Experimental and Statistical Analysis of Bitumen’s Field Ageing in Asphalt Pavements


Field ageing gradients of bitumen samples recovered from 14 asphalt road sections were investigated via rheological and chemical characterizations and statistical analysis. The effects of air voids and environmental factors on the ageing gradient were evaluated using the field ageing and climate data. The effectiveness of the pressure ageing vessel (PAV) test was assessed in accelerating the bitumen’s long-term ageing by comparing with the field ageing data. Critical factors for field ageing were identified using statistical methods. A statistical model for the Glover-Rowe (G-R) parameter was formulated and verified by incorporating the screened key factors. Results indicate that a threshold air void content (around 6%) exists in differentiating the field ageing gradient patterns in the asphalt pavements. An increasing tendency is observed between the ageing gradient and annual days below 0°C. The chemical indices, stiffness-related indices, and G-R parameter can quantify the field ageing gradient of asphalt pavements. The PAV test can condition the bottom slices’ bitumen to the same ageing level as that in a pavement depth of 0.5–2 cm after 8 years’ field service. Pavement service life, binder content, minimum temperature, days above 32°C, and days below 0°C are the critical material and environmental factors that significantly affect bitumen’s complex shear modulus, crossover frequency, G-R parameter, and Δ Tc. The statistical model is verified with an acceptable mean absolute error of 28.1% and a R2 value of 0.95.

Publication DOI: https://doi.org/10.1177/03611981221079823
Divisions: College of Engineering & Physical Sciences > Aston Institute of Urban Technology and the Environment (ASTUTE)
College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Civil Engineering
College of Engineering & Physical Sciences > Aston Institute of Materials Research (AIMR)
College of Engineering & Physical Sciences
Additional Information: This article is distributed under the terms of the Creative Commons Attribution 4.0 Lficense (https://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
Uncontrolled Keywords: Asphalt binder aging,Binders,Chemistry,Infrastructure,Materials,Performance tests,Rheological properties,Civil and Structural Engineering,Mechanical Engineering
Publication ISSN: 2169-4052
Last Modified: 06 Dec 2023 12:05
Date Deposited: 08 Apr 2022 10:38
Full Text Link: 10.1177/03611981221079823
Related URLs: https://journal ... 611981221079823 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2022-07
Published Online Date: 2022-03-17
Accepted Date: 2022-03-01
Authors: Zhang, Hanyu
Soenen, Hilde
Carbonneau, Xavier
Lu, Xiaohu
Robertus, Carl
Zhang, Yuqing (ORCID Profile 0000-0001-5825-0131)



Version: Published Version

License: Creative Commons Attribution

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