Study on Performance of Permeable Asphalt Mixtures Using Different High‐Viscosity Modifiers

ABSTRACT In order to alleviate the issues of insufficient bearing capacity of the porous asphalt pavement and the relatively poor adhesion ability between the mineral aggregates and the asphalt, and to lower the cost of the high‐viscosity modifiers, this study successfully develops two novel HVMs—HVM‐1 and HVM‐2—by incorporating adhesive resin, SBS, and additive. The optimal asphalt aggregate ratio is determined through mix design using commercial TPS and SINOTPS as control groups. The road performance of high‐viscosity asphalt mixtures is evaluated through relevant tests on aging resistance, high‐temperature stability, low‐temperature cracking resistance, water stability, and water permeability. The results demonstrate that the addition of the novel HVMs effectively retards asphalt aging. All four modifiers significantly improve the road performance of the asphalt mixture; notably, HVM‐1 modified asphalt mixture exhibits exceptional high‐temperature performance and water stability while HVM‐2 modified asphalt mixture demonstrates excellent low‐temperature performance surpassing or comparable to TPS‐ and SINOTPS‐modified asphalt mixture, respectively. Furthermore, cost analysis reveals that self‐produced HVMs offer savings of up to 40% compared to SINOTPS and TPS modifiers, respectively, highlighting their significant application potential and economic benefits.