An analytical model for determining the interfacial bond shear modulus
of steel-fibre-reinforced concrete is presented. The band shear modul
us is a constant that linearly relates the bond shear stress to the fi
bre slippage at the interface. The analytical model is developed based
on the axisymmetric modelling of the pulled-out steel fibre from the
surrounding concrete. The model assumes elastic behaviour for both the
concrete and the steel fibres. The analytical model evaluates the tot
al displacement of the fibre when pull-out loads are applied at the fi
bre end. Experimental analyses are used in conjunction with the analyt
ical model to determine the bond shear modulus. The results of the num
erical analysis of a few selected experiments are presented. The propo
sed model is used to evaluate a constant value for the bond shear modu
lus.