Evaluation of Corrosion Inhibition on Rebar using Pomegranate Peel Extract as Organic Inhibitor

Abstract

Abstract. Concrete is well known for its binding nature and Compressive strength. However, the tensile strength of the concrete is not so sufficient. Hence to improve the tensile nature and to enhance the flexibility in concrete steel rod is introduced as reinforcement. The rebar provides sufficient flexural strength to the concrete. Thus, the reinforced concrete is used in construction for its ease of access and long life. The major issue and problem faced by the rebar in concrete is corrosion which leads to reduction in the strength and age of the structure. The main objective of this research is to provide the protection for steel rebar against corrosion which improves the life of the structure. Many researchers worked on this to find a solution for corrosion. Corrosion inhibitors is one among the best method which helps us to protect the steel against corrosion. The pomegranate fruit which is highly antioxidant can fight against corrosion. An extract was obtained from pomegranate peel powder which can act as an organic inhibitor is used in this research. The inhibitor opted for this study is cheap, economic and renewable since it is organic. In this project the steel was coated with PPE extract and tested in different environment conditions and the efficiency of corrosion control was obtained with impressed voltage current. The result was compared with conventional uncoated rebar. The result proved that PPE is a good natural inhibitor for the steel, and the efficiency of the inhibitor is good enough to resist the corrosion in the rebar.