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通过矿渣微粉纤维混凝土高温后立方体抗压和轴心抗压试验,分析温度、矿渣微粉掺量、钢纤维体积率、聚丙烯纤维掺量和混凝土强度等级等因素对混凝土高温后抗压强度的影响。结果表明,随着温度升高,高温后矿渣微粉纤维混凝土立方体抗压强度和轴心抗压强度不断降低,且逐渐趋于一致;矿渣微粉纤维混凝土高温后抗压强度随矿渣微粉、钢纤维和聚丙烯纤维掺量的增加而增大,但增大幅度不同。
The effects of temperature, slag powder content, steel fiber volume fraction, polypropylene fiber content and concrete strength grade on the compressive strength of concrete after high temperature were studied by compressive strength and axial compression test of slag fine fiber reinforced concrete after high temperature. . The results show that with the increase of temperature, the compressive strength and axial compressive strength of slag cubic zirconia powder concrete cube decrease with the increase of temperature, and tend to be consistent. The compressive strength of slag fine fiber reinforced concrete with high temperature slag slag, steel fiber and Polypropylene fiber content increased and increased, but the increase is different.