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BS EN 14038-1:2016:2022 Edition

BS EN 14038-1:2016:2022 Edition

$102.76

Electrochemical realkalization and chloride extraction treatments for reinforced concrete – Realkalization

Published By Publication Date Number of Pages
BSI 2022 22
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This European Standard specifies a procedure for carrying out impressed current electrochemical realkalization (ER) of carbonated reinforced concrete in existing structures. It is applicable to atmospherically exposed parts of structures with ordinary reinforcement embedded in concrete.

This European Standard 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.

NOTE

In case of post-tensioned prestressing concrete, the endangered tendon strands may be shielded by the tendon ducts from unwanted and/ or exceeded polarization into the cathodic range and respective water reduction.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 Contents Page
6 European foreword
7 Introduction
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 General
4.1 Quality management systems
4.2 Personnel
5 Principle
10 6 Assessment and repair of the structure
6.1 General
6.2 Review of records
6.3 Inspection
6.4 Carbonation depth measurement
6.4.1 General
6.4.2 Determination of chloride content
11 6.5 Concrete cover thickness and reinforcement location measurements
6.6 Alkali aggregate reaction
6.7 Reinforcement continuity and size
6.8 Repair
6.8.1 General
6.8.2 Concrete removal
6.8.3 Reinforcement preparation
12 7 Materials and apparatus
7.1 Calibration of instrumentation
7.2 Anode system
7.2.1 General
7.2.2 Anode
7.2.3 Anode zone
7.2.4 Alkaline electrolyte solution
7.3 Electric cables
13 7.4 Power supply
8 Installation procedures
8.1 Electrical continuity of reinforcement
8.2 Performance monitoring
8.3 Installation of anode system
14 8.4 Protection of electrolyte solution
8.5 Electrical installation
8.6 Preliminary testing and documentation
9 Commissioning, operation and termination of treatment
9.1 Visual inspection
9.2 Energizing and adjustment of current output
9.3 Routine inspection and maintenance
15 9.4 Realkalization process monitoring
9.5 Termination of treatment
10 Final report
16 11 Post-treatment coating and monitoring
17 Bibliography

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BS EN 14038-1:2016
$102.76