Features of Technological Aging of Oil Road Bitumen in the Composition of Asphalt Binder
A. A. Stukalov, A. A. Bugaets, V. V. Shablya
Donbas National Academy of Civil Engineering and Architecture
Abstract: The article presents data indicating that the preparation of an asphalt binder by mixing mineral powder with petroleum road bitumen fundamentally changes the process of thermal oxidative aging of bitumen in thin films (less than 160 microns). Bitumen in the «free film» undergoes thermooxidative diffusion of air oxygen to the entire depth of the organic binder film, and bitumen films on the surface of the mineral material undergo thermooxidative aging largely due to the air oxygen involved when mixing the components of the asphalt concrete mixture. To minimize technological aging processes, it is necessary to prevent air diffusion into bitumen and into the asphalt mixer, and in order to increase resistance to thermal-oxidative aging, it is advisable to modify petroleum road bitumen with polymers, in particular, styrene-butadiene-styrene rubber.
Keywords: viscous road bitumen, technological aging, thermo-oxidative aging, weight loss, mineral powder, asphalt binder.
Pages: 104-107.
Link for citation: Stukalov, A. A.; Bugaets, A. A.; Shablya, V. V. Features of Technological Aging of Oil Road Bitumen in the Composition of Asphalt Binder. – Text : electronic. – In: Proceeding of the Donbas National Academy of Civil Engineering and Architecture. – 2022. – Issue 2022-1(153) Modern building materials. – Р. 104-107. – URL: https://donnasa.ru/publish_house/journals/vestnik/2022/2022-1(153)/st_14_stukalov_bugaez_schablya.pdf (date of access: 15.10.2024). (in Russian)
Issue 2022-1 (153)Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture