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Use of Green Inhibitors for Concrete Armor Protection Against H2SO4 Corrosion
Corresponding Author(s) : A. Lame (Galo)
Asian Journal of Chemistry,
Vol. 25 No. 7 (2013): Vol 25 Issue 7
Abstract
The aim of this study to use the green inhibitors, friendly with environment and investigation of their efficiency in corrosion protection. As green inhibitor, is used one kind of polysaccharide (galactomannan), extracted from the endosperms of some leguminosae plants as coffee beans and chickpeas. Corrosion efficiency of these extracts in sulfuric acid media in presence of chloride ions (blank) was tested for low alloy carbon steels marked as: Steel 39, Steel 44 and iron B-500 (applied to concrete as reinforcing bars). The concentrations of aggressive species are: 1 mol/L H2SO4 + 10-3 mol/L Cl– (in form of NaCl). The efficiency of these extracts, at certain concentration (0.75 g/L), against blank, initially was investigated by mass loss measurements. The results compared with protection efficiency of (I–) ions, which are added in blank as KI with 0.01 mol/L. The electrochemical techniques as potentiodynamic polarization, accompanied with work surface microscope study, are used for optimization of inhibitor concentration. The inhibition action of galactomannan was discussed in terms of its horizontal adsorption.
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- Behzad Bavarian and Lisa Reiner, Corrosion Protection of Steel Rebar in Concrete with Optimal Application of Migrating Corrosion Inhibitors, MCI 2021 & 2022, pp. 2-3 (2003).
- J.M. Chi, Ran Huang and C.C. Yang, J. Marine Sci. Technol., 10, 14 (2002).
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- A.S. Abdulrahman, M. Ismail and M.S. Hussain, Scient. Res. Essays, 6, 4152 (2011)
- M. Ormellese, M. Berra, F. Bolzoni and T. Pastore, Cement Concrete Res., 36, 536 (2006).
- M. Abdallah, Portugal. Electrochim. Acta, 22, 161 (2004).
- E. Kokalari (Teli), A. Lame et al., The Extraction of Galactomannan from the Endosperm of Coffee bean (Pretreated of Toluene), In Order to be used as Corrosion Inhibitor, Bulletin of Natural Sciences, Special Volume, pp. 256-263 (2011).
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- E. Bardal, Engineering Materials and Processes, Corrosion and Protection, Springer-Verlag Limited, ISBN 1-855233-758-3, London Berlin Heidelberg, pp. 5-10 (2004).
- R.G. Kelly, J.R. Scully, D.W. Shoesmith and R.G. Buchheit, Electrochemical Techniques in Corrosion Science and Engineering, United State of America, pp. 139-146, 361-371 (2002).
- F. Bentiss, M. Lebrini, M. Traisnel and M. Lagrenée, J. Appl. Electrochem., 39, 1399 (2009).
- Z. Szklaroska-Smialowska, Inhibition of Localized Corrosion, (7SEIC), Ann. Univ. Ferrara, N.S., Sez.V Suppl. N. 9, p. 979 (1990).
References
Behzad Bavarian and Lisa Reiner, Corrosion Protection of Steel Rebar in Concrete with Optimal Application of Migrating Corrosion Inhibitors, MCI 2021 & 2022, pp. 2-3 (2003).
J.M. Chi, Ran Huang and C.C. Yang, J. Marine Sci. Technol., 10, 14 (2002).
D. Jana and B. Erlin, Concrete Internat., 29, 61 (2007).
S.-H. Han and W.-S. Park, Coastal Engineering and Energy Research Department, Korea Ocean Research and Development Institute, Estimation of Carbonation Depth for Concrete Structure in Coastal Area, The International Society of Offshore and Polar Engineers (ISOPE), Ansan, Republic of Korea, p. 510 (2009).
A.S. Abdulrahman, M. Ismail and M.S. Hussain, Scient. Res. Essays, 6, 4152 (2011)
M. Ormellese, M. Berra, F. Bolzoni and T. Pastore, Cement Concrete Res., 36, 536 (2006).
M. Abdallah, Portugal. Electrochim. Acta, 22, 161 (2004).
E. Kokalari (Teli), A. Lame et al., The Extraction of Galactomannan from the Endosperm of Coffee bean (Pretreated of Toluene), In Order to be used as Corrosion Inhibitor, Bulletin of Natural Sciences, Special Volume, pp. 256-263 (2011).
M.G. Fontana, Corrosion Engineering, ISBN 0-07-021463-8, Printed in the United States of America, edn 3, pp. 171-174; 153-164; 198-202 (1986).
E. Bardal, Engineering Materials and Processes, Corrosion and Protection, Springer-Verlag Limited, ISBN 1-855233-758-3, London Berlin Heidelberg, pp. 5-10 (2004).
R.G. Kelly, J.R. Scully, D.W. Shoesmith and R.G. Buchheit, Electrochemical Techniques in Corrosion Science and Engineering, United State of America, pp. 139-146, 361-371 (2002).
F. Bentiss, M. Lebrini, M. Traisnel and M. Lagrenée, J. Appl. Electrochem., 39, 1399 (2009).
Z. Szklaroska-Smialowska, Inhibition of Localized Corrosion, (7SEIC), Ann. Univ. Ferrara, N.S., Sez.V Suppl. N. 9, p. 979 (1990).