Asphalt mixture discrete element model construction method based on real mass distribution

The invention discloses an asphalt mixture discrete element model construction method based on real mass distribution, and relates to the technical field of highway recycled mixture tests. Scanning the test piece to obtain a voxel model and a CT section image of the asphalt mixture; the CT section image is processed, aggregate is screened, and section images of the aggregate and gaps are exported; performing three-dimensional reconstruction on the basis of the section image; exporting a surface mesh model of the aggregate particles; importing the aggregate into discrete element software, rotating the aggregate, and creating an aggregate particle model template; performing three-dimensional reconstruction on the section image sequence of the aggregate, and calculating information of the aggregate; generating an asphalt mixture skeleton model; filling mortar particles to simulate mortar, and constructing a three-dimensional discrete element model of the asphalt mixture; and adjusting parameters until the modeli