To provide an asphalt material, with which reduced weight and improved strength, durability, toughness, stability or the like of pavement can be obtained without relying on the softening of thermoplastic plastic material by heating at a high temp. in execution of pavement, which is also applicable with these advantages to a wall material to a wall surface or to a base material of a blocked building material not only a paving material for a road bed or a floor bed.

This forming method of solidified asphalt layer comprises the steps of coating solid components comprising at least aggregates 3, fillers 2 and branched plastic materials 4 which are crushed to branched forms with asphalt 1 so that the asphalt 1 impregnates into the gaps of individual solid components.