1. Reconstruction: completely demolish the original pavement and re-lay a new pavement layer. This method is suitable for the situation that the road foundation is good and only the pavement layer needs to be repaired.
2. Surface treatment: Surface treatment such as grinding, cleaning, watering, etc. is carried out on the original pavement to repair the pavement diseases and improve the service life of the pavement. Suitable for old roads with good pavement conditions.
3. Add layer reconstruction: add a new layer of pavement on the original pavement to improve the bearing capacity and service life of the road. It is suitable for the situation that the road foundation is good and only needs to be paved.