A BP Neural Network Method for Grade Classification of Loose Damage in Semirigid Pavement Bases

Table 5

Road structure drawing.

Name of structural layer	Depth (cm)	Dielectric constant	Conductivity (mS/m)
AC-13C	4	4–9	0.005
AC-20C	6
ATB-25	12
Cement-stabilized macadam	34	9–14	0.05
Low-dose cement-stabilized macadam	16	9–14	0.05