Table 3.

The comparison between estimated results from GPR and measured results from field cores.

Cores	Top Surface Layer			Surface Layer			Poorly Compacted		Delamination
	Measured Thickness (cm)	Estimated Thickness (cm)	Error (%)	Measured Thickness (cm)	Estimated Thickness (cm)	Error (%)	Estimated Result	Measured Result	Estimated Result	Measured Result
#1	4.0	4.1	2.5	16.2	16.6	2.5	×	×	×	×
#2	3.9	3.8	2.5	17.8	17.6	1.1	×	×	×	×
#3	3.9	3.7	5.0	18.3	17.8	2.7	×	×	×	×