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Optimized Corrosion Resistance in Reinforced Concrete Using Eco-Friendly Coatings Derived from Hibiscus Rosa-Sinensis and Azadirachta Indica

  • 2026
  • OriginalPaper
  • Chapter
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Abstract

This chapter delves into the critical issue of corrosion in steel and reinforced concrete structures, which significantly reduces their lifespan. The study explores the use of eco-friendly coatings derived from Hibiscus rosa-sinensis and Azadirachta indica leaf extracts to enhance corrosion resistance. The research compares the performance of these coatings in terms of mechanical behavior and corrosion resistance, using various tests such as electrochemical impedance spectroscopy, salt spray tests, and scanning electron microscopy. The findings reveal that the A-coated specimens, derived from Azadirachta indica, outperformed the H-coated ones from Hibiscus rosa-sinensis due to better configuration and higher phosphorus content. This resulted in a more effective passive layer around the rebar, significantly improving the durability of the reinforced concrete. The study concludes that these natural, non-toxic coatings offer a sustainable and effective solution for protecting reinforcing steel against corrosion, eliminating concerns about hazardous gas formation during the electrochemical process.

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Title
Optimized Corrosion Resistance in Reinforced Concrete Using Eco-Friendly Coatings Derived from Hibiscus Rosa-Sinensis and Azadirachta Indica
Authors
M. Ananthkumar
K. M. Mini
Aswathi Viswam
Ganapathy Kumaresh
Copyright Year
2026
Publisher
Springer Nature Singapore
DOI
https://doi.org/10.1007/978-981-95-0229-5_2
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