Effect of High Rebar Temperature During Casting on Corrosion in Carbonated Concrete

Inspector Measuring Corrosion Rate in Concrete Bridge
Inspector Measuring Corrosion Rate in Concrete Bridge

Giatec would like to congratulate Lijie Chen and Ray Kai Leung Su of Hong Kong for their publication of “Effect of High Rebar Temperature During Casting on Corrosion in Carbonated Concrete” in Construction and Building Materials journal.

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This paper was researched with the help of Giatec’s iCOR® device, a non-destructive concrete testing tool for detailed corrosion evaluation of reinforced concrete structures, half-cell potentional, and in-situ electrical resistivity of concrete.

Abstract
The heated bar effect on the corrosion rate, corrosion potential and resistivity of partially carbonated concrete is discussed in this paper. The potential use of pulverized fuel ash (PFA) as a substitute for cement to mitigate the heated bar effect is explored. It is found that the heated bar effect can lead to an increase in the corrosion level. The moisture content of concrete noticeably affects the heated bar effect on the corrosion performance of partially carbonated concrete.

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