In this paper, the effects of the phosphogypsum (PG) content at 0%–50% and the calcination at 750°C, 800°C, and 850°C on the properties of cement mortar were studied. It is observed that the optimal mechanical properties of cement mortar are achieved when the PG content is 30% and calcined at a temperature of 800°C. Building upon these findings, further investigations were conducted to explore the effect of 0%–5% quicklime aging treatment combined with calcination on the properties of cement mortar. The results show that the samples prepa...
