Finite Element Simulation Analysis on Crack Resistance of Recycled Concrete Beams of Hybrid Fiber with Waste Polypropylene Fiber

Abstract

In order to improve the recycling efficiency of construction waste and reduce the environmental pollution, the recycled coarse aggregate was processed into recycled coarse aggregate instead of some natural coarse aggregate, and recycled concrete was prepared in this paper. The influence of the total blending ratio of recycled concrete on the crack resistance of recycled concrete beams was simulated by finite element method, and the ratio of recycled polypropylene fiber and common polyacrylonitrile fiber was changed according to a certain proportion of recycled concrete fiber. The results show that the crack resistance of recycled concrete beams can be improved effectively by adding waste hybrid fibers, which can be used as fiber reinforced materials to improve the properties of recycled concrete beams.