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Author(s): Iwekumo Stevyn Akosubo, Charles Kennedy.

Volume/Issue: Volume 6 , Issue 1 (2023)

Abstract:

This study aimed to investigate the effects of corrosion on the bond strength between reinforcing steel and concrete and the potential of using exudate coating to improve the bond strength in corrosive environments. The finding showed that the failure load and bond strength of corroded concrete cube specimens were significantly lower than non-corroded control cube specimens. The use of exudate coating on steel reinforcements, however, can significantly improve the pullout bond strength in corrosive environments. The study also showed a slight reduction in the measured rebar diameter for corroded specimens compared to non-corroded specimens. The Albizia lebbeck exudate-coated steel bars showed higher bond strength and maximum slip values compared to non-corroded control specimens, indicating that the exudate coating may have provided protection against corrosion. Further research into the long-term effects of using Albizia lebbeck exudate-coated steel bars and the cost-effectiveness of this method is required.

Keywords:

Mild Steel; Corrosion Inhibitors; Albizia Lebbeck Exudates; Bond Strength

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