The influence of defects at the steel/concrete interface for chloride-induced pitting corrosion of naturally-deteriorated 20-years-old specimens studied through X-ray Computed Tomography

Journal Article (2020)
Author(s)

Emanuele Rossi (TU Delft - Materials and Environment)

Rob B. Polder (RPCP, TU Delft - Materials and Environment)

O Çopuroǧlu (TU Delft - Materials and Environment)

Timo G. Nijland (TNO)

B Šavija (TU Delft - Materials and Environment)

Research Group
Materials and Environment
Copyright
© 2020 E. Rossi, R.B. Polder, Oguzhan Copuroglu, Timo Nijland, B. Šavija
DOI related publication
https://doi.org/10.1016/j.conbuildmat.2019.117474
More Info
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Publication Year
2020
Language
English
Copyright
© 2020 E. Rossi, R.B. Polder, Oguzhan Copuroglu, Timo Nijland, B. Šavija
Research Group
Materials and Environment
Bibliographical Note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.@en
Volume number
235
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Abstract

Although reinforcement corrosion is a well-known issue, which are the locations of the steel/concrete interface most sensitive to pitting corrosion is still an unclear issue. In this study, X-ray computed tomography is used to characterize eight 20-years-old reinforced concrete cores naturally deteriorated due to chloride-induced corrosion. The deepest and most frequent corrosion pits were observed at the portion of the reinforcement oriented to the outdoor environment and in proximity to interfacial air voids. Therefore, the presence of interfacial air voids should be considered as a relevant factor when assessing the risk of corrosion of reinforced concrete structures.

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