Table 7 Measured splitting tensile strength and elastic modulus.
Specimen ID | Splitting tensile strength (MPa) | Elastic modulus (MPa) | ||||
|---|---|---|---|---|---|---|
28Â days | 190Â days | 190Â days | ||||
Measured | Avg. (COV) | Measured | Avg. (COV) | Measured | Avg. (COV) | |
30-R0 | 3.8/4.1/– | 3.9 ± 0.1 (2.6%) | 4.8/5.4/3.4 | 4.5 ± 0.8 (17.8%) | 32.5/30.1/35.9 | 32.5 ± 2.4 (7.4%) |
30-R15 | 3.2/3.1/– | 3.2 ± 0.0 (0.0%) | 5.1/4.4/– | 4.8 ± 0.4 (8.3%) | 28.3/–/– | 28.3 |
30-R30 | 3.3/3.6/4.1 | 3.7 ± 0.3 (8.1%) | 4.0/4.7/4.1 | 4.3 ± 0.3 (7.0%) | 33.2/32.5/31.6 | 32.4 ± 0.7 (2.2%) |
30-R50 | 3.5/3.6/3.4 | 3.5 ± 0.1 (2.9%) | 4.5/4.5/4.3 | 4.4 ± 0.1 (2.3%) | 32.9/25.2/17.2 | 25.1 ± 6.4 (25.5%) |
30-R100 | 3.8/3.4/3.1 | 3.4 ± 0.3 (8.8%) | 4.4/3.7/4.3 | 4.1 ± 0.3 (7.3%) | 20.5/–/– | 20.5 |
60-R0 | 4.6/5.1/– | 4.9 ± 0.3 (6.1%) | 6.2/4.6/5.3 | 5.4 ± 0.7 (13.0%) | 35.7/37.1/32.8 | 35.2 ± 1.8 (5.1%) |
60-R15 | 4.8/5.3/6.2 | 5.4 ± 0.6 (11.1%) | 5.7/5.0/5.5 | 5.4 ± 0.3 (5.6%) | –/–/– | N/A |
60-R30 | 5.3/5.7/– | 5.5 ± 0.2 (3.6%) | 5.4/5.3/5.5 | 5.4 ± 0.1 (1.9%) | 40.5/33.5/28.9 | 34.3 ± 4.8 (14.0%) |
60-R50 | 4.4/4.6/– | 4.5 ± 0.1 (2.2%) | 5.7/5.5/5.2 | 5.5 ± 0.2 (3.6%) | 34.2/32.3/36.6 | 34.4 to ± 1.7 (4.9%) |
60-R100 | 4.8/4.7/4.7 | 4.7 ± 0.1 (2.1%) | 5.5/5.4/– | 5.5 ± 0.1 (1.8%) | –/–/– | N/A |