What is BS EN 14038-2 about?
BS EN 14038 discusses electrochemical re-alkalization and chloride extraction treatments for reinforced concrete. BS EN 14038-2 is an international standard for chloride extraction for reinforced concrete.
BS EN 14038-2 is the second part of a multi-part series that specifies a procedure for carrying out impressed current electrochemical chloride extraction from chloride-bearing concrete in existing structures.
BS EN 14038-2 applies to atmospherically exposed parts of structures with ordinary reinforcement and the post-tensioned tendon ducts that are embedded in concrete.
Under BS EN 14038-2 in the case of post-tensioned and pre-stressing concrete, tendon strands can be shielded by the tendon ducts for unwanted and exceeded polarization into the cathode range.
Under BS EN 14038-2 it is essential to verify that there is no risk of hydrogen embrittlement by conducting trials and installing monitoring during the treatment.
Note 1: BS EN 14038-2 does not apply to concrete that contains pre-stressing steel, which can suffer hydrogen embrittlement during chloride extraction, or to concrete that contains coated or galvanized reinforcement.
Note 2: Under BS EN 14038-2 it is assumed that the design and execution of a chloride extraction application are entrusted to appropriately qualified, competent and experienced people, for whose use it has been prepared.
Who is BS EN 14038-2 for?
BS EN 14038-2 on chloride extraction is relevant to:
- Civil engineers
- Metallurgists
- Chemical engineers
Why should you use BS EN 14038-2?
Chloride extraction rehabilitates a reinforced concrete part from corrosion activity and provides long-term corrosion protection of steel reinforcement in concrete to the part which has been affected by chloride. The duration of this treatment depends on various factors like the amount and ingress depth of accumulated chloride, the layout of the reinforcement, and other factors.
BS EN 14038-2 provides guidance regarding chloride extraction for concrete part of structures to reinforce concrete part from corrosion activity.
Procedures under BS EN 14038-2 assist in protecting concrete structures which are affected by chloride against corrosion activities.
By adopting chloride extraction treatment under BS EN 14038-2 the efficiency and value of the concrete structures can be maintained and concrete structures can also be saved from getting deteriorated.
What’s changed since the last update?
BS EN 14038-2:2020 supersedes DD CEN/TS 14038-2:2011 which is withdrawn. The main changes with respect to the previous edition are:
- Under 7.2.2 “Anode” has been complemented by requirements for the used anodes
- Addition of requirements for anode zone
- Addition of note to “Power supply”
- The bibliography has been supplemented with several publications
