Table 3.
The thermal parameters of pavement structures33.
| Number | Structure | Material | Thickness/m | Density/(kg/m3) | Thermal conductivity/(J/(m·h·℃)) | Heat capacity/(J/(kg·℃)) |
|---|---|---|---|---|---|---|
| ① | The upper surface layer of asphalt concrete | AC-13 C | 0.15 | 2300 | 4140 | 1670 |
| ② | The under surface layer of asphalt concrete | AC-20 C | 0.15 | 2320 | 4320 | 1670 |
| ③ | Base layer | Cement stabilized crushed rock | 0.4 | 2200 | 3960 | 960 |
| ④ | Subbase layer | Graded sand and stone | 0.5 | 2100 | 3240 | 2000 |
| ⑤ | Insulation layer | Expanded polystyrene board (EPS) | 0.1 | 40 | 108 | 1400 |
| ⑥ | Crushed rock layer | Particle size of 6–8 cm | 1.5 | 1490 | 1426 | 839 |