摘   要：研究了聚酯纤维和碳纤维硫铝酸盐水泥混凝土的力学性能。结果表明，在90d龄期时，聚酯纤维和碳纤维硫铝酸盐水泥混凝土的抗压强度分别达到了58.9MPa、52.4MPa，比同龄期素混凝土试样分别提高了25.6％ 和12.0％；而劈拉强度分别达到了5.77MPa和5.11MPa，比同龄期素混凝土试样分别提高了41.1％ 和24.9％。碳纤维和聚酯纤维对硫铝酸盐水泥混凝土均有明显的约束裂缝扩展的能力，表现为在28d龄期时，碳纤维混凝土的断裂能达到113.4kJ，比基准混凝土提高了28.1％，而聚酯纤维混凝土的断裂能则达到了139.8kJ，比基准混凝土提高了58.0％。

Abstract: The mechanical properties of polyester fiber and carbon fiber reinforced sulphoaluminate cement (SAC) concrete are researched. The results indicate that the compressive strengths of polyester fiber and carbon fiber reinforced SAC concrete are as high as 58.9MPa and 52.4MPa respectively at 90 days age, which are increased by 25.6% and 12.0% respectively, compared with plain SAC concrete at the same age. The splitting tensile strengths of polyester fiber and carbon fiber reinforced SAC concrete are as high as 5.77MPa and 5.11MPa respectively at 90 days age, which are increased by 41.1% and 24.9% respectively, compared with plain SAC concrete at the same age. The function of carbon fiber and polyester fiber to limit the development of cracks propagation for SAC concrete is obvious, and the fracture energy of carbon fiber reinforced SAC concrete is as high as 113.4kJ at 80 days age, which is increased by 28.1% compared with plain SAC concrete. The fracture energy of polyester fiber reinforced SAC concrete is as high as 139.8kJ at the same age, which is increased by 58.0% compared with plain SAC concrete.