Spatial distribution of crystalline corrosion products formed during corrosion of stainless steel in concrete
Type
ArticleAuthors
Serdar, MarijanaMeral, Cagla
Kunz, Martin
Bjegovic, Dubravka
Wenk, Hans-Rudolf
Monteiro, Paulo J. M.

KAUST Grant Number
KUS-l1-004021Date
2015-05Permanent link to this record
http://hdl.handle.net/10754/599685
Metadata
Show full item recordAbstract
© 2015 Elsevier Ltd All rights reserved. The mineralogy and spatial distribution of nano-crystalline corrosion products that form in the steel/concrete interface were characterized using synchrotron X-ray micro-diffraction (μ-XRD). Two types of low-nickel high-chromium reinforcing steels embedded into mortar and exposed to NaCl solution were investigated. Corrosion in the samples was confirmed by electrochemical impedance spectroscopy (EIS). μ-XRD revealed that goethite (α-FeOOH) and akaganeite (β-FeOOH) are the main iron oxide-hydroxides formed during the chloride-induced corrosion of stainless steel in concrete. Goethite is formed closer to the surface of the steel due to the presence of chromium in the steel, while akaganeite is formed further away from the surface due to the presence of chloride ions. Detailed microstructural analysis is shown and discussed on one sample of each type of steel.Citation
Serdar M, Meral C, Kunz M, Bjegovic D, Wenk H-R, et al. (2015) Spatial distribution of crystalline corrosion products formed during corrosion of stainless steel in concrete. Cement and Concrete Research 71: 93–105. Available: http://dx.doi.org/10.1016/j.cemconres.2015.02.004.Sponsors
This research was supported by scientific project "The composition of corrosion products on corrosion resistant concrete reinforcement" (Grant No. 73/10), funded by Unity through Knowledge Fund (UKF), and by scientific project "The Development of New Materials and Concrete Structure Protection Systems" (No. 082-0822161-2159), funded by Croatian Ministry of Education, Science and Sport. This publication was based on work supported in part by Award No. KUS-l1-004021, made by King Abdullah University of Science and Technology (KAUST). The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.Publisher
Elsevier BVJournal
Cement and Concrete Researchae974a485f413a2113503eed53cd6c53
10.1016/j.cemconres.2015.02.004