Abstract
Abstract In this paper, the bond strength of epoxy coated steel enhanced by the addition of fly ash added is examined. The experimental data shows that when the weight ratio of fly-ash/epoxy is 0.5 the largest improvement in bond strength is achieved. Other combinations using different weight ratios will result in bond improvement compared to a plain epoxy coating, but only specimens with a 0.5 fly-ash/epoxy weight ratio develop a bond strength at the level of that of uncoated rebar. Furthermore, it was found that the shear stiffness per length and the critical debonding shear force per length follow the same trend as bond strength.
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