Table 1 Test results (24 MPa)
Time (h) | Contents | |
|---|---|---|
Compressive strength (MPa) | Ultrasonic pulse velocity (m/s) | |
16 | 0.65 | 97.00 |
20 | 0.62 | 96.00 |
24 | 1.07 | 885.02 |
48 | 2.84 | 2261.66 |
72 | 6.38 | 2676.80 |
120 | 14.03 | 2946.10 |
168 | 19.29 | 3061.37 |
360 | 20.38 | 3342.47 |
672 | 23.50 | 3316.47 |