中文摘要：

研究了两种预处理方式的磷石膏作缓凝剂时对水泥物理性能的影响，并与以天然石膏作缓凝剂的水泥性能进行比较。结果表明：煅烧磷石膏作缓凝剂时，水泥凝结时间及3d和28d强度接近或好于掺天然二水石膏的水泥，可对其进行资源化利用。

英文摘要：

Effect of two pre - processing methods of phosphoghpsum on the performance of cement was studied. The comparative experiment on the performance of cement with modified phosphogypsum and with natural gypsum as retarder. The results indicated that the setring time and the strengths of cement with the addition of the calcined phosphoghpsum at 3 d and 28 d is equivalent to or better than cement with the addition of natural gypsum, the calcined phosphoghpsum as resource is feasible.