Reduction of Postfire Properties of High-Strength Concrete

Table 2

Hot compressive strength of concrete specimens while heated to a predetermined temperature level—(a).

Property	Temperature level (°C)
	20		200		400		500		600
𝑓𝑐,𝑇 (MPa)	63.6		65.8		51.5		38.7	27.7
	61.8	Mean; 62.2	58.8	Mean; 62.2	47.0	Mean; 50.0	39.9	Mean; 39.9	32.3
	61.3		61.9		51.4		41.1		26.9