Performance of Anticorrosive Measures of Steel in Concrete Infrastructure by Plant-Based Extracts

Competence to combat corrosion of steel-reinforced concrete (SRC) infrastructures for long periods has become a fascinating topic for corrosion scientists. The longevity of such infrastructures is limited mainly by the corrosion process. Hence, urgent demands for developing effective and practical methods are necessary to minimize the corrosion of such concrete structures. The anti-corrosive components can be designed from the green plants' parts to mitigate the SRC corrosion in recent years. The ongoing research aims to substantiate the success of the leaf extract of Psidium guajava (LEPG) and its 50% blend (BnD) with the leaf extract of Mangifera indica (LEMI) for assessing the steel corrosion condition in a concrete slab. For this purpose, a fast corrosion potential monitoring (CPM) method is applied per the ASTM procedure. Outcomes of the work summarized that the additions of 500-4000 ppm LEPG and its 50% BnD blend have significant corrosion-inhibiting action. The corrosion potential (& phi;(corr)) shifts toward a less corrosion-risk area of the steel bar for 6 months at ambient conditions.