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Table 3 Reduction ratio of strength and elastic modulus of concrete due to heat (adopted Cheng et al. (Cheng et al., 2004)).

From: Experimental and Analytical Studies for the Size Effect on the Axial Strength of High-Strength Concrete Walls with Various Fire-Damaged Areas

Temperature (°C) Reduction ratio of concrete strength Reduction ratio of elastic modulus of concrete
20 0 0
100 0.244 0.229
200 0.245 0.408
300 0.247 0.530
400 0.252 0.649
500 0.262 0.745
600 0.551 0.842
700 0.685 0.904
800 0.853 0.973
900 0.955 0.985