Estimation of Corrosion-Free Life for Concrete Containing Ground Granulated Blast-Furnace Slag under a Chloride-Bearing Environment

Table 2

Chloride threshold values from literatures with variation of GGBS replacement.

CTL, % by binder	Replacement, % by binder	Water-to-binder ratio	Chloride source	Corrosion detection	Reference
0.5–1.0	0	0.5–0.7	Internal	Macrocell current	[14]
0.78–0.93	—	0.35–0.55	—	Half-cell potential	[15]
0.74–0.93	—	0.4	—	Polarisation	[2]
0.47–1.52	—	0.45	External	Galvanic current	[16]
0.97	30	0.45	Internal	Half-cell potential	[15]
1.0–1.5	50	0.5–0.6	Internal	Macrocell current	[14]
0.4–0.9	—	0.4	External	Polarisation, galvanostatic pulse	[17]
0.29–0.44	60	0.4	Internal	Polarisation	[2]
0.53–0.80	65	0.4	External	Galvanic current	[16]
0.82–1.14	70	0.48	External	Half-cell potential	[18]