Bond Behavior between Steel Rebar and RCA Concrete after Exposure to Elevated Temperatures

Table 3

The variation parameter and the number of tested specimens.

No.	r (%)	T (°C)	t (h)	n1	n2
NC	0	20	1	6	3
	0	200	1	6	3
	0	400	1	6	3
	0	600	1	6	3
	0	600	0.5	6	3
	0	600	2	6	3
RAC50	50	20	1	6	3
	50	200	1	6	3
	50	400	1	6	3
	50	600	1	6	3
	50	600	0.5	6	3
	50	600	2	6	3
RAC100	100	20	1	6	3
	100	200	1	6	3
	100	400	1	6	3
	100	600	1	6	3
	100	600	0.5	6	3
	100	600	2	6	3

r denotes the RCA replacement ratio; T is exposure temperature; t is exposure time; n₁ is the number of tested pullout specimens; n₂ is the number of tested cubic specimens.