Small-Scale Void-Size Determination in Reinforced Concrete Using GPR

Table 4

Void-size determination errors in experiment.

Void size (cm)	Estimated value (cm)	Error (%)
2	2.00	0
3	3.21	7.00
4	3.62	−9.50
6	6.02	−0.33
8	7.25	−9.38
10	8.13	−18.70