Calibration on MEPDG Low Temperature Cracking Model and Recommendation on Asphalt Pavement Structures in Seasonal Frozen Region of China

Table 6

Pavement structure and material information for the selected highways.

Highway	Surface layer	Intermediate layer	Bottom layer	Base	Subbase	Subgrade
Changping	4 cm HMA16	5 cm HMA 20	6 cm HMA25	25 cm lime and fly ash treated crushed stone	25 cm lime and fly ash treated soil	30 cm gravel + soil foundation
Qitai	5 cm HMA16	—	7 cm HMA20	20 cm cement stabilized crushed stone	30 cm cement stabilized gravel	25 cm gravel + soil foundation
Haxihuan	4 cm HMA16	6 cm HMA 20	7 cm HMA25	20 cm cement stabilized gravel	33 cm lime and fly ash treated crushed stone	20 cm gravel + soil foundation