Analysis of the Self-Healing Process of Asphalt and its Influencing Factors

Analysis of the Self-Healing Process of Asphalt and its Influencing Factors

Blog Article

Molecular dynamics was used in this study to understand the self-healing behavior and mechanism of asphalt.Density, solubility, and mean square displacement parameters were analyzed to confirm the validity of the matrix asphalt model.Molecular simulation software was used to develop a microscopic matrix asphalt self-healing model at the nanoscale.Cracking width of asphalt microcracks was represented by setting different vacuum layer thicknesses as the asphalt self-healing read more model.

Density and diffusion coefficient of the self-healing model were obtained by running the molecular software to understand the entire airpods in jacksonville process of asphalt healing.The self-healing mechanism of the matrix asphalt was analyzed.Results showed that the entire self-healing process of asphalt could be clearly divided into four stages, namely, external environment energy endowment, model end healing, asphalt microcrack healing, and self-healing model self-diffusion stages.Molecules of each component in the asphalt self-healing process diffuse and move mutually under constant temperature conditions.

The diffusion coefficient of saturated components and polar aromatic was higher than that of asphaltenes and aromatic components.