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  Scopus ID: 21100926589

Properties of Microcapsules Used in Self-healing of Asphalt Pavement: A Review

Meryem Boutgoulla, Yousra Zghoundi, Nacer Akkouri, Yahya Agzenai Ben Salem, Yassine Taha, Khalid El Azdi, Mohamed Kebir, Zineb Edfouf and Rachid Hakkou

Abstract

Ageing and cracking are the main failure forms of the distresses in asphalt pavements. These issues occur due to the impact of factors such as heavy traffic and weather. Asphalt pavement is a self-healing material that can fix itself because it has the ability to restore its properties by closing micro-cracks. To make asphalt roads better at fixing themselves, numerous successful technologies are investigated. One of these techniques is called microencapsulation which represents nowadays a promising approach that could help make asphalt pavement last longer. In general, self-healing microcapsules will be incorporated into asphalt pavements before they are activated to release the rejuvenator, requiring them to be stable for years. Thereby, excessive thermal and mechanical properties in terms of asphalt pavements are necessary, because of how they are mixed and compacted. This paper aims to present an overview of new research on microencapsulation technologies, focusing on the durability of microcapsules embedded in asphalt pavement. Furthermore, some recommendations of future solutions to improve the mechanical stability of microcapsules will be proposed.

Published on: September 28, 2023
doi: 10.17756/nwj.2023-s2-057
Citation: Boutgoulla M, Zghoundi Y, Akkouri N, Salem YAB, Taha Y, et al. 2023. Properties of Microcapsules Used in Self-healing of Asphalt Pavement: A Review. NanoWorld J 9(S2): S332-S340.

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