Comparisons between Asphalt Pavement Responses under Vehicular Loading and FWD Loading

Table 5

The fitting results of equation (1) for different types of strain values.

Pavement type	Depth (cm)	Direction	Model parameters			R^2
			a1	a2	a3
Semirigid	13	Transverse	−0.061	2.851	0.123	0.953
		Longitudinal	−0.255	9.289	0.114	0.989
	24	Transverse	−0.036	1.932	0.110	0.941
		Longitudinal	−0.083	3.979	0.114	0.973
Flexible	6	Transverse	−0.060	2.723	0.117	0.961
		Longitudinal	−0.151	7.956	0.106	0.964
	30	Transverse	−0.186	17.932	0.036	0.932
		Longitudinal	−0.381	27.560	0.051	0.983