Effect of Red Mud on the Corrosion of Reinforced Concrete Studied by Electrochemical Impedance Spectroscopy

Table 2

EIS results of the corrosion resistance, 𝑅_𝑏 (Ohms), of reinforced concrete without red mud (reference) and with different red mud contents (10, 20, and 30 wt%).

Age (months)	Corrosion resistance, 𝑅𝑏 (Ω)
	Reference (0%)	10%	20%	30%
1	9527.4	15453.0	13934.0	13763.0
2	7494.8	8224.7	9671.6	21304.7
3	15528.7	18036.7	25407.7	23312.8
5	31113.7	27623.3	64915.7	39640.9
7	6867.0	5536.7	3566.5	3387.6
9	7615.7	5079.7	6112.0	5731.2
11	7914.2	3239.3	3790.7	3586.3
13	13188.5	5983.1	4773.3	4580.9