Abstract： Desulfurized gypsum, phosphogypsum and modified phosphogypsum neutralized by lime were introduced as retarders to prepare Portland cement. The setting time, combined water volume and mechanical properties of cement were measured, and the phase distribution and microstructure of cement hydration products were analyzed by XRD and SEM. The effect of phosphogypsum on early cement hydration was explored from the physical properties and microscopic mechanism.
2024, Vol. 0 
