Abstract
A theoretical method for determining the equivalent fracture toughness and tensile strength of steel fibre reinforced cementitious composite (SFRC) was established based on boundary effect model (BEM). The characteristic parameter Cf and discrete number γ were introduced to the analytical expression of BEM, which considered the influence of orientation, length and diameter of steel fibre on SFRC. The fictitious crack propagation corresponding to the peak load was evaluated by parameter combination γ⋅Cf. SFRC specimens with different depths were analyzed to verify the applicability and feasibility of the proposed method. The full failure curves for SFRC were further established.
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