Viscoelastic Analysis of the Damping Asphalt Mixtures (DAMs) Made with a High Content of Asphalt Rubber (AR)

Damping asphalt mixtures (DAMs) have been developed to resist vibration and noise caused by traffic loads, and the ultimate design goal in this process is to increase damping. However, while optimizing its damping characteristics, the viscoelastic properties are not yet clear. In the present study,...

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Bibliographic Details
Published in:Advances in civil engineering 2020, Vol.2020 (2020), p.1-12
Main Authors: Huang, Jiandong, Sun, Yuantian
Format: Article
Language:English
Subjects:
Aggregates
Asphalt mixes
Asphalt pavements
Civil engineering
Damping
Design
Fatigue
Mechanical properties
Mechanical tests
Noise
Physical properties
Quality of life
Rubber
Stiffness
Traffic
Vibration
Viscoelasticity
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Summary:Damping asphalt mixtures (DAMs) have been developed to resist vibration and noise caused by traffic loads, and the ultimate design goal in this process is to increase damping. However, while optimizing its damping characteristics, the viscoelastic properties are not yet clear. In the present study, two DAMs are designed based on the open-graded (OG) aggregate structure, and the viscoelastic properties are evaluated subsequently by the dynamic mechanical testing. The results show that the proposed mix-design method for DAMs can meet the mechanical requirements specified in the standards; DAMs are detected to have higher phase angle and lower stiffness modulus compared with traditional mixtures, and the antifatigue performance is excellent but resistance to rutting may face challenges.
ISSN:1687-8086
1687-8094
DOI:10.1155/2020/8826926