Table 2 Electrochemical Impedance parameters, double layer capacitance and thickness of passive film formed on the surface of rebars embedded in mortars determined after 6 and 37 cycles of wet/dry treatments.

From: Kinetics and mechanism of gallic acid as an ecofriendly corrosion inhibitor for steel rebars in mortar

Additives

Cycle 6

Cycle 37

R0

(KOhm .cm2

Rct, Kohm.cm2

Y0

(S.sa / cm2)

x10-6

Α

Cdl,µF cm-2

Thickness, nm

R0

(KOhm .cm2

Rct, Kohm.cm2

Y0

(S.sa / cm2)

x10-6

α

Cdl,µF cm-2

Thickness, nm

Control

0.22

13.26

336.0

0.55

39.6

0.59

0.18

3.36

378.6

0.56

46.5

0.49

Methanol

0.23

13.15

332.5

0.56

44.7

0.51

0.21

3.38

373.9

0.55

46.0

0.50

0.0625%GA

1.05

70.58

20.0

0.80

7.6

3.02

2.04

74.32

19.2

0.80

8.54

2.69

0.125%GA

1.10

77.37

14.5

0.79

4.6

4.93

2.09

81.93

17.8

0.82

5.33

4.32

0.25%GA

1.78

75.67

12.7

0.79

4.6

4.95

2.12

80.11

16.1

0.82

7.65

3.00

Back to article page