Table 2 Compressive strength of concrete cubes.
Cycles of freeze–thaw | Cubic compressive strength | Compressive strength | Tensile strength | Modulus of elasticity | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
fcu (MPa) | u (MPa) | CoV | fc (MPa) | u (MPa) | CoV | ft (MPa) | u (MPa) | CoV | Ec (GPa) | u (MPa) | CoV | |
0 | 47.3 | 47.0 | 0.011 | 31.6 | 31.5 | 0.014 | 3.0 | 3.0 | 0.009 | 34.1 | 34.0 | 0.003 |
47.5 | 31.8 | 3.0 | 34.1 | |||||||||
46.3 | 31.0 | 3.0 | 33.9 | |||||||||
50 | 36.3 | 35.6 | 0.014 | 24.3 | 23.8 | 0.018 | 2.5 | 2.5 | 0.012 | 31.7 | 31.5 | 0.005 |
35.4 | 23.7 | 2.5 | 31.4 | |||||||||
35.1 | 23.5 | 2.5 | 31.4 | |||||||||
100 | 31.1 | 29.8 | 0.03 | 20.8 | 20.0 | 0.037 | 2.3 | 2.2 | 0.025 | 30.2 | 29.7 | 0.013 |
29.3 | 19.6 | 2.2 | 29.5 | |||||||||
29.1 | 19.5 | 2.2 | 29.5 | |||||||||
150 | 25.4 | 26.1 | 0.021 | 17.0 | 17.5 | 0.025 | 2.0 | 2.0 | 0.017 | 28.0 | 28.3 | 0.010 |
26.7 | 17.9 | 2.1 | 28.6 | |||||||||
26.2 | 17.5 | 2.0 | 28.4 | |||||||||