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http://dx.doi.org/10.11112/jksmi.2014.18.5.027

Influence of Carbonation of Concrete on Electrical Resistivity  

Yoon, In-Seok (인덕대학교 건설정보공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.18, no.5, 2014 , pp. 27-33 More about this Journal
Abstract
Electrical resistivity of concrete can be measured in a more rapid and simple way for estimating durability of the concrete, however, carbonation causes a result of misleading for durability testing because carbonation leads to a significant reduction in the permeability and porosity of concrete. The purpose of this study is to estimate and quantify the effect of carbonation of concrete on a surface electrical resistivity measurement. Samples of three mixes with difference w/c were prepared and exposed in a carbonation chamber for 330 days. The results show that carbonation leads high electrical resistivity. The increase is substantial and has been shown to proportional to the extent of the carbonation by some of extent. The relationship between electrical resistivity and carbonation depth is taken in the study. Resistivity ratio of carbonated concrete to air concrete decreased significantly from the specific carbonation depth, however, resistivity ratio of carbonated concrete to air concrete had a linear relation with carbonation depth. From the relationship between electrical resistivity and carbonation depth, it is expected that the result should be subsequently used as a calibration curve for estimating carbonated concrete to overcome the interruption effect of carbonation on regular measurements of the electrical resistivity.
Keywords
Electrical resistivity; Carbonation; Durability; Micro-structure properties;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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