Table 8 Relationship between the tensile strength and the compressive strength according to the curing time.
Specimens ID | 28Â days | 190Â days | ||||
|---|---|---|---|---|---|---|
Avg. \(f_{c} '\) (MPa) | Avg. fst (MPa) | fst/\(f_{c} '\) (%) | Avg. \(f_{c} '\) (MPa) | Avg. fst (MPa) | fst/\(f_{c} '\) (%) | |
30-R0 | 46.9 | 3.9 | 8.3 | 55.3 | 4.5 | 8.1 |
30-R15 | 43.1 | 3.2 | 7.4 | 49.8 | 4.8 | 9.6 |
30-R30 | 36.7 | 3.7 | 10.1 | 48.9 | 4.3 | 8.8 |
30-R50 | 35.1 | 3.5 | 10.0 | 42.3 | 4.4 | 10.4 |
30-R100 | 33.5 | 3.4 | 10.1 | 39.3 | 4.1 | 10.4 |
60-R0 | 66.9 | 4.9 | 7.3 | 79.6 | 5.4 | 6.8 |
60-R15 | 68.6 | 5.4 | 7.9 | 79.7 | 5.4 | 6.8 |
60-R30 | 63.8 | 5.5 | 8.6 | 76.2 | 5.4 | 7.1 |
60-R50 | 67.1 | 4.5 | 6.7 | 79.0 | 5.5 | 7.0 |
60-R100 | 61.7 | 4.7 | 7.6 | – |  |  |