文章探究冻融循环损伤下秸秆纤维混凝土抗冻性能，选取复合硅酸盐水泥、硅灰、减水剂、油菜秸秆等原材料，制备秸秆纤维，秸秆纤维掺量分别取2.5%、5.0%和7.5%，制备秸秆纤维混凝土试件，在不同冻融循环次数下测试试件的抗压强度、质量损失率和动弹性模量。结果表明：冻融循环次数会影响试件的抗压强度、质量损失率和动弹性模量。在相同的秸秆纤维掺量下，随着冻融循环次数的增加，秸秆纤维混凝土的抗压强度和动弹性模量均明显降低，且秸秆纤维掺量越小试件质量损失率越高。

This paper explores the frost resistance of straw fiber reinforced concrete under freeze-thaw cycle damage, and selects composite Portland cement, silica fume, water reducer, rape straw and other raw materials to prepare straw fiber, and the straw fiber content is 2.5%, 5.0% and 7.5%, respectively, to prepare straw fiber reinforced concrete specimens, and the compressive strength, mass loss rate and dynamic elastic modulus of the specimens are tested under different freeze-thaw cycles. The results show that the number of freeze-thaw cycles affects the compressive strength, mass loss rate and dynamic elastic modulus of the specimen. With the increase of freeze-thaw cycles, the compressive strength and dynamic elastic modulus of straw fiber reinforced concrete decrease significantly with the increase of the number of freeze-thaw cycles, and the smaller the straw fiber content, the higher the mass loss rate of the specimen.