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Usage of foam bitumen technology
Machel, Ondřej ; Komenda, Radek (referee) ; Hýzl, Petr (advisor)
The diploma thesis deals with the production of warm mix asphalts, using the foam bitumen technology. The thesis is divided into theoretical and practical part. The theoretical part is focused on the basic division of roadway constructions, particularly on warm mix asphalts. The aim of the practical part was to find out whether the produced asphalt mixture retains its functional properties when the operating temperature is reduced. For this purpose, two asphalt mixtures of the ACO 11+ type at operating temperature of 150 °C and reduced operating temperature of 130 °C were made. Functional tests and empirical and functional tests were carried out on the produced asphalt mixtures and the extracted bitumen binders respectively. In the conclusion of the thesis, the results of the tests are mutually compared.
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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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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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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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|
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Usage of foam bitumen technology
Machel, Ondřej ; Komenda, Radek (referee) ; Hýzl, Petr (advisor)
The diploma thesis deals with the production of warm mix asphalts, using the foam bitumen technology. The thesis is divided into theoretical and practical part. The theoretical part is focused on the basic division of roadway constructions, particularly on warm mix asphalts. The aim of the practical part was to find out whether the produced asphalt mixture retains its functional properties when the operating temperature is reduced. For this purpose, two asphalt mixtures of the ACO 11+ type at operating temperature of 150 °C and reduced operating temperature of 130 °C were made. Functional tests and empirical and functional tests were carried out on the produced asphalt mixtures and the extracted bitumen binders respectively. In the conclusion of the thesis, the results of the tests are mutually compared.
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