“…The molecular structure of some of the molecules is adjusted according to Petersen's asphalt-aging theory [23][24][25][26][27] (asphalt mainly forms sulfoxide functional groups in the short-term aging stage and ketone functional groups in the long-term aging stage). Additionally, the content of asphaltene in the virgin asphalt model is slightly increased, while the content of aromatic fraction, saturated fraction, and resin fraction is slightly decreased to reflect experimental data of the content of the four components in the short-term aged asphalt [28][29][30] .…”