Aging of Rejuvenated Asphalt Binders
Joint Authors
Ali, Hesham
Mohammadafzali, Mojtaba
Musselman, James A.
Sholar, Gregory A.
Rilko, Wayne A.
Source
Advances in Materials Science and Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-08-07
Country of Publication
Egypt
No. of Pages
13
Abstract EN
An important concern that limits the RAP content in asphalt mixtures is the fact that the aged binder that is present in the RAP can cause premature cracking.
Rejuvenators are frequently added to high RAP mixtures to enhance the properties of the binder.
There is no existing method to predict the longevity of a rejuvenated asphalt.
This study investigated the aging of rejuvenated binders and compared their durability with that of virgin asphalt.
Various samples with different types and proportions of RAP, virgin binder, and rejuvenator were aged by RTFO and three cycles of PAV.
DSR and BBR tests were conducted to examine the high-temperature and low-temperature rheological properties of binders.
Results indicated that the type and dosage of the rejuvenator have a great influence on the aging rate and durability of the binder.
Some rejuvenators make the binder age slower, while others accelerate aging.
These observations confirm the importance of evaluating the long-term aging of recycled binders.
For this purpose, critical PAV time was proposed as a measure of binder’s longevity.
American Psychological Association (APA)
Mohammadafzali, Mojtaba& Ali, Hesham& Musselman, James A.& Sholar, Gregory A.& Rilko, Wayne A.. 2017. Aging of Rejuvenated Asphalt Binders. Advances in Materials Science and Engineering،Vol. 2017, no. 2017, pp.1-13.
https://search.emarefa.net/detail/BIM-1124897
Modern Language Association (MLA)
Mohammadafzali, Mojtaba…[et al.]. Aging of Rejuvenated Asphalt Binders. Advances in Materials Science and Engineering No. 2017 (2017), pp.1-13.
https://search.emarefa.net/detail/BIM-1124897
American Medical Association (AMA)
Mohammadafzali, Mojtaba& Ali, Hesham& Musselman, James A.& Sholar, Gregory A.& Rilko, Wayne A.. Aging of Rejuvenated Asphalt Binders. Advances in Materials Science and Engineering. 2017. Vol. 2017, no. 2017, pp.1-13.
https://search.emarefa.net/detail/BIM-1124897
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1124897