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research article

Particle clustering phenomena in hot asphalt mixtures with high content of reclaimed asphalt pavements

Bressi, Sara  
•
Cavalli, Maria Chiara
•
Partl, Manfred N.
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2015
Construction And Building Materials

One challenge in efficient recycling of asphalt concrete is the adherence of the reclaimed asphalt pavement (RAP) particles or clustering that inhibits fulfilling the aggregate gradation requirements. In order to investigate this phenomenon two types of mixtures containing virgin aggregates, bitumen and 50% and 90% RAP were investigated at different mixing temperatures. The formation of clusters in the mixture was verified using rheological properties (DSR) and imaging (ESEM, EDX). The virgin binder in the mixture was detected using imaging techniques by means of a titanium dioxide tracer and it was shown how the virgin binder surrounded the clusters of RAP depending on mixing temperature. (C) 2015 Elsevier Ltd. All rights reserved.

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Type
research article
DOI
10.1016/j.conbuildmat.2015.09.052
Web of Science ID

WOS:000364608000022

Author(s)
Bressi, Sara  
•
Cavalli, Maria Chiara
•
Partl, Manfred N.
•
Tebaldi, Gabriele
•
Dumont, Andre Gilles  
•
Poulikakos, Lily D.
Date Issued

2015

Publisher

Elsevier Sci Ltd

Published in
Construction And Building Materials
Volume

100

Start page

207

End page

217

Subjects

Recycled asphalt

•

RAP

•

Clustering index

•

DSR

•

EDX

•

ESEM

•

Rheology

•

Microscopy

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LAVOC  
Available on Infoscience
February 16, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/123901
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