Meso-level Analysis of Hybrid Effect of Steel-Polypropylene Fiber Concrete Mechanical Properties

  • LI Lin, Zhang Jichao


Two kinds of fiber, which are steel fiber with high elasticity modulus and polypropylene fiber with low elasticitymodulus, have been added into the concrete in order to improve its mechanics of high compressive strength but poor toughness. In order to study the impact of flexural strength of hybrid fiber concrete , established a meso-level numerical model of Steel-Polypropylene Fiber Concrete when the two kinds of fiber content changes in this paper.The results indicate that the two kinds of fiber are added together the improvement of concrete brittleness is more effective.

Keywords- steel fiber; polypropylene fiber; hybrid fiber; concrete; toughness.