Table 2 Values of relative indexes for concrete quality evaluation
From: Comprehensive index condition assessment of structural concrete based on surface wave techniques
Void volume ratio (%) | Relative index | ||
|---|---|---|---|
P-wave velocity RI 1 (%) | R-wave velocity RI 2 (%) | Attenuation coefficient RI 3 (%) | |
0 | 100.00 | 100.00 | 100.00 |
5 | 77.17 | 86.08 | 95.45 |
10 | 73.91 | 56.96 | 72.73 |
15 | 57.61 | 58.23 | 74.54 |
20 | 48.91 | 53.16 | 50.00 |
30 | 0.00 | 0.00 | 0.00 |