Abstract
Tests are reported on the influence of fibre reinforcement on the punching shear strength of reinforced concrete slab-column connections. It is shown that fibres not only delay and control the development of tension cracks but that they also substantially reduce all the deformations at all stages of loading. The service load that can be sustained for a given serviceability criterion is thereby increased by 25 to 50 per cent. Both the first crack load and the ultimate punching shear strength are enhanced, and catastrophic failures are changed into gradual failures. The fibres enhance post-yield ductility by about 200 per cent and the energy absorption characteristic by about 400 per cent.
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