Characterization of polymer capsules used for self-healing asphalt pavements

T. Al-Mansoori, R. Micaelo, Alvaro Garcia-Hernandez

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Maintenance and preservation of asphalt pavements is one of the main issues affecting the budgets of Highway Administrations. Asphalt roads life expectancy could be extended by including encapsulated rejuvenators that automatically break and spread healing agents into the microcracks of aged bitumen. With this purpose, a new type of capsules have been developed and added into asphalt mixture. The objective of this article is to investigate the size, morphology, mechanical stability, thermal stability of the new type of capsules and their softening effect on bitumen. The results show that capsules can survive the high temperatures and stresses of the mixing process. Moreover, it was found that the oil can diffuse into bitumen and change its viscosity if the capsules are broken. These capsules containing healing agents can be a promising improvement towards the development of clever pavements.

Original languageEnglish
Title of host publicationFunctional Pavement Design - Proceedings of the 4th Chinese-European Workshop on Functional Pavement Design (CEW 2016)
EditorsS. Erkens , X. Liu , K. Anupam , Y. Tan
Place of PublicationBoca Raton, Florida
PublisherCRC Press/Balkema
Pages1167-1174
Number of pages8
ISBN (Print)978-131564327-4
Publication statusPublished - Jun 2016
Event4th Chinese-European Workshop on Functional Pavement Design, CEW 2016 - Delft, Netherlands
Duration: 29 Jun 20161 Jul 2016

Conference

Conference4th Chinese-European Workshop on Functional Pavement Design, CEW 2016
CountryNetherlands
CityDelft
Period29/06/161/07/16

Keywords

  • Asphalt mixtures

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  • Cite this

    Al-Mansoori, T., Micaelo, R., & Garcia-Hernandez, A. (2016). Characterization of polymer capsules used for self-healing asphalt pavements. In S. Erkens , X. Liu , K. Anupam , & Y. Tan (Eds.), Functional Pavement Design - Proceedings of the 4th Chinese-European Workshop on Functional Pavement Design (CEW 2016) (pp. 1167-1174). CRC Press/Balkema.