The study found that: coal tar and petroleum asphalt mixing coal petroleum asphalt, its comprehensive performance is more excellent than the single, asphalt, and stone adhesion performance: better performance, lower paving and compaction temperature, corrosion resistance, large number of pavement friction coefficient. The study on coal asphalt modified asphalt mainly concentrated in the experimental method, and the preliminary study shows that there is a certain relationship between the nature and the coal asphalt modified asphalt adding proportion and particle size, that there is a certain relationship, or mathematical relationship, so I hope with the mathematical modeling method of the modified process analysis, this method is rarely reported.In this study, based on previous studies, in the deployment of a certain process, study the coal asphalt of different proportion and size of mixed asphalt three indicators (softening point, ductility and penetration) influence, establish coal tar addition ratio, particle size and mixed asphalt performance index of two-dimensional the relationship between. The experimental data were further analyzed, using coal tar pitch ratio, particle size and mixed asphalt pavement performance as the three variables, the experimental data of space, using the Gauss2D function will be synthesized 3D scattered 3D surface, and sort out the function relation. Then carries on the polynomial to the model to simplify, uses the Matlab to carry on the solution analysis to the equation group. According to the results of the solution, the process parameters and the modification process were analyzed and discussed.
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