The application of steel slag in self-healing pavement
Steel slag is a byproduct generated during the steelmaking process.Although the stock and annual production of steel slag in China are large,the utilization rate is rather low.Due to the excellent physical and mechanical properties of steel slag,it has great potential for application in road construc-tion.When cracks appear on the road surface,traditional pavement repair techniques have problems of incomplete repair and high cost.Heat induced self-healing technology is fast and convenient to repair.This paper reviews the research on the electromagnetic induction and microwave heating self-healing performance of steel slag asphalt concrete.The analysis results indicate that steel slag contains metals and metal oxides with high electromagnetic parameters such as Fe,Fe2O3,etc.,making it suitable for induction heating and microwave heating.The heating and healing performance of steel slag asphalt mixture is better than that of ordinary asphalt mixture.The efficiency of microwave healing is lower than induction healing,but the heating uniformity and effective heating depth are higher than induction healing.When determining the amount of steel slag and heating parameters,comprehensive consider-ation should be given to heating efficiency and uniformity.
万方数据
维普
