Preparation method of garbage fly ash asphalt mortar segregation test piece and characterization method of migration behavior and distribution characteristics of garbage fly ash in asphalt cement

The invention discloses a preparation method of a garbage fly ash asphalt mortar segregation test piece and a characterization method of migration behavior and distribution characteristics of garbage fly ash in an asphalt cement, because an engineering environment is simulated, the prepared garbage fly ash asphalt mortar segregation test piece is more in line with engineering practical conditions; accurately positioning a garbage fly ash migration active area and a specific position through the mass change value delta i to obtain an active area test piece and a general active area test piece; according to the space distribution condition of the garbage fly ash in the active region test piece and the general active region test piece, the area proportions of the garbage fly ash in the vertical direction and the horizontal direction are obtained; extracting a vertical segregation index V and a horizontal segregation index L of the garbage fly ash asphalt mortar; more accurate characterization results of the migr