Journal
MATERIALS AND STRUCTURES
Volume 41, Issue 9, Pages 1571-1579Publisher
SPRINGER
DOI: 10.1617/s11527-007-9349-3
Keywords
Corrosion inhibitor; Gas permeability; Water permeability; Chloride migration; Concrete
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The effect on transport properties of admixing corrosion inhibitor in Portland cement based concrete is studied experimentally in this paper. Two commonly available types of corrosion inhibitor have been evaluated: an organic corrosion inhibitor and a nitrite based inhibitor. The gas permeability, water permeability and chloride migration of the resulting concrete were evaluated by means of standard test methods. In some cases, 1% sodium chloride was added to the concrete. It is found that both types of corrosion inhibitor lead to higher transport coefficients. The increment caused by the nitrite based inhibitor is higher than for the amine-ester based inhibitor. The influence of sodium chloride addition during mixing is not prominent. The obtained transport properties are analysed and discussed by means of BSE experiments and image analysis.
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