Table 2 Test results (30 MPa)
Time (h) | Contents | |
|---|---|---|
Compressive strength (MPa) | Ultrasonic pulse velocity (m/s) | |
16 | 0.62 | 96.80 |
20 | 0.62 | 96.00 |
24 | 1.12 | 400.55 |
48 | 4.32 | 2366.44 |
72 | 8.96 | 2840.04 |
120 | 17.69 | 2978.40 |
168 | 21.44 | 3090.73 |
360 | 23.08 | 3317.00 |
672 | 22.50 | 3299.42 |