研究了细集料种类、粒径大小及分布对低孔隙率砂浆强度性能的影响。结果表明，集料本征强度和粒径大小对强度性能有显著影响、在压蒸条件下，配合出适当的石英砂浆的抗压强度具有与净浆同样的强度，其原因在于界面化学反应。界面改善使砂浆抗压强度显著提高，但对抗折强度的影响较小。 The effects of fine aggregate type, particle size and distribution on the strength properties of low porosity mortars were studied. The results show that the intrinsic strength and particle size of the aggregates have a significant effect on the strength properties. Under compressive-steaming conditions, the compressive strength of a suitable quartz mortar has the same strength as that of the paste, which is due to the interfacial chemical reaction. The improvement of the interface makes the compressive strength of the mortar significantly improved, but the impact on the fracture strength is smaller.