The invention relates to a
preventive maintenance method for an
asphalt concrete pavement. According to the method maintenance operation is implemented based on a maintenance
truck. The method comprises the following specific operation steps: S1, pavement cleaning: removing sundries on the pavement; S2, pavement heating: heating and
softening the pavement by using a heating mechanism; S3,
coating of a curing agent:
coating the pavement with the curing agent by using a curing mechanism; S4, adding and covering of a mixture: subjecting the pavement to adding and covering with a new and hot
asphalt mixture through an adding and covering mechanism; S5, leveling: flattening the new and hot
asphalt mixture through a
leveling mechanism; and S6, compacting: rolling the new and hot asphalt mixture by a compacting mechanism to obtain a protective layer. According to the invention, heating
softening of the pavement induces self-repairing of
disease parts, pavement diseases are filled and repaired by
coating with the curing agent, excavation of a damaged
asphalt concrete pavement is not needed, and curing efficiency is improved; and the pavement is covered with the new and hot asphalt mixture, a compact and flat protective layer is formed after flattening and rolling, the protective layer and the pavement form an integral new pavement, so the effect of prolonging the service life of the
asphalt concrete pavement is facilitated.