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Effect of C5H11NO2S on Reinforcing-Steel Corrosion in Concrete Immersed in Industrial/Microbial Simulating-Environment

Okeniyi, Joshua Olusegun and Abioye, Abiodun Oyekola and Adikpewun, Zechariah Chiwonsoko and Otesanya, Adeola Abigail and Eleshin, Michael Damilola and Gabriel, Olanrewaju Oyewale and Adeoye, Oluyori (2017) Effect of C5H11NO2S on Reinforcing-Steel Corrosion in Concrete Immersed in Industrial/Microbial Simulating-Environment. In: Proceedings of the 3rd Pan American Materials Congress. The Minerals, Metals & Materials Series (1). Springer International Publishing, Springer, Cham, pp. 191-203. ISBN 978-3-319-52131-2

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Abstract

In this paper, C5H11NO2S (Methionine) effect on reinforcing-steel corrosion in concrete immersed in 0.5 M H2SO4, simulating industrial/microbial environment, was studied by electrochemical techniques of open circuit potential and corrosion rate. The corrosion test-data were subjected to statistical distribution and tests of significance analyses prescribed by ASTM G16-95 R04. From this, analyzed results showed that the corrosion rate test-data followed the Weibull more than the Normal while the corrosion potential test-data followed both distributions. In spite of these, both the corrosion potential and the corrosion rate models still find agreements in corrosion criteria classification for the tested samples. Samples with C5H11NO2S admixture exhibited corrosion rate reductions compared to the control samples. By this, 0.25% C5H11NO2S admixture (i.e. wt% cement) exhibited optimal inhibition efficiency, η = 87.95 ± 7.64%, on steel-rebar corrosion in the 0.5 M H2SO4-immersed concrete. Experimental data fitted Flory-Huggins adsorption isotherm that indicated physisorption as the prevailing mechanism of C5H11NO2S corrosion-protection on the reinforcing-steel in the industrial/microbial simulating-environment.

Item Type: Book Section
Uncontrolled Keywords: Methionine admixture; Steel-rebar corrosion; Industrial/microbial simulating-environment; Statistical tests of significance; Corrosion inhibition efficiency
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Q Science > QD Chemistry
T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TD Environmental technology. Sanitary engineering
T Technology > TH Building construction
T Technology > TP Chemical technology
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Faculty of Engineering, Science and Mathematics > School of Mathematics
Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Dr Joshua Olusegun Okeniyi
Date Deposited: 28 Aug 2017 04:07
Last Modified: 28 Aug 2017 04:07
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/8752

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