Research on temperature field distribution characteristics for asphalt pavement structure layers under solar radiation

To further explore the potential influence of different structural layer properties on the temperature field distribution characteristics of asphalt pavement structure layers (TFDAPSL), the spatial evolution behaviour of temperature field under solar radiation can be jointly studied by the temperature sensor detection method and the finite element method (FEM). Based on the test sections, the FEM models of asphalt pavement structure layers can be established, and the corresponding material properties can be specified. Then, the potential influence of structural layer properties on TFDAPSL can be compared and analysed, and the contribution of solar radiation to the temperature field in different seasons can be explored. Combined with the temperature sensor detection data, the TFDAPSL under solar radiation can be further verified. It is found that the asphalt pavement FEM model based on solar radiation can quickly evaluate the TFDAPSL. Methods such as increasing the thickness of the asphalt surface layer, changing the material combination of structural layers, and optimising the thermodynamic parameters can effectively optimise the uneven spatial distribution of TFDAPSL. This study can visually demonstrate the influence of different structural layer properties on TFDAPSL, which can provide a theoretical foundation for improving the spatial distribution of temperature field.