![electric arc furnace startup time electric arc furnace startup time](https://sc01.alicdn.com/kf/HTB18vR2HFXXXXcqXFXXq6xXFXXX9/222483756/HTB18vR2HFXXXXcqXFXXq6xXFXXX9.jpg)
Such a healing treatment can, therefore, be seen and conceived as a new step towards a zero-waste concept by enabling it to improve environmental performance, reduce the costs of road pavement construction and maintenance practices, decrease polluting CO 2 emissions and the exploitation and extraction of natural resources (i.e., virgin aggregates and fresh binder). In order to overcome these issues, novel assisted healing treatments are gaining attention as an attempt to launch more sustainable engineering solutions that enable them to contribute to extending the service life of existing highway infrastructures that have reached unacceptable driving service conditions and require expensive maintenance intervention costs. These findings encourage greater confidence in promoting this innovative thermomechanical-based healing treatment for in-situ surface course asphalt mixtures of road pavements.Īsphalt concrete (AC) mixtures are typically exposed to repeated heavy traffic loading cycles and premature fracture failures caused by thermomechanical surface distress that triggers the appearance of different ways of cracking, causing a significant decrease in the mechanical properties and durability of the asphalt mixtures over time. The results indicated that the 8% EAF slag mixture was found to provide significant microwave heating energy savings by up to 69% compared with the benchmark 100% RAP mixture, and, at the same time, it experienced a remarkable stiffness recovery response of 140% of the initial mechanical properties. After that, the healing performance rates (%, HR) of the asphalt mixtures were calculated by repeated indirect tensile strength (ITS) and indirect tensile stiffness modulus (ITSM). In order to do this, three microwave heating temperatures (25 ☌, 60 ☌, and 80 ☌) and three mechanical recompaction levels (0, 25, and 50 gyrations) were selected.
![electric arc furnace startup time electric arc furnace startup time](https://www.americanmanufacturing.org/wp-content/uploads/2020/10/EAF-Fairfield.png)
To this end, a novel assisted thermomechanical healing treatment (i.e., a recompaction-based technique and microwave heating energy) was put forward to promote the potential healing effect of this treatment on the mechanical properties of the asphalt mixtures. This paper aims to assess and quantify the healing performance rates (HR) of half-warm recycled asphalt (HWRA) mixtures containing electric arc furnace (EAF) slag and total recycled asphalt pavement (RAP) rates.
![electric arc furnace startup time electric arc furnace startup time](https://live.staticflickr.com/2011/2287915692_7d6676d6dd_b.jpg)
Therefore, there are several efforts underway to offer more effective assisted healing treatments that are capable of overcoming such uncertainties. However, most of these studies are only conceptual and, thus, remain shrouded in uncertainty regarding technology development, economy, and application effect. Nowadays, the self-healing of asphalt pavements promoted by microwave radiation heating energy is gaining attention and strength in the scientific community.