Library
local_library Home Repository

Analysis of naturally-generated corrosion products due to chlorides in 20-year old reinforced concrete

An elastic modulus-mineralogy characterization

Journal Article (2021)
Authors

Emanuele Rossi (TU Delft - Materials and Environment)

Hongzhi Zhang (Shandong University)

S.J. Garcia (Novel Aerospace Materials)

Johan Bijleveld (Novel Aerospace Materials)

Timo Nijland (TNO)

O Copuroglu (TU Delft - Materials and Environment)

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

Branko Šavija (TU Delft - Materials and Environment)

Research Group
Materials and Environment
Copyright
© 2021 E. Rossi, Hongzhi Zhang, Santiago J. Garcia, J.C. Bijleveld, Timo G. Nijland, Oguzhan Copuroglu, R.B. Polder, B. Šavija
To reference this document use:
https://doi.org/10.1016/j.corsci.2021.109356
More Info
expand_more
Publication Year
2021
Language
English
Copyright
© 2021 E. Rossi, Hongzhi Zhang, Santiago J. Garcia, J.C. Bijleveld, Timo G. Nijland, Oguzhan Copuroglu, R.B. Polder, B. Šavija
Research Group
Materials and Environment
Volume number
184
Pages (from-to)
1-13
DOI:
https://doi.org/10.1016/j.corsci.2021.109356
Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Abstract

The elastic modulus of corrosion product (Ecp) has been reported with significant variations in the literature. This study aims to investigate the Ecp of naturally-generated chloride-induced corrosion products formed in different concrete mixes. Microstructural characterization was conducted through nano-indentation, electron microscopy and Raman spectroscopy. The corrosion products were mainly composed of a goethite matrix with portions of maghemite, independently of the concrete composition. Microscopic analysis suggest that layers of corrosion products grow at different times and under different physico-chemical conditions. Our measurements showed that Ecp varied between 80−100 GPa, which can be suggested for numerical models of corrosion induced cracking.