3D meso-scale modelling of tensile and compressive fracture behaviour of steel fibre reinforced concrete

This paper presents a novel meso-scale modelling framework to investigate the fracture process in steel fibre reinforced concrete (SFRC) under uniaxial tension and compression considering its 3D mesostructural characteristics, including different types of fibres, realistic shaped aggregates, mortar, interfacial transition zone voids. Based on hybrid damage model consisting cohesive element method plasticity method, cost-effective finite approach was proposed simulate behaviour SFRC terms stress–strain response, energy dissipation crack morphology. The results indicated that given conditions, straight hooked-end fibres improved compressive tolerances over 11.5% while spiral had negligible effect 2.6%. tensile macro-damage level index introduced reduced 15% by all fibres. Compared higher anchoring capacity reinforcement performance did not exhibit significant influence.