CEN/TS 14038-1:2004

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Assessment and repair of the structure
   5.1 General
   5.2 Review of records
   5.3 Inspection
   5.4 Carbonation depth measurement
   5.5 Determination of chloride content
   5.6 Concrete cover thickness and reinforcement location
       measurements
   5.7 Alkali aggregate reaction
   5.8 Reinforcement continuity and size
   5.9 Repair
       5.9.1 General
       5.9.2 Concrete removal
       5.9.3 Reinforcement preparation
6 Materials and apparatus
   6.1 Calibration of instrumentation
   6.2 Anode system
       6.2.1 General
       6.2.2 Anode
       6.2.3 Anode zone
       6.2.4 Alkaline electrolyte solution
   6.3 Electric cables
   6.4 Power supply
7 Installation procedures
   7.1 Electrical continuity
   7.2 Performance monitoring
   7.3 Installation of anode system
   7.4 Protection of electrolyte solution
   7.5 Electrical installation
   7.6 Preliminary testing and documentation
8 Commissioning, operation and termination of treatment
   8.1 Visual inspection
   8.2 Energizing and adjustment of current output
   8.3 Routine inspection and maintenance
   8.4 Realkalization process monitoring
   8.5 Termination of treatment
9 Final report
10 Post-treatment coating and monitoring
Bibliography

This document specifies a procedure for carrying out impressed current electrochemical realkalization of carbonated reinforced concrete in existing structures. It is applicable to atmospherically exposed parts of structures with ordinary reinforcement embedded in concrete.This document does not apply to concrete containing prestressing steel which can suffer hydrogen embrittlement during realkalization, or to concrete containing epoxy-coated or galvanized reinforcement, or if chloride contamination is contributing to reinforcement corrosion.