The Key Application Technology of Desulfurized Gypsum in Dry-Mixed Mortar

In this paper, in view of the problem low early and late strength dry-mixed mortar prepared by cement-fly ash-slag powder composite cementing system, ratio mixing fly ash slag to replace cement is 70%. To study effect desulfurization gypsum (FGD) on improving activity system. The results show that adding desulfurized gypsum, which accounts for 6% 8% total mass cementitious material, has no adverse workability can significantly improve compressive resistance slurry. Strength tensile bonding strength, shrinkage rate reduced more than 10%, ability resist carbonization improved make volume stable.