B 03 E

Electrochemical Half-Cell Potential Measurements for the Detection of Reinforcement Corrosion

April 2014, 21 p.

Kategorie: DGZfP-Regelwerke, engl.

This specification describes the application of electrochemical half-cell potential measurements (frequently also called potential mapping) for the detection of reinforcement corrosion in reinforced concrete structures. Areas of corroding reinforcement steel can be located in a non-destructive manner by means of this procedure. Half-cell potential measurements are used in order to detect chloride-induced corrosion. However, it is not recommended in order to assess the risk of carbonation depth and the concrete cover appear to be more appropriate. Half-cell potential measurements can be used for:
– the detection of actively corroding areas
– the assessment regarding extent and distribution of reinforcement corrosion in reinforced concrete structures
– the planning of repair measures
– repetitive control and monitoring

  1. Purpose and range of application
  2. Qualification of the measurement technicians
  3. Limits of application of the electrochemical half‐cell potential measurement method for reinforced concrete structures
  4. Description of the procedure
  5. Equipment and on‐site conditions
  6. Taking measurements
  7. Evaluation and interpretation
  8. Information on calls for tender
  9. References
  10. Related literature
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