· Another benefit of using FGD gypsum is that it can replace high quality natural gypsum as raw material for wall manufacturing. Mariella Cortez Caillahua et al. investigated the technical feasibility of FGD gypsum used as a retarder in Portland cement. The results showed that the setting time of the cement with FGD gypsum exhibited a onehour delay in comparison to the case of natural gypsum ...
![](/themes/3fr7/images/logo/logo.png)