Figure 8

AFM images for the reinforcing steel surface (a,c,e) before and (b,d,f) after immersing the reinforcing steel for 24 h in SCP solution containing 3.5 wt.% NaCl in existence of 50 μmol L⁻¹ of BTC corrosion inhibitor at variable pH values of (a,b) 12.5, (c,d) 10, and (e,f) 7.