In this paper, the mechanical and mechanical properties of two plant non-metallic fibers and one metallic fiber in concrete were analyzed. Design tests were conducted using two variable indicators of normal stress (σu/ MPa) and gradient fiber admixture (r/%). The flexural and compressive properties of reed fiber concrete, coconut fiber concrete, steel fiber concrete and plain concrete specimens were compared by the tests. It was concluded that both non-metallic fibers and metallic fibers can effectively improve the mechanical properties of structural concrete. According to the analysis of the experimental parameter diagram, the optimal dosing ratio of reed fiber and coconut shell fiber is 2%, and the optimal dosing ratio of steel fiber is 1.5%. In contrast, the impact toughness of metal fibers prompted the compressive performance of metal fibers is much stronger than non-metallic fibers, while the bending of non-metallic plant fibers can well improve the flexural strength of concrete prompted the flexural performance of non-metallic fibers is much higher than that of metal fibers. Therefore, the relationship between the mechanical stress of fiber concrete is: steel fiber concrete > reed fiber concrete > coconut fiber concrete.
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