Published Paper Details:

Reinforced concrete structures, widely used in construction due to their strength and durability, are highly vulnerable to corrosion, especially in aggressive environments. This study explores the use of organic and inorganic inhibitors for cathodic protection in reinforced concrete structures, aiming to mitigate corrosion, a leading cause of deterioration in such infrastructure. This study aims to understand the influence of organic and non-organic corrosion inhibitors on the strength and corrosion resistance properties of concrete by admixing locally available materials with M30 grade concrete mixes. These materials include sodium nitrite, sodium silicate, di-ethanolamine, and hexamine. Admixed inhibitor dosages range from 1% to 5% by cement weight. Sodium nitrite (3%), calcium nitrite (4%), hexamine (2%), and di-ethanolamine (3%), as corrosion inhibitor admixtures, were determined to be the most effective for M30 grade concrete. At 56 days, the compressive, split-tensile, and flexural strengths are higher when calcium nitrite is added to other corrosion inhibitors. The research found that all of the corrosion inhibitors tested improved concrete durability, flexural strength, compressive strength, and split tensile strength. The inhibitors' anodic mechanism reduced the early strength growth. The results of the electrical resistivity and half-cell potential measurements taken from all of the corrosion inhibitors added to M30 grade concrete mixes demonstrate that di-ethanolamine and sodium nitrate have the best corrosion prevention capabilities, followed by hexamine and sodium nitrite.