Structural performance and sustainability assessment of cold central-plant and in-place recycled asphalt pavements: A case study


This paper aimed at assessing the structural performance and sustainability of cold recycled asphalt pavements. Four cold recycling technologies were investigated, including the cold central-plant recycling with emulsified and foamed asphalt binders (i.e., CCPR-E and CCPR-F), and the cold in-place recycling with emulsified and foamed asphalt binders (i.e., CIR-E and CIR-F). Firstly, the laboratory tests were conducted to comprehensively evaluate the dynamic modulus, rutting, and cracking performance of cold recycled asphalt mixtures. Subsequently, these laboratory results were used to determine the inputs of cold recycled asphalt mixtures for the Pavement ME Design program, which was employed to predict the pavement performance. Meanwhile, the National Center for Asphalt Technology also constructed four cold recycled pavement sections in the field. The monitored and predicted pavement performance showed similar trends in the first two years, but the Pavement ME Design program over predicted the rut depth of these sections. The pavement performance results confirmed that the bottom-up fatigue cracking was a negligible distress mode for cold recycled asphalt pavements. In the following, the life cycle cost analysis and life cycle assessment were conducted to evaluate the four different cold recycling projects. The life cycle cost analysis results demonstrated that all of the four cold recycling projects yielded less net present values than the HMA project. The life cycle assessment data indicated that the cold recycling technologies reduced the energy consumption by 56–64%, and decreased the greenhouse gas emissions by 39–46%. Finally, this study found that the overlay and asphalt treated base thicknesses and climatic conditions had significant impact on the performance of cold recycled asphalt pavements.

Publication DOI:
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Aston Logistics and Systems Institute
College of Engineering & Physical Sciences > Aston Institute of Materials Research (AIMR)
Additional Information: © 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Uncontrolled Keywords: Cold recycling,Field performance,Laboratory testing,Structural assessment,Sustainability,Renewable Energy, Sustainability and the Environment,Environmental Science(all),Strategy and Management,Industrial and Manufacturing Engineering
Publication ISSN: 1879-1786
Last Modified: 20 May 2024 07:25
Date Deposited: 26 Oct 2018 12:47
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Related URLs: http://www.scie ... 959652618332487 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2019-01-20
Published Online Date: 2018-10-22
Accepted Date: 2018-10-21
Authors: Gu, Fan
Ma, Wangyu
West, Randy C.
Taylor, Adam J.
Zhang, Yuqing (ORCID Profile 0000-0001-5825-0131)

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