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The corrosion of steel reinforcement significantly compromises the durability of concrete structures. This study highlights the innovative use of benzotriazole (BTA) as an anticorrosive additive in epoxy coatings to enhance corrosion protection for steel rebars. Combining BTA with epoxy offers a synergistic effect, significantly enhancing the barrier and inhibitory properties against corrosion. Corrosion performance was evaluated for uncoated, blank epoxy-coated, and BTA-modified epoxy-coated samples (5, 10, and 15 wt%) under aggressive environments, including 3.5% NaCl and 1 M H2SO4 solutions. Electrochemical techniques such as OCP, LPR, and Tafel polarization, along with weight-loss and half-cell potential methods, were employed. Results demonstrated that epoxy coatings with 15 wt% BTA provided superior corrosion resistance, offering a sustainable approach to improve the longevity of reinforced concrete structures.

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Enhancement of Corrosion Resistance in Steel Reinforcement Using Benzotriazole-Infused Epoxy Coatings for Concrete Protection

  • 会议论文

  • 发表日期：

    2026年

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  • M. Ananthkumar,
  • Malyala Roopika,
  • K. M. Mini,
  • Bharath Chandrasekar

摘要

The corrosion of steel reinforcement significantly compromises the durability of concrete structures. This study highlights the innovative use of benzotriazole (BTA) as an anticorrosive additive in epoxy coatings to enhance corrosion protection for steel rebars. Combining BTA with epoxy offers a synergistic effect, significantly enhancing the barrier and inhibitory properties against corrosion. Corrosion performance was evaluated for uncoated, blank epoxy-coated, and BTA-modified epoxy-coated samples (5, 10, and 15 wt%) under aggressive environments, including 3.5% NaCl and 1 M H2SO4 solutions. Electrochemical techniques such as OCP, LPR, and Tafel polarization, along with weight-loss and half-cell potential methods, were employed. Results demonstrated that epoxy coatings with 15 wt% BTA provided superior corrosion resistance, offering a sustainable approach to improve the longevity of reinforced concrete structures.