Residual Compressive Strength of High-Strength Concrete Exposed to Elevated Temperatures

Table 3

Statistics of input parameters (485 data points).

Statistical parameter	Aggregate/binder ratio, a/b	Water/binder ratio, w/b	Heating rate, Hr (°C/min)	Elevated temperature, T (°C)	Concrete strength at room temperature, (MPa)
Min. value	0.82	0.13	0.50	50	41.5
Max. value	4.59	0.60	20.0	1200	140.6
Mean	2.29	0.36	5.78	479	67.3
Standard deviation (SD)	0.65	0.11	5.74	261	19.7
Coefficient of variation (CV) (%)	28.2	31.2	99.4	54.5	29.2
Skewness	0.232	0.564	1.507	0.529	0.646
Kurtosis	−0.042	−0.569	1.235	−0.255	0.263