Waste building material to subgrade pavement
Masař, Daniel ; Hýzl, Petr (referee) ; Stehlík, Dušan (advisor)
The theoretical part of the diploma thesis searches the production of Construction and demolition waste and their subsequent transformation into the final recyclate and its possible use in roads. Attention is focused on the use of mixed recycled material into subgrade of the pavement and the characteristics of tests that must be performed before its used to the road. The next chapters pai attention to the problematic properties of recyclates, foreign experience with the use of mixed recyclate in Construction and the possibilities of its development. The practical part verifies the suitability of mixed recycled material into subgrade of the pavement using laboratory tests. The tests are performer on individual mixtures of mixed recycled material with cement, blast furnace slag or cement dust in various percentages. The results are then compared and it is evaluated which mixtures show the best properties. Part of the practical part is also the economic evaluation of these mixtures against commonly used materials.
Usage of polymer modified bitumens and rejuvenators in asphalt mixtures
Maláník, Stanislav ; Hýzl, Petr (referee) ; Dašek, Ondřej (advisor)
Diploma thesis deals with the influence of various dosing of Reclaimed asphalt pavement (RAP) using modified bitumen on the properties of asphalt concrete (ACO 11+) of cemented by polymer modified bitumen, while a rejuvenating agents are added into asphalt mixtures. The theoretical part of the thesis summarizes the basic knowledge of pavement recycling, polymer modified bitumens and their reuse in asphalt mixtures. The practical part deals with laboratory tests of ACO 11+ mixtures with the RAP proportion of 0 % to 50 %. The asphalt mixtures compared are evaluated by means of the Thermal Stress Restrained Specimen Test (TSRST) and Stiffness test. The results obtained within the diploma thesis can approximate the issue of recycling of asphalt mixtures with polymer modified bitumens.
Use of R-material in asphalt mixtures with highly modified binder (HiMA)
Christ, Roman ; Dašek, Ondřej (referee) ; Hýzl, Petr (advisor)
The subject of this diploma thesis is paid attention to the influence of different dosing of R-material containing unmodified asphalt on the properties of asphalt concrete for abrasive layers (AC011 +) bonded with polymer highly modified asphalt (binder type HiMA). The properties of asphalt mixtures will be evaluated by means of the stiffness modulus test and the test of low-temperature properties by a uniaxial tensile test.
Possibility of mixing PMB RC type binders with reclaimed binder from RAP
Trnka, Lukáš ; Dašek, Ondřej (referee) ; Hýzl, Petr (advisor)
The diploma thesis deals with the possibility of mixing binders of the PMB RC type with a binder made of reclaimed ashalt. lists the types of asphalt binders, its production and modification are in the teoretical part. There is explained the principle of rejuvenators function, types of rejuvenators. The procedures for performing tests on asphalt binders: recovery of asphalt binder, needle penetration, softening point (ring and ball method), reversible ductility, breaking point (according to Fraass) and DSR. Individual tests are evaluated and asphalt mixtures are compared in the practical part of asphalt binder. The diploma thesis deals with the possibility of mixing binders of the PMB RC type with a binder made of reclaimed ashalt. lists the types of asphalt binders, its production and modification are in the teoretical part. There is explained the principle of rejuvenators function, types of rejuvenators. The procedures for performing tests on asphalt binders: recovery of asphalt binder, needle penetration, softening point (ring and ball method), reversible ductility, breaking point (according to Fraass) and DSR. Individual tests are evaluated and asphalt mixtures are compared in the practical part of asphalt binder.
Asphalt Layers using Fibreglass Composite Materials
Sadil, Dominik ; Hýzl, Petr (referee) ; Šperka, Pavel (advisor)
The diploma thesis deals with using of reinforcing composite materials in asphalt layers. These geosynthetic materials are in road construction used especially to reduce spreading cracks and extend the service life of the construction. As par of this work, test specimens of different types of asphalt layers were produced. These samples were subjected to laboratory testing, where the results of different reinforced asphalt slabs were compared. Within the diploma thesis primarily deals with the testing of the shear bond strength between asphalt layers in order to determine what are the other influencing factors of the test. Another part of the thesis is the 4-point bending test, during which a special technology in the form of a DIC camera was used to monitor the behavior of the asphalt layer over time.
Using Reclaimed Asphalt Pavement in High Modulus Asphalt Mixture for Binder Asphalt Courses
Klimek, Matěj ; Hýzl, Petr (referee) ; Šperka, Pavel (advisor)
The bachelor thesis deals with design of high modulus asphalt mixture with using 30 % reclaimed asphalt pavement in combination with polymer modified bitumen. The goal of this thesis is to verify if the mixture reaches the requirements of technical regulations TP 151 [1]. Selected tests were performer in accordance with the European standards ČSN EN 12697 Bituminous mixtures – Test methods for hot asphalt mixtures. Theoretical part of my thesis is focused on possibilities of addition higher amounts of reclaimed asphalt pavement into asphalt mixtures.

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