Experimental Study on Concrete Using Calcium Nitrite and Sodium Nitrite as Corrosion Inhibitor
Momin Afrin I.,  Patil Kuldeep S.
Reinforced concrete has been widely used in the last century; however, due to carbonic gas and chloride ions, it suffers premature deterioration. The concrete protects steel from corrosion, and the alkalinity of concrete leads to the formation of a passive layer around the reinforcement, which increases protection against corrosive processes. However, concrete is a porous material and has cracks that allow the entrance of aggressive agents, destabilizing the passive layer and corroding steel. The corrosion is the major cause of deterioration of concrete structures and several methods of protection and repair have been developed to increase the durability of such structures. Corrosion inhibitors, chemical substances that reduce the corrosion rate, have been widely used, both for prevention and correction. Inhibitors are classified according to their method of application, their mechanism of protection and chemical composition. Due the advantages that they offer, corrosion inhibitors have been receiving more attention in recent years. The use of inhibitors is a promising method to increase the durability of concrete structures exposed to chloride ions and carbonation.
In this research work, calcium nitrite and sodium nitrite are used as a corrosion inhibitors. Different percentages of inhibitors are added in the concrete for experimental work. Rebound hammer test, UPV test, half cell potentiometer test are performed on concrete cubes.
Keywords- Inhibitor, concrete, calcium nitrite, sodium nitrite
Cite this Article
Momin Afrin I.,  Patil Kuldeep S.,   "Experimental Study on Concrete Using Calcium Nitrite and Sodium Nitrite as Corrosion Inhibitor"
, International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.7, Issue 3, pp.273-276, July 2019, Available at :http://www.ijedr.org/papers/IJEDR1903046.pdf