摘   要：通过对单掺和三种不同混杂比例混掺的方式，以体积掺加率0.3%、0.6%、0.9%、1.2%将玄武岩、聚丙烯纤维掺入普通C30混凝土中形成混杂纤维混凝土，对其进行7d、14d、28d龄期的抗硫酸盐腐蚀性能试验研究。结果表明，对基体混凝土在龄期为7d的抗压强度耐蚀系数提高最为显著的是单掺纤维系列与1:1、1:2混杂纤维系列纤维混凝土。各系列纤维对基体混凝土14d耐蚀系数提高的最佳纤维掺加率在0.3%附近；单掺聚丙烯纤维系列、单掺玄武岩纤维系列对基体28d耐蚀系数提高的最佳纤维掺加率分别在0.3%、0.9%附近。总体上混杂纤维系列纤维混凝土的抗硫酸静泡腐蚀能力优于单掺纤维系列纤维混凝土。

Abstract: Using different manners of the single ratio and three different hybrid ratios and adding the basalt and polypropylene fibers in the ordinary C30 concrete with the volume mixing ratios of 0.3%, 0.6%, 0.9% and 1.2%, hybrid fiber reinforced concrete is produced, and the sulphate resisting corrosion properties of 7d,14d,28d concrete specimens are tested for. The results show that the 7d compressive strength corrosion resistance coefficient of the matrix concrete is most significantly improved by single doped fiber and 1:1,1:2 hybrid fiber of fiber reinforced concrete. The optimal mixing amount of the fibers is about 0.3%, which can improve the 14d compressive strength corrosion resistance coefficient most significantly. And the optimal mixing amount of single doped polypropylene fiber and single-doped basalt fiber are 0.3% and 0.9% for 28d corrosion resistance coefficient. Overall sulphate static bubble corrosion resistance capacity of hybrid fiber reinforced concrete is better than that of single-doped fiber reinforced concrete.