Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6723166 | Construction and Building Materials | 2014 | 9 Pages |
Abstract
Samples of reinforced mortar specimens (Sps) were studied over 300Â days of exposure in reference, sulfate, and chloride environments. Electrochemical impedance spectroscopy (EIS) was used to investigate external sulfate attack (ESA) in comparison with known chloride models. The study, based on the mortar behavior and its measured electrical properties, highlighted the mechanisms that occur under the pores during the aging. The sulfate samples presented a capacitive behavior at lower frequencies, and the mortar resistance shifted. It was confirmed that EIS is a qualified technique to identify the sulfate attack in concrete by non-destructive methods.
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Authors
Mariana O.G.P. Bragança, Kleber F. Portella, Marcelle M. Bonato, Cláudia E.B. Marino,