Hu, Yongping, Sreeram, Anand, Airey, Gordon D, Li, Bo, Si, Wei and Wang, Haopeng 
ORCID: 0000-0002-5008-7322
(2024)
Comparative analysis of time sweep testing evaluation methods for the fatigue characterisation of aged bitumen
Construction and Building Materials, 432.
p. 136698.
ISSN 0950-0618, 1879-0526
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Hu-2024-Comparative analysis of time sweep tes.pdf - Open Access published version Download (8MB) | Preview |
Abstract
Ageing of bitumen changes its stiffness related properties and is thought to have a considerable impact on its fatigue performance. Time sweep tests are a commonly used methodology to evaluate the fatigue performance of bitumen over the course of its lifetime. This study comparatively evaluated the fatigue performance of six aged bitumen samples using various commonly employed time sweep testing-based approaches, including conventional methods (50% reduction in complex modulus and peak in phase angle) and newer methods (peak in S × N and two dissipated-energy-based approaches). The statistical analysis of the results illustrated that although the trends of fatigue life versus ageing levels were similar, different methods had significantly varying results. It was generally seen that ageing increased stiffness and the calculated fatigue life of bituminous binders improved when commonly applied strain levels of 5% and 7.5% were used. This result demonstrates the need to develop more robust methods to fully capture the true fatigue related deterioration of aged binders in the future. Among all the methods, the peak in S × N approach was found to be the most efficient based on the criteria used in the study and was the recommended approach considering current limitations. It showed no apparent defects and had the best correlations with other methods when the applied strains were 5% and 7.5%.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Bitumen, Ageing, Fatigue, Time sweep, Dissipated energy |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 27 Jun 2024 10:34 |
| Last Modified: | 28 Feb 2026 04:04 |
| DOI: | 10.1016/j.conbuildmat.2024.136698 |
| Related Websites: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3182508 |
| Disclaimer: | The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate. |
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