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Quantitative assessment of the parameters linked to the blending between reclaimed asphalt binder and recycling agent: A literature review

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2020
ResearchGateversion.pdf (849.9Kb)
Authors
Orešković, Marko
Menegusso Pires, Gustavo
Bressi, Sara
Vasconcelos, Kamilla
Lo Presti, Davide
Article (Accepted Version)
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Abstract
The lack of understanding the mechanisms governing the interaction between reclaimed asphalt binder (RAb)1 and recycling agents is one of the technical issues that still need to be resolved when high amount of reclaimed asphalt (RA)2 is used in a new recycled asphalt mixture (RAM). Due to important role of RAb in that interaction and increased used of RA, it becomes necessary to have a way to classify RA, as any other material used in asphalt mixture production. It is very important to determine how much RAb is active by itself (DoA)3, but also to determine how much RAb can be considered available for a mix design of RAM (DoAv)4 when a recycling agent is used. Finally, since that RAM’s properties are strongly dependent on the degree of blending between RAb and recycling agent (DoB)5, it should evaluate to what extent RAb contributes to the final properties of RAM. These blending parameters (DoA, DoAv and DoB) are so crucial that identifying suitable methodologies for their assessment w...ould be extremely important in performing a proper mix design due to dangerous of having a lack of active bitumen in RAM. This paper presents a literature review of methods which have been used for the evaluation and assessment of mentioned parameters, grouped in four macro-areas: mechanical, chemical, visualization and mechanistic approaches. Furthermore, summarized review of used methods was prepared together with their critical review, all with aim to find appropriate methods for determining these parameters.

Keywords:
Reclaimed asphalt pavement / Recycled asphalt mixture / Degree of blending / Degree of binder activity / Degree of binder availability / Hot mix asphalt / Warm mix asphalt
Source:
Construction and Building Materials, 2020, 234
Publisher:
  • Elsevier
Projects:
  • Utilization of by-products and recycled waste materials in concrete composites in the scope of sustainable construction development in Serbia: investigation and environmental assessment of possible applications (RS-36017)

DOI: 10.1016/j.conbuildmat.2019.117323

ISSN: 0950-0618

WoS: 000514748700002

Scopus: 2-s2.0-85074302843
[ Google Scholar ]
5
4
URI
http://grafar.grf.bg.ac.rs/handle/123456789/1770
Collections
  • Катедра за путеве, аеродроме и железнице
Institution
GraFar

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