Abstract
The presented work has been focused on strain-softening FRC and the interrelationship
between material properties and structural behaviour. The main purpose of this work was to
establish a procedure for structural analysis of flexural members with a combination of steel
fibres and conventional reinforcement. A systematic approach for material testing and
structural analysis, based on fracture mechanics, has been used and this covers: (1) material
testing; (2) inverse analysis; (3) adjustment of the s-w relationship for fibre efficiency; and
(4) cross-sectional and structural analysis. The results suggest that the approach used for the
material testing provides the necessary properties to perform analyses based on non-linear
fracture mechanics. The structural behaviour could be predicted with good agreement with
FEM using both bi-linear and multi-linear s-w relationships. When comparing the peak loads
obtained in the experiments with the results from the analyses, the agreement was good, with
a high correlation. This demonstrates the strength of the fracture-mechanics approach for
material testing and structural analysis
