Effects of Elevated Temperatures on the Compressive Strength Capacity of Concrete Cylinders Confined with FRP Sheets: An Experimental Investigation

Table 3

Test results of the unconfined specimens.

Average compressive strength (MPa)
Temperature	Exposure time (h)
	1 h	2 h	3 h
100°C	21.72 ± 0.8	20.41 ± 0.6	18.64 ± 0.5
200°C	23.03 ± 1.4	19.44 ± 1.2	18.62 ± 1.3
300°C	20.19 ± 0.5	18.90 ± 1.3	18.57 ± 0.9
Room	21.44 ± 0.7