Table 3 Ratio of the compressive strength for each period (7 & 14 & 28Â days)
From: The effect of isolated Bacillus ureolytic bacteria in improving the bio-healing of concrete cracks
Type of concrete | Period (days) | Compressive strength (MPa) | (% form 28Â days for each type) |
|---|---|---|---|
C | 7 | 16.2 ± 0.58f | 70 |
|  | 14 | 19.8 ± 0.58e | 86 |
|  | 28 | 23.0 ± 0.58d | 100 |
B1 | 7 | 20.1 ± 0.58e | 60 |
|  | 14 | 26.5 ± 0.58c | 78 |
|  | 28 | 33.7 ± 0.58a | 100 |
B2 | 7 | 18.5 ± 0.58e | 65 |
|  | 14 | 22.3 ± 0.58d | 78 |
|  | 28 | 28.5 ± 0.58b | 100 |