Energy dissipation and rheological property degradation of asphalt binder under repeated shearing with different oscillation amplitudes

•Fatigue feature of asphalt binder depends on the magnitude of fatigue loads.•The variation of complex modulus is not always lead to obvious energy dissipation.•The meanings of transition points between different stages of DE curves are explained.•DER and CDER are not suitable for identifying the fa...

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Bibliographic Details
Published in:International journal of fatigue 2021-11, Vol.152, p.106417, Article 106417
Main Authors: Zhang, Zeyu, Oeser, Markus
Format: Article
Language:English
Subjects:
Amplitudes
Asphalt
Asphalt binder
Binders (materials)
Energy dissipation
Evolution
Fatigue damage
Fatigue failure
Fatigue failure criteria
Materials fatigue
Rheological properties
Rheology
Shearing
Time sweep test
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Summary:•Fatigue feature of asphalt binder depends on the magnitude of fatigue loads.•The variation of complex modulus is not always lead to obvious energy dissipation.•The meanings of transition points between different stages of DE curves are explained.•DER and CDER are not suitable for identifying the fatigue failure of asphalt binder. Time sweep test with four oscillation amplitudes was conducted to investigate the energy dissipation behavior and rheological property evolution of asphalt binder under repeated shearing. It was found that the energy dissipation behavior and rheological property evolution strongly depend on the oscillation amplitudes of fatigue loads and can both be majorly separated into two types. Variations in dissipated energy (DE) were related to the different damage modes of asphalt binder. In addition, the fatigue failure criteria derived from DE were evaluated. The dissipated energy ratio and cumulative energy ratio are not suitable for identifying fatigue failure point of asphalt binder.
ISSN:0142-1123
1879-3452
DOI:10.1016/j.ijfatigue.2021.106417