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Influence of encapsulated sunflower oil on the mechanical and self-healing properties of dense-graded asphalt mixtures
,
Quantao Liu,
Lei Zhang,
Shaopeng Wu,
Erkut Yalcin,
Alvaro Garcia
Materials and Structures, Volume: 52, Issue: 4
Swansea University Author:
Jose Norambuena-Contreras
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Copyright: The Author(s) 2019. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License.
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DOI (Published version): 10.1617/s11527-019-1376-3
Abstract
This paper re-evaluates the effect of sunflower oil capsules on the mechanical and self-healing properties of dense-graded asphalt mixtures. Different percentages of capsules (0.50 wt%, 0.75 wt% and 1.00 wt%) were mixed into dense asphalt. The influence of capsules on the properties of asphalt such...
| Published in: | Materials and Structures |
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| ISSN: | 1359-5997 1871-6873 |
| Published: |
Springer Science and Business Media LLC
2019
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa66795 |
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| Abstract: |
This paper re-evaluates the effect of sunflower oil capsules on the mechanical and self-healing properties of dense-graded asphalt mixtures. Different percentages of capsules (0.50 wt%, 0.75 wt% and 1.00 wt%) were mixed into dense asphalt. The influence of capsules on the properties of asphalt such as density, indirect tensile strength, particle loss, fatigue life, and self-healing, has been investigated. The distribution and integrity of the capsules has been also evaluated by means of CT Scans. It has been proven that capsules can survive the mixing and compaction process of asphalt mixture, do not decrease its mechanical properties and they rupture and release the oil under a high compression loading. Higher capsule content in the mixture resulted in higher oil release ratios. Furthermore, the oil released from the capsules significantly increased the self-healing capability of mixtures. Results from previous research were validated, where it had been found that 0.5% of capsules is the optimal content to obtain good mechanical performance, without affecting the rheological properties of dense-graded asphalt mixtures. |
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| Keywords: |
Dense asphalt mixture; Encapsulated rejuvenators; Mechanical properties; Self-healing capability |
| College: |
Faculty of Science and Engineering |
| Funders: |
The authors express their gratitude for the funding given by Highways England UK, through the Research Project 558065, and to the Royal Society-Newton Mobility Grant, IE150750. The first author thanks the Government of Chile, since his Postdoctoral scholarship was funded by CONICYT/BECAS CHILE 74170030. Additionally, the fifth author thanks the financial support given by the Scientific and Technological Research Council of Turkey (TUBITAK) (application no. 1059B141600780) for the research scholarship granted. |
| Issue: |
4 |