混掺纤维对混凝土力学性能的影响探究

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中图分类号：TQ342+.62；TU528 文献标志码：A

文章编号：1001-5922（2025）06-0060-04

Investigation on the influence of mixed fiber on the mechanical properties of concrete

SHAO Huiguang1，ZHANG Qizhi2

（1. Biyang County Housing Municipal Engineering Quality and Technology Center，Biyang ，Henan China； 2. Huanghuai University，Zhumadian ，Henan China）

Abstract：In this paper，polypropylene fiber and basalt fiber are used as admixtures，which are mixed into concrete to improve the mechanical properties of concrete. Specifically， 2% polypropylene fiber， 2% basalt fiber and 1% polypropylene fiber +1% basalt fiber were added to the reference concrete，and the effects of fiber and concrete com⁃ pressive strength under natural environment，corrosive environment，high temperature environment and corro⁃ sion-high temperature coupling environment were analyzed. The results show that the incorporation of fiber can sig⁃ nificantly improve the compressive strength of concrete，and even improve the strength grade of concrete. The corro⁃ sion effect has a certain influence on the compressive strength of concrete. Compared with the two kinds of fibers， the effect of basalt fiber on the improvement of concrete performance is better than that of polypropylene fiber con⁃ crete. The effect of high temperature on the performance of concrete is very obvious，and the incorporation of fiber can maintain the strength grade of the benchmark concrete. Under the coupling environment of corrosion and high temperature，the strength grade of benchmark concrete and single fiber concrete decreases rapidly，while the mixed fiber can maintain the strength grade of benchmark concrete. Therefore，it is recommended to mix 1% polypropyl⁃ ene fiber and 1% basalt fiber in concrete in a complex environment.

Key words：mixed fibers；mix ratio；compressive strength；polypropylene fiber；basalt fiber

混凝土作为建筑、桥梁、隧道等结构中广泛应用的建筑材料，其性能直接影响结构的安全使用性[1-3]。（剩余5739字）