Parameter Optimization of Graded Macadam Transitional Layer for Inverted Asphalt Pavement Based on the Mechanical Response and Strength Standard

Table 4

The optimized structure parameters of IAP.

Layer	Material type	Thickness (cm)	Modulus (MPa)	Poisson ratio	Strength control standard
Top-surface	SMA-13 asphalt mastic crushed stone	6	1450	0.25	See formula (4)
Middle-surface	AC-20 asphalt mixture	8	1600	0.25
Bottom-surface	AC-25 asphalt mixture	9	1850	0.25
Top-base	Graded macadam transitional layer	18	700	0.35
Bottom-base	Cement stabilized crushed stone	36	8500	0.25
	Subgrade		40	0.40