Inhibiting Capacity of Neem Leaf Powder Concrete on Steel Reinforcement Corrosion

IJEP 43(10): 899-904 : Vol. 43 Issue. 10 (October 2023)

Govindasami S.1* and Devanandhu A.2

1. Vel Tech High Tech Dr Rangarajan Dr Sakunthala Engineering College, Department of Civil Engineering, Chennai – 600 062, Tamil Nadu, India
2. Vel Tech High Tech Dr Rangarajan Dr Sakunthala Engineering College, Department of Structural Engineering, Chennai – 600 062, Tamil Nadu, India


Corrosion of steel bars leads to the early failure of reinforced concrete structures and hence the durability and service life of structure is reduced. So, it is essential to find suitable materials to reduce and prevent corrosion in reinforced concrete structures. Based on the literature, this study focused on analyzing the corrosion inhibiting capacity of neem leaf powder (Azadirachta indica) on the steel reinforcement and strength performance of the neem powder concrete. To determine the corrosion behaviour of neem leaf powder, four steel rod samples were weighed and dipped in four different solutions. It was found that the rod sample which was dipped into neem leaf powder solution showed least weight loss (8%). To check the stability of the structural elements, cube, cylindrical and beam specimens were cast and tested with various proportions of neem leaf powder. The results of tests reveal that the neem leaf powder concrete has higher strength at its optimum dosages of 0.4%, 0.2% and 0.3% for compressive strength, split tensile strength and flexural strength, respectively. Therefore, neem leaf powder can be used as a corrosion inhibitor in reinforced concrete beam elements as sustainable construction material to increase the service life of structures.


Compressive strength, Corrosion inhibitor, Corrosion of steel, Inhibiting capacity, Neem leaf powder, Rate of corrosion


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