Direct shear tests reveal bond properties between steel fiber reinforced self-compacting concrete and conventional concrete, indicating enhanced shear capacity.
Steel fiber reinforced self-compacting concrete exhibits favorable characteristics of ductility and fluidity, making it a popular choice for structural reinforcement and cast-in-place connection of concrete structures. To assess the bond properties between steel fiber reinforced self-compacting concrete and conventional concrete, direct shear tests were conducted on 7 sets of Z-shaped specimens, with varying parameters such as the reinforcement rate, groove depth. All specimens exhibited failure at the bonding surface, with unreinforced specimens displaying predominantly brittle failure, while reinforced specimens demonstrated certain ductility. The presence of steel fibers contributes to shear resistance, particularly in grooved bonding surfaces. As the reinforcement rate, groove depth increase, the shear capacity of the bonded surface also increases.
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Gao et al. (2025) studied this question.
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