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research article

International Journal of Pavement Engineering

Bressi, Sara  
•
Bueche, Nicolas  
•
Dumont, André-Gilles  
2015
International Journal of Pavement Engineering

This paper evaluates the variability of binder rheology for different ageing levels and the influence of ageing at different testing temperatures. Three different ageing levels were applied on a single type of bitumen with a penetration grade of 70/100.The artificial ageing of the binder was performed using the rolling thin-film oven test and the pressure ageing vessel. The rheological behaviour was investigated at low temperatures with the bending beam rheometer (BBR) and at medium and high temperatures with the dynamic shear rheometer (DSR). Several experiments were conducted to determine the range of stiffness and complex modulus results, the type of distribution comparing real and theoretical models, and the effects of ageing on the variability of the rheological behaviour. It was shown that not only the mean results from BBR and DSR tests change with ageing, but also the variability of the results changes with ageing. This would have an impact on mechanistic-empirical pavement design because it would influence the calculated stresses and strains as well as the calculated reliability.

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Type
research article
DOI
10.1080/10298436.2014.993197
Web of Science ID

WOS:000371595500003

Author(s)
Bressi, Sara  
•
Bueche, Nicolas  
•
Dumont, André-Gilles  
Date Issued

2015

Publisher

Taylor & Francis Ltd

Published in
International Journal of Pavement Engineering
Volume

17

Issue

5

Start page

403

End page

413

Subjects

binder

•

probability distribution

•

ageing

•

bending beam rheometer

•

mechanistic-empirical

•

pavement design

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LAVOC  
Available on Infoscience
April 16, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/113375
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