Table 3 Polarization resistance (rp), % inhibition efficiency (IE) and thickness of film formed on the control and GA inhibited surfaces of rebars after 6 and 37 cycles of wet/dry treatments of mortars.
Additives | Cycle 6 | Cycle 37 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
R0 KOhm .cm2 | Rct, Kohm.cm2 | Rp Kohm.cm2 | % IE | Thickness, nm | R0 KOhm.cm2 | Rct, Kohm.cm2 | Rp Kohm.cm2 | % IE | Thickness, nm | |
Control | 0.22 | 13.26 | 13.04 | - | 0.59 | 0.18 | 3.36 | 3.18 | - | 0.49 |
0.0625% GA | 1.05 | 70.58 | 69.53 | 81.2 | 5.22 | 2.04 | 74.32 | 72.28 | 95.6 | 4.65 |
0.125% GA | 1.10 | 77.37 | 76.27 | 82.9 | 8.52 | 2.09 | 81.93 | 79.84 | 96.0 | 7.47 |
0.25% GA | 1.78 | 75.67 | 73.89 | 82.2 | 8.56 | 2.12 | 80.11 | 77.99 | 95.9 | 5.19 |
