Fracture Mechanics of Steel Fiber Reinforced Concrete

The strengthening of concrete with fibers is an effective way to increase the resistance and ductility of concrete against crack development. In fiber concretes, fracture mechanics are used as a principle in the analysis of tensile strength, fracture energy and toughness. Fracture energy is the energy that will be required to bring the element to the collapse. The value of toughness is equal to the area under the usual strain-strain curve. It is of great benefit to obtain the fracture mechanics parameters (toughness, fracture energy) by working with the principles of dimension effect, especially on special concretes and thus on fibrous concretes for many reasons