Nondestructive testing device for construction quality of asphalt surface layer

The invention belongs to the technical field of pavement quality detection, and particularly relates to an asphalt surface layer construction quality nondestructive testing device, which comprises an asphalt surface and a plurality of guide rails, the two sides of the asphalt surface are both provided with a plurality of groups of telescopic adjusting studs, and each guide rail is arranged at the top of one group of two telescopic adjusting studs at the same side. A bubble level is fixedly arranged on the upper end face of each guide rail, an insulating cross arm is arranged above the asphalt surface, and a plurality of detection mechanisms are arranged on the end face of the insulating cross arm. After the asphalt surface layer is compacted, the flatness of the asphalt surface can be rapidly detected, the friction coefficient of the surface layer of the asphalt surface can be synchronously detected, the detection coverage range is large, the asphalt surface cannot be damaged, the overall efficiency can be im