Efficiency of Different Electrolytes on Electrochemical Chloride Extraction to Recover Concrete Structures under Chloride-Induced Corrosion

Figure 6

Chloride profiles before and after treatment using lithium borate as electrolyte for at 2 A/m² constantly for 4 weeks, in terms of (a) total, (b) free, and (c) bound chlorides. (a) Total: acid soluble titration against silver nitrate at the ambient temperature. (b) Free: water soluble chlorides dissolved in 50°C distilled water. (c) Bound: value obtained by subtracting the free chlorides concentration from the total at each depth.

(a)

(b)

(c)