NS-EN 14038-2:2020
钢筋混凝土的电化学再碱化和氯化物萃取处理 第2部分：氯化物萃取

Electrochemical realkalization and chloride extraction treatments for reinforced concrete - Part 2: Chloride extraction

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标准号

NS-EN 14038-2:2020

发布

2020年

发布单位

SCC

当前最新

NS-EN 14038-2:2020

 

 

适用范围

  Full Description ADOPTED_FROM:EN 14038-2:2020 This document specifies a procedure for carrying out impressed current electrochemical chloride extraction from chloride bearing concrete in existing structures. It is applicable to atmospherically exposed parts of structures with ordinary reinforcement and/ or post-tensioned tendon ducts embedded in concrete. In the latter case, it is essential to verify that there is no risk of hydrogen embrittlement, if necessary by conducting trials and installing monitoring during the treatment. This document does not apply to concrete containing pre-stressing steel, which can suffer hydrogen embrittlement during chloride extraction, or to concrete containing coated or galvanized reinforcement. In case of post-tensioned, pre-stressing concrete, the endangered tendon strands can be shielded by the tendon ducts from unwanted and/or exceeded polarization into the cathodic range and respective water reduction.

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