Journal Published Online: 05 June 2019
Volume 48, Issue 1

A New Binder-Fast-Characterization-Test Using a Dynamic Shear Rheometer and Its Application for Rejuvenating Reclaimed Asphalt Binder

CODEN: JTEVAB

Abstract

A simple method using a dynamic shear rheometer is proposed for determining high-temperature key parameters of asphalt binders in place of the ring-and-ball softening point, currently used in Germany. The test was recently introduced in the German standards under the name Bitumen-Typisierungs-Schnell Verfahren (BTSV), which translates to Binder-Fast-Characterization-Test. Two key parameters are obtained as the result of the test: the temperature TBTSV, at which the shear modulus is equal to 15.0 kPa, and the corresponding phase angle δBTSV. While TBTSV provides information on material hardness, δBTSV indicates the degree of modification. Based on these two parameters, a classification system is proposed for different asphalt binder grades commonly used in Europe. Additionally, the procedure was applied for rejuvenating aged asphalt binder extracted from reclaimed asphalt pavement (RAP). A linear relation is observed for the two key parameters when blending RAP binder with different proportions of rejuvenator. These findings were used to evaluate the effectiveness of different rejuvenating additives.

Author Information

Schrader, Johannes
Braunschweig Pavement Engineering Centre (ISBS), Technische Universität Braunschweig, Braunschweig, Germany
Wistuba, Michael P.
Braunschweig Pavement Engineering Centre (ISBS), Technische Universität Braunschweig, Braunschweig, Germany
Cannone Falchetto, Augusto
Braunschweig Pavement Engineering Centre (ISBS), Technische Universität Braunschweig, Braunschweig, Germany Department of Civil and Environmental Engineering, Nagaoka University of Technology, Niigata Prefecture, Japan
Riccardi, Chiara
Braunschweig Pavement Engineering Centre (ISBS), Technische Universität Braunschweig, Braunschweig, Germany
Alisov, Alexander
Bayerische Asphalt-Mischwerke, Hofolding, Germany
Pages: 8
Price: $25.00
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Stock #: JTE20180893
ISSN: 0090-3973
DOI: 10.1520/JTE20180893