Characterising the shear behaviour of steel fibre-reinforced concrete

The Mode I and Mode II fracture of steel fibre-reinforced self-consolidating concrete is investigated experimentally at two scales of observation, namely at the scale of a single fibre (Micro-scale) and at the scale of a single localised crack (Meso-scale). The Meso-scale data is used to calibrate and validate a material model implemented in a numerical procedure via a user material (UMAT) in the commercial finite element package Abaqus. An empirical model reconciles the fibre component characterised via a single fibre transverse pull-out test with the composite Iosipescu shear test.