Table 1 Loading history in test stages 1, 2, and 3 for specimen 2
From: Automated Surface Wave Measurements for Evaluating the Depth of Surface-Breaking Cracks in Concrete
Test stage 1 | Test stage 1 | Test stage 1 | |||
|---|---|---|---|---|---|
Test steps i | Loading P1 [kips (kN)] | Test steps i | Loading P2 [kips (kN)] | Test steps i | Loading P3 [kips (kN)] |
0 | 0 | 7 | 1 (4.48) | 12 | 0 |
1 | 4 (17.79) | 8 | 2 (8.89) | 13 | 4 (17.79) |
2 | 8 (35.58) | 9 | 3 (13.34) | 14 | 8 (35.58) |
3 | 12 (53.37) | 10 | 3.5 (15.56) | 15 | 12 (53.37) |
4 | 16 (71.17) | 11a | – | 16 | 16 (71.17) |
5 | 20 (88.96) | 17 | 20 (88.96) | ||
6 | 24 (106.75) | 18 | 24 (106.75) | ||