This analysis shows bonds of Fe-SMA fibers and epoxy resin vary with adhesive types, highlighting Lica-102's superior performance.
The application of FRP/SMA composites in civil engineering reinforcement is well-established, with the effective bonding performance between Fe-SMA fibers and epoxy resin serving as the foundation for their use in engineering. This study investigates the pull-out tests of Fe-SMA fibers embedded in epoxy resin to explore the bonding characteristics at the Fe-SMA and epoxy resin interfaces under various adhesive types. The effects of adhesive type on failure modes, ultimate load, and the interface load-displacement relationship are analyzed. The results indicate that both the cap gel impregnated adhesive and the Lica-102 structural adhesive exhibit debonding failure at the Fe-SMA fibers and epoxy resin interface. Notably, the bonding performance of the Lica-102 structural adhesive is superior, demonstrating a bonding strength approximately 1.2 times greater than that of the cap gel impregnated adhesive. This study provides a crucial design basis for the design and practical application of FRP/Fe-SMA composites.
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Du et al. (2025) studied this question.
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