High-performance polyurethane mixture pavement structure and construction method thereof

The invention discloses a high-performance polyurethane mixture pavement structure and a construction method thereof, and belongs to the technical field of road construction, the high-performance polyurethane mixture pavement structure sequentially comprises a base layer, a sealing layer, a mattress layer, a second bonding layer and a polyurethane surface layer from bottom to top; the mattress layer comprises a modified asphalt fine grain type mixture; the second bonding layer comprises high-viscosity modified emulsified asphalt; and the polyurethane surface layer comprises a polyurethane mixture. In the demulsification process of the modified emulsified asphalt of the bonding layer, 40% of water volatilizes to the interlayer of a polyurethane mixture, the curing reaction of a polyurethane layer is accelerated, and the problem that the hardening and curing time is too long due to the fact that the lower half part of the polyurethane layer cannot be supplied with water under the condition that the lower part o