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DAŠEK, O. KUDRNA, J. COUFALÍK, P. DAŠKOVÁ, J. HÝZL, P. VARAUS, M. STEHLÍK, D.
Original Title
Rheological Properties of Asphalt Rubber
Type
conference paper
Language
English
Original Abstract
In the last years, asphalt rubber (AR) is being used quite intensively in asphalt mixtures. It is, therefore, necessary to describe the physical-mechanical properties of this highly viscous binder in detail. This paper describes laboratory preparation of ARs with various ambient crumb rubber content. Needle penetration, softening point, dynamic viscosity, resilience and elastic recovery of these binders were than performed, and complex shear moduli and phase angles were determined in a dynamic shear rheometer. In order to describe the effect of high temperature on the AR properties, the binders were kept at a temperature of 180 °C for a period of 72 hours. At specific time intervals binder samples were taken and rheological measurements in DSR performed. Properties of the individual AR binders were then compared with the properties of paving bitumen and polymer modified bitumen. Measuring AR complex shear moduli and phase angles allows monitoring the progress of the reaction (interaction) between paving bitumen and crumb rubber in time. The results could potentially be useful for the development of technologies used to supply asphalt rubber to asphalt mixing plants in bitumen transportation tankers.
Keywords
Crumb rubber; asphalt rubber; rheological properties; dynamic viscosity; complex shear modulus; DSR.
Authors
DAŠEK, O.; KUDRNA, J.; COUFALÍK, P.; DAŠKOVÁ, J.; HÝZL, P.; VARAUS, M.; STEHLÍK, D.
RIV year
2015
Released
4. 10. 2015
Publisher
Locape - Artes Gráficas, Lda.
Location
Las Vegas
ISBN
978-989-20-5949-5
Book
Proceeding Rubberized Asphalt Asphalt Rubber 2015 Conference
Edition
1
Edition number
Pages from
369
Pages to
388
Pages count
19
BibTex
@inproceedings{BUT120050, author="Ondřej {Dašek} and Jan {Kudrna} and Pavel {Coufalík} and Jaroslava {Dašková} and Petr {Hýzl} and Michal {Varaus} and Dušan {Stehlík}", title="Rheological Properties of Asphalt Rubber", booktitle="Proceeding Rubberized Asphalt Asphalt Rubber 2015 Conference", year="2015", series="1", number="1", pages="369--388", publisher="Locape - Artes Gráficas, Lda.", address="Las Vegas", isbn="978-989-20-5949-5" }