为降低砂浆的体积收缩,提高其抗裂性能,以30%、50%超细钢渣矿粉取代部分水泥,同时掺入纤维,用于制备水泥砂浆,研究了砂浆的物理力学性能、体积收缩性能,并用平板法研究了砂浆的抗裂性能。结果表明,与空白试样对比,超细钢渣矿粉和纤维的合理掺入可降低砂浆的体积收缩(56 d时可降低20%—30%),提高砂浆的的抗裂性能。 In order to reduce the volume shrinkage of mortar and improve its anti-cracking performance, 30% and 50% ultra-fine steel slag slag powder was substituted for part of cement, while fiber was used for preparing cement mortar. The physical and mechanical properties and volumetric shrinkage properties The mortar crack resistance was studied by the flat method. The results show that compared with the blank samples, the reasonable incorporation of ultrafine slag powder and fiber can reduce the volume shrinkage of mortar (20% -30% at 56 days) and improve the crack resistance of mortar.