盐冻破坏是我国北方地区混凝土过早破坏或耐久性失效的重要原因。设计了纤维混凝土在盐冻环境下的耐久性试验,研究不同掺量聚丙烯纤维对混凝土抗盐冻性的影响。通过试验得出聚丙烯纤维混凝土在盐冻作用下的动弹模量、质量损失、抗折强度以及劈裂抗拉强度的变化规律,分析了聚丙烯纤维掺量对混凝土抗冻性的影响。 Salt frost damage is an important reason for the premature failure or failure of concrete in northern China. The durability test of fiber reinforced concrete in salt frost environment was designed to study the effect of different content of polypropylene fiber on the frost resistance of concrete. Through the experiment, the change rules of dynamic modulus, mass loss, flexural strength and splitting tensile strength of polypropylene fiber reinforced concrete under salt frost were obtained. The effect of polypropylene fiber content on the frost resistance of concrete was analyzed.