The fracture behaviour of fibre reinforced concrete

摘要: Abstract The work of fracture, γF, and the critical stress intensity factor Kc, have been determined for failure in bending notched samples sand/cement mortar reinforced with short, randomly-distributed fibres glass, high carbon steel, mild steel. Results were obtained on wet dry stored material after 7 weeks again 6 months curing. There is clear evidence that highest fracture resistance long term by reinforcement However, whereas plain concrete can be increased two orders magnitude adding as little 2 vol. % steel wires, more parameter Kc at most a 2. Glass fibre raises γF only 40. experimental values wire are compared theoretical estimates based considerations pull-out deformation.