钢纤维水泥砂浆的抗裂性、粘结性及其混凝土在冲击荷载下的抗裂试验研究表明，钢纤维对防止砂浆（混凝土）干燥开裂有明显效果．当钢纤维掺量为３０ｋｇ／ｍ３时，剪切钢纤维砂浆的收缩裂缝总量是参比试件的５０％～６５％，而铣削钢纤维砂浆则为４０％～５０％；钢纤维混凝土在冲击荷载下的抗裂性能是普通混凝土的３～４倍．此外，钢纤维在混凝土中的抗裂作用还与纤维的几何形状和表面清洁程度及粗糙度有关． The crack resistance, cohesiveness of steel fiber cement mortar and its crack resistance test under impact load show that steel fiber has obvious effect on preventing dry cracking of mortar (concrete). When the steel fiber content is 30kg/m3, the total amount of shrinkage cracks in the shear steel fiber mortar is 50% to 65% of the reference sample, while the milling steel fiber mortar is 40% to 50%; steel fiber concrete in the impact Crack resistance under load is 3 to 4 times that of ordinary concrete. In addition, the anti-cracking effect of steel fiber in concrete is also related to the fiber geometry and surface cleanliness and roughness.