Biological Corrosion Inhibitors for Concrete


Biological Corrosion Inhibitors for Concrete

M. Kanwal, R. Bagheri, A.G. Wattoo, M.I. Irshad, R.A. Khushnood, Z. Song

Corrosion in the reinforced concrete structures is a promising concern for material and structural engineers. Chemical corrosion inhibitors are usually suggested by the corrosion specialists in this regard, which adds an enormous amount of cost to the total materials charges and some are harmful to life forms. Therefore, some green corrosion inhibitors are introduced in this study which are relatively cheaper and holds good compatibility with concrete. We have highlighted the mechanisms of protection, advantages and disadvantages of different green biological corrosion inhibitors by broadly categorizing them into two types. This classification is based on the origin and mechanism of corrosion inhibition of the respective class. The first class is microbial inhibitors which prevent the onset of corrosion by making biofilms and precipitating calcite on steel surface and concrete voids respectively. And the second class is of botanical inhibitors which are the extracts of plants and protect the steel bars by forming biofilms. So both of the biological inhibitors are efficient to eliminate the corrosion of reinforced concrete structures.

Green Corrosion Inhibitors, Concrete, Biological Inhibitors, Biofilm, Calcite

Published online 11/3/2020, 21 pages

Citation: M. Kanwal, R. Bagheri, A.G. Wattoo, M.I. Irshad, R.A. Khushnood, Z. Song, Biological Corrosion Inhibitors for Concrete, Materials Research Foundations, Vol. 86, pp 183-203, 2021


Part of the book on Theory and Applications of Green Corrosion Inhibitors

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