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Table 10 Collected information of the fire-damaged walls for regression analysis.

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

Name Concrete strength (MPa) Width (mm) Total height (effective height, mm) Number of heated surfaces Axial strength (kN)
27S_CL_750 26.8 750 1300 (600) 0 3545.0
27S_1F_750 1 2335.0
40S_CL_600 53.9 600 1200 (600) 0 4870.3
40S_1H_600 0.5 3918.6
40S_1F_600 1 3195.0
40S_2F_600 2 3041.7
54S_CL_600 41 0 4438.0
54S_1H_600 0.5 4112.0
54S _1F_600 1 3106.0
54S _2F_600 2 3007.0
54T_CL_600 53.9 2800 (2600) 0 6773.5
54T_1H_600 0.5 5569.0
54T_1F_600 1 4375.0
54T_2F_600 2 3003.0
54T_CL_1500 1500 0 16,087.0
54T_1H_1500 0.5 13,541.0
54T_1F_1500 1 9433.5
54T_2F_1500 2 6893.0
54T_CL_3000 3000 0 28,324.7
54T_1H_3000 0.5 26,278.0
54T_1F_3000 1 17,466.6
54T_2F_3000 2 12,435.0