BS EN 14038-2:2020 PDF Download

BS EN 14038-2:2020 is an international standard that focuses on chloride extraction treatments for reinforced concrete. It is the second part of a multi-part series and specifically addresses the procedure for carrying out impressed current electrochemical chloride extraction from chloride-bearing concrete in existing structures. The standard applies to atmospherically exposed parts of structures with ordinary reinforcement and post-tensioned tendon ducts embedded in concrete.

One important aspect emphasized in BS EN 14038-2 is the verification of the absence of hydrogen embrittlement, which is achieved through trials and monitoring during the treatment process. The standard notes that it does not apply to concrete containing pre-stressing steel that may suffer from hydrogen embrittlement, nor concrete with coated or galvanized reinforcement.

BS EN 14038-2 is intended for use by civil engineers, metallurgists, and chemical engineers involved in chloride extraction for reinforced concrete structures. This standard provides guidance for rehabilitating concrete parts affected by corrosion due to chloride ingress, ensuring long-term corrosion protection for the steel reinforcement and maintaining the efficiency and value of the structures. The recent update, BS EN 14038-2:2020, supersedes the previous edition (DD CEN/TS 14038-2:2011) and includes additional requirements for anodes, anode zones, power supply, and updates to the bibliography.