Abstract
The concept of self‐healing has an excellent potential to extend the life of asphalt pavement. This technology can be considered a sustainable technology due to its ability to reduce the utilization of asphalt mixture production materials used for road maintenance, polluting the environment. It is a complex physicochemical process wherein the molecular diffusion healing mechanisms in asphalt materials are inspired by self‐healing polymeric systems, which describe the self‐recovery behaviors based on polymer chain dynamics. Several methods have been adopted to improve the self‐healing of asphalt, one of which is induction healing. It is the process of heating the asphalt pavement incorporated with an electrically conductive material such as steel fibers, wherein asphalt healing is undertaken via electric field induction. Induction healing via induction heating occurs with eddy current where the electric current flows within the conductive fibers when magnetically susceptible under the magnetic field. Microwave heating is another self‐healing method similar to induction in which magnetic radiation is employed to treat asphalt mixtures instead of the electric field‐induced induction healing processes. The conductive fibers can absorb the electromagnetic (EM) waves to convert them into heat energy through doublet polarization, interface polarization, and electrical conduction dissipation when placed in the microwave field. These two types of heating systems, which are induction heating and microwave heating, are compared and discussed thoroughly in this study. Finally, some recommendations for the future development of self‐healing asphalt are proposed.
Highlights
Is causes heat to be generated by the conductor via electron energy transfer to its atoms through electronelectron collisions, which spreads across all its atoms. e phenomena observed in the binder-conductor interfaces result in heat transfer between conductor and asphalt binder atoms; uniform heating between both interfaces is achieved. e transfer of energy from the applied electric field results in unrecoverable heat loss between both atomic interfaces refers to its dielectric loss, hysteresis, or dissipation. e amount of energy transfer is mainly dependent on the properties of both the conductor and binder used, Healing Type Induction Heating
Asphalt self-healing processes mainly entail the wetting of nanocrack surfaces, diffusion of binder molecules between binder-aggregate interfaces, and the randomization of these diffused molecules, which help achieve the strength of cracked interfaces relatively similar to that of the original materials. us, self-healing is an effective method of enhancing the ability of asphalt pavement to heal, especially on microcracks healing
Incorporating self-healing technologies into asphalt pavements leads to more durable roads and addresses environmental and economic challenges by lowering costs and emissions during maintenance and manufacturing processes
Summary
Mohd Fahmi Haikal Mohd Ghazali, Mohd Rosli Mohd Hasan ,1 Anasyida Abu Seman ,2 Dillon Dipagk Dorett, Najib Mukhtar, and Ramadhansyah Putra Jaya 4. Several methods have been adopted to improve the self-healing of asphalt, one of which is induction healing It is the process of heating the asphalt pavement incorporated with an electrically conductive material such as steel fibers, wherein asphalt healing is undertaken via electric field induction. Induction healing via induction heating occurs with eddy current where the electric current flows within the conductive fibers when magnetically susceptible under the magnetic field. Microwave heating is another self-healing method similar to induction in which magnetic radiation is employed to treat asphalt mixtures instead of the electric field-induced induction healing processes. Some recommendations for the future development of selfhealing asphalt are proposed
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