| Title: | Active-enhanced core-shell microcapsules for self-healing properties of asphalt mortar : preparation and performance research |
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| Authors: | ID He, Liang (Author)
ID Dai, Changjiang (Author)
ID Meng, Sen (Author)
ID Li, Guannan (Author)
ID Tao, Mengzhe (Author)
ID Bergh, Wim van den (Author)
ID Zhukouski, Yahor (Author)
ID Ržek, Lidija (Author)
ID Gaspar, Laszlo (Author)
ID Valentin, Jan (Author)
ID Kowalski, Karol J. (Author)
ID Du, Rongyao (Author)
ID Mladenovic, Goran (Author)
ID Mirković, Katarina (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0950061825012619
 PDF - Presentation file. (2,56 MB, This file will be accessible after 05.04.2027)
MD5: A5EE683328A1B0A71E45AD118FC05A84
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
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| Abstract: | Microcapsule technology actively repairs microcracks in asphalt pavement, extending its service life. This study develops multi-healing core-shell microcapsules consisting of a core (polyurea formaldehyde sub-capsules containing sunflower oil) and a shell (calcium alginate capsule) that provides protection and enables delayed release. Scanning electron microscopy (SEM) results show the microcapsules have evenly distributed chambers with an average diameter of approximately 2 mm. The core content and encapsulation efficiency are measured at 65.38 % and 78.52 %, respectively, while the shell exhibits an average hardness of 0.27 GPa. Thermogravimetric analysis indicates the microcapsules can withstand high temperatures up to 230℃. Through multiple self-healing tests, the study demonstrates that the core-shell microcapsules provide sustainable and repeated repair effects on asphalt, with an optimal dosage of 1.5 wt% in asphalt mortar. The self-healing effect improves with increasing dosage, healing time, and healing temperature. The microcapsules continuously release rejuvenator, repairing cracks and enhancing asphalt performance. |
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| Keywords: | self-healing microcapsules, asphalt pavement, core-shell structure, multi-healing capability |
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| Publication status: | Published |
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| Publication version: | Author Accepted Manuscript |
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| Publication date: | 05.04.2025 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 1-14 |
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| Numbering: | Vol. 474, [article no.] 141113 |
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| PID: | 20.500.12556/DiRROS-22202  |
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| UDC: | 620.1/.2 |
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| ISSN on article: | 1879-0526 |
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| DOI: | 10.1016/j.conbuildmat.2025.141113 |
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| COBISS.SI-ID: | 234472451 |
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| Copyright: | © 2025 Elsevier Ltd |
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| Publication date in DiRROS: | 09.05.2025 |
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| Views: | 566 |
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| Downloads: | 119 |
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| Metadata: |    |
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