Abstract

In terms of the diversity and complexity of current molecular models of asphalt, this paper proposes the solubility parameter as the evaluation index of asphalt component rationality. The solubility parameters of 22 asphaltenes average molecular models, 3 aromatics average molecular models, 3 saturates average molecular models and 4 resins average molecular models were calculated, according to the principle of similar compatibility, reasonable molecular models of the average asphalt component were selected. A molecular model of asphalt was established based on a four-component test. The glass transition temperature was used as the evaluation index, and the temperature difference between the molecular simulation and the DSC test was less than 1 °C.

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