Abstract
The set-up of desulphurization units in domestic coal-fired power plants has brought increasing output of FGD gypsum, which results in a wide application of FGD gypsum products. During the application of such products, people found that they are prone to alkalization, i.e., a phenomenon significantly affecting the appearance and performance of the products. In this study, fly ash, another kind of waste from coal-fired power plants, was introduced to inhibit the alkalization of FGD gypsum products under the action of the alkali-activator for better utilization of waste resources.
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