Dielectric Characteristics of Unsaturated Loess and the Safety Detection of the Road Subgrade Based on GPR

Table 2

Loess permittivity with different moisture contents under different frequencies.

Moisture content (%)	εRADAN900	εRADAN400	εRADAN2G
10	4.06	3.96	5.21
13	4.82	4.26	6.01
16	5.98	5.78	7.12
19	6.99	6.65	8.93
22	8.98	8.37	10.98
25	11.43	10.86	12.88
28	13.21	12.56	14.98
31	15.43	14.77	17.12
34	18.12	17.36	19.57
37	20.98	20.32	22.23