Abstract
A modified non-linear hinge model (NLHM) was proposed to predict the crack propagation of cementitious composites. Based on the toughness criterion and the weight function method, the fracture processes of normal concrete and aligned steel fiber reinforced concrete (ASFRC) were analytically determined. For normal concrete, the P–CMOD curves of the three-point bending beams with different sizes and initial notch ratios were calculated. Compared with traditional NLHM, the results obtained by the proposed model agreed well with those obtained by existing experiments and finite element method. According to the principles of electromagnetics, the ASFRC specimens were prepared. The three-point bending tests of the ASFRC beams with different sizes were conducted. The applicability of the proposed model for fiber reinforced cementitious composites was verified.
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