Equivalent Resilient Modulus Inversion and Calculation of Different Asphalt Pavement Structures

Table 7

Calculation of the equivalent resilient modulus of the top surface of the graded gravel transition layer.

Structural layer	S2				S3
	Inversion modulus value (MPa)	Equivalent resilient modulus			Inversion modulus value (MPa)	Equivalent resilient modulus
		Theoretical calculation method (MPa)	Inversion method (MPa)	Deviation value (%)		Theoretical calculation method (MPa)	Inversion method (MPa)	Deviation value (%)
FWD loading on the top surface of the lower layer
Transition layer	243	837	351	138	243	546	270	102
Base layer	6330				4762
Cushion layer and roadbed	212				102
FWD loading on the top surface of the middle layer
Transition layer	243	684	356	92	243	578	278	108
Base layer	6330				4762
Cushion layer and roadbed	127				117
FWD loading on the top surface of the upper layer
Transition layer	243	813	467	74	243	685	358	91
Base layer	6330				4762
Cushion layer and roadbed	197				181