Publication detail

Rheological Properties of Asphalt Rubber

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

1

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"
}