Table 1 Testing parameters.
From: Shear behavior of the interface between asphalt concrete core and transition under seepage effect
Indexes | Value | Indexes | Value |
|---|---|---|---|
Spectrometer frequency | 23 MHz | Radio frequency delay | 0.20 |
Frequency offset | 334,691.79 Hz | Analog signal gain ratio | 20.0 |
Time of waiting for repeat | 2000 ms | Digital gain ratio | 3 |
Sampling width | 250 kHz | Number of scan | 16 |
90° pulse | 17 µs | Time interval of echo | 0.200 ms |
180° pulse | 35.04 µs | Number of echo | 8000 |
