Effect of particle size distribution on properties of cement

Cement is the most widely used building material, and particle size distribution is an important factor affecting the performance of cement. This paper studies the physical properties, mechanical properties and drying shrinkage of cement under different grinding time. The results show that with the increase of grinding time, the particle size distribution of cement tends to move towards small particle size, and the specific surface area and water consumption of standard consistency increase, and the setting time is shortened. When the cement particles were ground to 40 min, the increase of grinding time had little contribution to the 3d and 28d strength of mortar, and the 90d strength also decreased. At the same time, the drying shrinkage of mortar increases with the increase of fine particle content. The research results of this paper can provide a theoretical basis for the engineering application of cement.