Influence of Concrete Moisture Condition on Half-Cell Potential Measurement

Sylvia Keßler, Christoph Gehlen

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations

Abstract

The detection of on-going corrosion is one of the main issues during inspection of reinforced concrete structures. The half-cell potential measurement method is the most common and established non-destructive technique to support this task. But a lot of infrastructures are exposed to rain or seawater, which can cause heterogeneous moisture condition within one component. In turn, this can have influence on the potential mapping results, and as a consequence, the interpretability of the half-cell potential measurement is impaired. This paper focuses on the influence of concrete moisture condition on half-cell potential measurement. Laboratory and practical tests' results are analyzed qualitatively with varying moisture conditions due to natural exposure as well as with different prewetting conditions. On the basis of these results, recommendations are made how to evaluate half-cell potential mapping results. If large structures are inspected by half-cell potential measurements, it is advantageous to compare only these parts, which are in a comparable moisture condition by subdivision of the structure.

Original languageEnglish
Pages257-264
Number of pages8
StatePublished - 2016
Event5th International Conference on Durability of Concrete Structures, ICDCS 2016 - Shenzhen, Guangdong Province, China
Duration: 30 Jun 20161 Jul 2016

Conference

Conference5th International Conference on Durability of Concrete Structures, ICDCS 2016
Country/TerritoryChina
CityShenzhen, Guangdong Province
Period30/06/161/07/16

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