Bond Effects between Concrete and Steel Bar Using Different Diameter Bars and Different Initial Crack Width

Table 8

Pull-out forces and bond strength of all specimens.

Crack width	Bar diameter 10 mm			Bar diameter 14 mm			Bar diameter 18 mm
	Specimen name	Pull-out force kN	Bond strength MPa	Specimen name	Pull-out force kN	Bond strength MPa	Specimen name	Pull-out force kN	Bond strength MPa
0	COD10RE	19.18	9.95	C0D14RE	41.05	10.86	C0D18RE	65.46	10.48
0	COD10WD	23.12	11.99	C0D14WD	42.32	11.20	C0D18WD	63.87	10.22
80	C80D10WD	17.99	9.33	C80D14WD	33.68	8.91	C80D18WD	50.52	8.08
150	C150D10WD	23.08	11.96	C150D14WD	43.60	11.53	C150D18WD	64.68	10.35
210	C210D10WD	19.85	10.29	C210D14WD	48.22	12.76	C210D18WD	65.66	10.51