Asphalt and SBS compatibility evaluation method based on molecular dynamics simulation

The invention relates to an asphalt and SBS compatibility evaluation method based on molecular dynamics simulation, belongs to the technical field of modified asphalt compatibility, and mainly solvesthe problem that no specific and accurate method for evaluating the compatibility of SBS and asphalt exists at present. A molecular dynamics simulation method is used as a basis. The method comprises:using molecular dynamics simulation software, respectively constructing a single asphalt system unit cell model, an SBS block copolymer molecular structure model and an SBS modified asphalt blendingsystem model, respectively carrying out molecular dynamics simulation on the models, calculating to obtain solubility parameters and interaction energy, and characterizing and evaluating the compatibility of SBS and asphalt by taking the solubility parameters and interaction energy as indexes. The compatibility evaluation method disclosed by the invention provides an idea for researching the compatibility mechanism of the S