Research Progress on Self-Healing and Repairing Technology of Asphalt Mixture Crack

Abstract

The latest research results at home and abroad have comprehensively analyzed the self-healing and repairing technology of asphalt mixture, and introduced the self-healing mechanism of asphalt and self-healing behavior of asphalt. Active and passive healing methods are mainly discussed. Both methods can effectively enhance the healing properties of asphalt materials and achieve the purpose of repairing cracks and looseness of asphalt concrete pavement. The development of self-healing asphalt concrete technology at home and abroad is expounded, and the application significance and application prospect of the technology are analyzed. The conclusion is that the environmental and social benefits of self-healing asphalt concrete technology are outstanding, and the promotion is of great significance and good development prospects.

Study of the self‐healing properties of aged asphalt‐binder regenerated using residual soybean‐oil

“…The driving force behind the potential to self-heal is the chemical adsorption and van der Waals forces formed by hydrogen bonds on the crack surface. 4 Yang 5 discovered that the increase in both the healing temperature and the healing time were conducive to the infiltration and diffusion of the regenerated asphalt-binder molecules at the crack interface. Smith et al 6 proposed that the granularity of mineral powder affects the self-healing properties of the asphalt mixture.…”

“…However, the self‐healing capability of the asphalt‐binder can potentially improve the pavement performance of aged asphalt‐mixtures. The driving force behind the potential to self‐heal is the chemical adsorption and van der Waals forces formed by hydrogen bonds on the crack surface 4 . Yang 5 discovered that the increase in both the healing temperature and the healing time were conducive to the infiltration and diffusion of the regenerated asphalt‐binder molecules at the crack interface.…”