Theoretical Background of Self-Healing in Asphalt Concrete

Abstract:

The article presents theoretical premises that can be used to describe the mechanism of self-healing of the state of the structure of asphalt concrete containing an encapsulated reducing agent. The article presents the main provisions of the Flory-Huggins theory, according to which the restorative effect can be realized due to the ability of organic binder molecules to spontaneously entangle with each other. The intensity of this process depends on the proximity of the molecules to each other and the rate of spontaneous motion, which increases with increasing temperature. And in accordance with the theory of adhesion, the restoration of the state of the structure of asphalt concrete can be due to the mechanisms of formation of adhesive bonds with the help of an encapsulated modifier. To describe the features of the formation of adhesive bonds during restoration, the approaches described in the mechanical, molecular, chemical, diffuse, relaxation theory of adhesion or the theory of weak boundary layers can be used.

• Periodical: Key Engineering Materials (Volume 951)
• Pages: 133-140
• DOI: https://doi.org/10.4028/p-9n0ijM
• Online since: August 2023
• Authors: Sergei Inozemtsev*
• Keywords: Adhesion Theory, Asphalt Concrete, Flory-Haggits Theory, Healing Agent, Self-Healing

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