PREN 12390-18-2018
测试硬化混凝土 第18部分：氯离子迁移系数的测定

Testing hardened concrete - Part 18: Determination of the chloride migration coefficient

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标准号

PREN 12390-18-2018

发布

2018年

发布单位

CEN - European Committee for Standardization

当前最新

PREN 12390-18-2018

 

 

适用范围

This document describes the procedure for obtaining the non-steady-state chloride migration coefficient of specimens of hardened concrete at a specified age. The test procedure does not take into account any interaction of concrete with the saline solution over time. The test result is a durability indicator with respect to the resistance of the concrete investigated against chloride penetration. The test procedure does not apply to concrete specimens with surface treatments such as silanes. If the aggregate is electrically conductive or porous this will influence the magnitude of chloride migration. This fact is taken into account when establishing threshold values. It prevents comparison of chloride migration values between concretes if the aggregates show a difference of half an order of magnitude (higher or lower) of chloride migration. Similar influence may be seen when metallic or electrically conducting fibres or particles are present.

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