The purpose of this NACE technical committee report is to present state-of-the-art information on electrochemical chloride extraction (ECE) from conventionally reinforced concrete surfaces. Included are discussions of common industry practices used by design engineers to control corrosion of reinforcing steel in portland cement concrete structures through the application of ECE, as well as a schematic diagram of an electrochemical treatment system.
This report is intended for use by engineers attempting to protect corroding reinforced concrete structures by the use of electrochemical treatment techniques. The information presented in this report is limited to ECE for atmospherically exposed reinforced concrete.
Key words: cathodic protection, chlorides, concrete, corrosion protection, electrochemical chloride extraction (ECE), depassivation, desalination, electrochemical, portland cement, realkalization, reinforced concrete, reinforcing steel, NACE Standard TM0294, NACE SP0290, TG 054, TG 920