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AuthorRadwan A.B.
AuthorSliem M.H.
AuthorYusuf N.S.
AuthorAlnuaimi N.A.
AuthorAbdullah A.M.
Available date2020-04-01T06:50:39Z
Publication Date2019
Publication NameScientific Reports
ResourceScopus
ISSN20452322
URIhttp://dx.doi.org/10.1038/s41598-019-54669-y
URIhttp://hdl.handle.net/10576/13584
AbstractAggressive operational conditions e.g. saline media and acidic gases, e.g., CO2 can increase the corrosion rate of reinforcing steel. Accordingly, the necessity to protect the steel under the above conditions without affecting the mechanical properties of the concrete is growing. Herein, the inhibition efficiency of a new corrosion inhibitor, behentrimonium chloride (BTC, C25H54ClN), is explored in a simulated-concrete pore solution (SCP) with 3.5 wt.% NaCl at different pH using electrochemical impedance spectroscopy (EIS) and polarization methods. Using only a 50 ?mol L?1 of BTC, we are able to measure an inhibition efficiency of 91, 79, and 71% in SCP solution with 3.5% NaCl at pH of 12.5, 10 and 7, respectively without showing any effect on the mechanical properties on the cured mortars. Temkin isotherm is used to describe the physisorption of BTC inhibitor on the steel surface. Also, the adsorption and influence of the inhibitor on the metal surface are characterized using the scanning electron microscopy, atomic force microscopy, and X-ray photoelectron spectroscopy. In conclusion, this new inhibitor shows high corrosion inhibition efficiencies under different aggressive conditions and can be used in concrete to reduce the corrosion rate of reinforcing steel without decreasing the mechanical properties of the concrete. - 2019, The Author(s).
SponsorThe publication of this article was funded by the Qatar National Library.
Languageen
PublisherNature Research
SubjectReinforced concrete
Corrosion
Simulated concrete
TitleEnhancing the corrosion resistance of reinforcing steel under aggressive operational conditions using behentrimonium chloride
TypeArticle
Issue Number1
Volume Number9
dc.accessType Open Access


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