Effect of particle size distribution width of cement particle group on performance

Abstract

The effect of the particle distribution width of cement on the amount of cement paste and the bleeding performance was studied. The early hydration and heat release laws of cement were explored with a hydration heat analyzer, and the physical properties of cement were studied. The results show that the dosages of polycarboxylate superplasticizer increases with the increasing of the width of the cement particle distribution, the bleeding rate of the cement paste decreases with the increasing of the width of the cement particle distribution. From the results of hydration heat, it can be seen that under the same conditions, with the increase of cement particle distribution width, the hydration reaction rate slows down and the degree of hydration is relatively low. From the results of physical properties, it can be seen that the water demand of normal consistency decreases with the increasing of distribution width, and cement particle distribution width has little effect on cement setting time.