Title:
Measurement of Concrete Resistivity for Assessment of Corrosion Severity of Steel Using Wenner Technique
Author(s):
K. R. Gowers and S. G. Millard
Publication:
Materials Journal
Volume:
96
Issue:
5
Appears on pages(s):
536-541
Keywords:
concretes; corrosion; reinforcement; steels; tests
DOI:
10.14359/655
Date:
9/1/1999
Abstract:
The Wenner technique is becoming increasingly popular for measuring resistivity of reinforced concrete to assess the rate of corrosion of the steel reinforcement once it becomes depassivated by chloride attack or by carbonation. This paper summarizes work carried out over several years at the University of Liverpool in assessing the efficiency of this technique. Several sources of measurement error are identified, and recommendations are put forward to enable engineers to obtain more accurate results when using this technique in practical situations, and hence to evaluate the severity of ongoing corrosion problems.