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Table 3 Compressive and tensile strength of specimens at ambient temperature.

From: Prediction of the Tensile Strength of Normal and Steel Fiber Reinforced Concrete Exposed to High Temperatures

Specimen ID Day of test Compressive Strength
[MPa]
St.Dev
[MPa]
C.o.V
[%]
Tensile Strength
[MPa]
St.Dev
[MPa]
C.o.V
[%]
N 28 47.2 0.78 1.66 2.57 0.06 2.43
N 42 53.4 2.70 5.06 3.03 0.26 8.67
St25 28 44.5 5.30 11.92 3.2 0.11 3.63
St25 42 52.6 1.89 3.59 3.88 0.19 4.9
St50 28 44.0 3.47 7.89 3.15 0.12 3.94
St50 42 52.3 0.40 0.76 3.83 0.09 2.42
HS 28 80.2 4.27 5.33 4.8 0.16 3.43
HS 42 84.5 2.38 2.82 5.2 0.15 2.97