Bond Behavior of Reinforcing Steel Bars in Thermal Insulation Concrete Exposed to Freeze-Thaw Cycles

Table 10

Experimental results of the bond behavior of the steel bar in the TIC and NC specimens after exposing to different numbers of freeze-thaw cycles.

Type of concrete	Number of freeze-thaw cycles	(MPa)	Su (mm)	Failure mode
TIC	0	28.09	0.64	Shearing
	30	25.19	0.78	Shearing
	50	22.95	0.83	Shearing
	100	19.19	0.93	Shearing
	200	16.54	1.13	Shearing
	300	13.84	1.27	Shearing
NC	0	30.33	0.65	Shearing
	30	24.66	0.80	Shearing
	50	21.76	0.84	Shearing
	100	13.78	1.12	Splitting
	200	12.46	0.91	Splitting