New Methodology to Characterize the Workability of Asphaltic Concrete Mixtures Based on Kinematic Compaction Energy

Ali Jamshidi; Greg White; Mohd Rosli Mohd Hasan

doi:10.3390/su14116550

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New Methodology to Characterize the Workability of Asphaltic Concrete Mixtures Based on Kinematic Compaction Energy

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New Methodology to Characterize the Workability of Asphaltic Concrete Mixtures Based on Kinematic Compaction Energy

Ali Jamshidi, Greg White and Mohd Rosli Mohd Hasan

Sustainability, Vol.14(11), pp.1-18

2022

DOI: https://doi.org/10.3390/su14116550

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Abstract

compaction energy

conservation energy

hot mix asphalt

kinematic densification energy

warm mix asphalt

workability

The workability of asphalt mixtures influences the logistical processes and workmanship during pavement construction. There are various methods for analyzing the workability of asphaltic concrete mixtures. However, there is a lack of user-friendly laboratory methods that enable asphalt technologists, pavement engineers, laboratory technicians, and researchers to characterize the trend of workability via Newtonian physics. In this paper, a new methodology, based on momentum theory, has been proposed to evaluate the effects of construction temperature and compaction aid additives on mixture workability. Additionally, a new parameter, namely, the kinematic densifying index (KDI), is defined by the energy conservation theory. The results indicate a linear relationship between compaction energy and bulk specific gravity, which proportionally influence the indirect tensile strength of the mixtures. An adverse correlation between the KDI and the compaction energy index (CEI) was detected. The trend of the KDI strongly depends on the mixing temperature and the additive content. In conclusion, in the future, the KDI can be recommended as a supplementary indicator to analyze the workability of asphalt mixtures. More research is required to correlate the KDI and the other workability indicator for various aggregate gradations and binder types.

Details

Title: New Methodology to Characterize the Workability of Asphaltic Concrete Mixtures Based on Kinematic Compaction Energy
Authors: Ali Jamshidi (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Greg White (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Mohd Rosli Mohd Hasan (Corresponding Author) - Universiti Sains Malaysia
Publication details: Sustainability, Vol.14(11), pp.1-18
Publisher: MDPI AG
Date published: 2022
DOI: 10.3390/su14116550
ISSN: 2071-1050
Copyright note: Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)
Organisation Unit: University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99649177102621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Environmental Sciences; Environmental Studies; Green & Sustainable Science & Technology