The International Information Center for Geotechnical Engineers

Wednesday, 26 July 2017 14:49

How to Perform and Report Half Cell Corrosion Mapping

Half Cell corrosion mapping is an effective method for assessing the severity of corrosion in reinforced concrete structures.

This rapid, cost-effective and non-destructive survey method provides key information in corrosion evaluations. Corrosion of steel reinforcement is a major factor in the deterioration of highway and bridge infrastructure and half cell corrosion mapping can be used to detect corrosion, as well as being the first step towards its rehabilitation. It can also be used as a quality assurance tool in the repair and rehabilitation of concrete structures and as a predictor of remaining service life.

 The most practical way to determine the severity of corrosion in reinforcement steel is to measure its corrosion potential. This is done with the use of a standard portable half-cell, normally a copper/copper sulphate (Cu/ CuSO4) standard reference electrode. The reference electrode is connected to the negative end of a voltmeter and the positive end of the voltmeter is connected to the reinforcement steel. Depending on the measured half cell corrosion potential value, the probability of active corrosion is determined.

Check our here  Humboldt's latest blog post to see how to perform Half Cell Corrosion Mapping 

Source: Humboldt

Read 187 times Last modified on Wednesday, 26 July 2017 14:59

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