Abstract
To clarify the utilization of flue gas desulphurization (FGD) gypsum as the retarder of cementbased materials,the effect of the properties of the slag cement with different tempemtuIe treatment of FGD gypsum was studied. The results reveal that in the case of adding the same amount, the setting time of cement shortened with the increasing of heat treatment temperature of FGD gypsum. The influence of different heat treatment processes on the strength of cements was not obvious and the strength development was good. The water consumption of normal consistency for cements changed slightly. Stability was qualified.
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