Tran-SET 2020
The Use of Reclaimed Asphalt Pavement Materials and Warm-Mix Asphalt Mixtures in the South-Central States: Challenges and Limitations
Publication: Tran-SET 2020
ABSTRACT
Nowadays, reclaimed asphalt pavement (RAP) is becoming more popular in producing new asphalt mixtures since it is a cost-effective and environmentally-friendly approach. However, there are some negative impacts of using RAP in new mixtures, especially with high RAP content. Previous studies show that the mixtures containing high RAP content have poor fatigue and cracking performance. Warm-mix asphalt (WMA) technologies are used to counter the negative effects of RAP on cracking resistance of asphalt mixtures. In this paper, the current specifications used in the south-central states (i.e., Arkansas, Louisiana, New Mexico, Oklahoma, and Texas) and previous regional studies conducted on the use of RAP and WMA technologies are discussed. Based on these specifications, an overview of the challenges and limitations of producing mixtures containing high RAP content and WMA technologies is presented. The objective is to identify deficiencies that currently exist in these specifications toward the implementation of these technologies.
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ACKNOWLEDGMENT
The authors would like to thank Tran-SET (Project No: 19BLSU01) for funding this research. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the funding agency.
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Information & Authors
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Tran-SET 2020
Pages: 185 - 194
Editors: Craig Newtson, Ph.D., New Mexico State University, Susan Bogus Halter, Ph.D., University of New Mexico, and Marwa Hassan, Ph.D., Louisiana State University
ISBN (Online): 978-0-7844-8330-5
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© 2021 American Society of Civil Engineers.
History
Published online: Jan 12, 2021
Published in print: Jan 12, 2021
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