MATEC Web Conf.
Volume 222, 20183rd International Workshop on Flexibility in Sustainable Construction (ORSDCE 2018)
|Number of page(s)||11|
|Published online||29 October 2018|
Assessment of temperature susceptibility for rubber granulate modified road asphalt binders considering impact of aging
1 Poznan University of Technology, Faculty of Civil and Environmental Engineering, Institute of Civil Engineering, Piotrowo 5, 61-138 Poznań, Poland
2 UTP University of Science and Technology in Bydgoszcz, Faculty of Building, Architecture and Environmental Engineering, Al. Prof. S. Kaliskiego 7, 85-796 Bydgoszcz, Poland
* Corresponding author: firstname.lastname@example.org
The article presents the results of research on temperature sensitivity of ground rubber modified asphalt binders. The tests were performed for 50/70 penetration grade road bitumen and two kinds of granulated rubber: activated and inactivated. Such parameters of asphalt binders as: penetration, softening point, dynamic shear modulus and phase angle have been determined and on this basis the temperature susceptibility of the reference bitumen and asphalt binders modified by activated and inactivated rubber have been determined. All the tests were carried out for three observation levels: without aging and after aging simulations carried out by RTFOT and PAV methods. The tests revealed that addition of granulated rubber has a positive influence on asphalt binder properties, even after the aging process, causing an increase in the softening point and a decrease in penetration and the phase angle of asphalt binder. Asphalt binders obtained in result of modification by addition of rubber show smaller temperature susceptibility than the reference bitumen (without addition of rubber). Also, a positive impact of aging on the temperature susceptibility was observed for the investigated binders.
© The Authors, published by EDP Sciences, 2018
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