本文将三种不同的可溶性膨胀源A、M、F进行对比试验,从而选择出合适的膨胀源,并配制膨胀剂溶液,研究其掺量对胶砂试样限制膨胀率、抗压强度的影响,从而确定液体膨胀剂的适宜掺量;最后研究了减缩剂对液体膨胀剂性能的影响。 In this paper, three different kinds of soluble swelling sources, A, M and F, were compared to select a suitable expansion source and to prepare a swelling agent solution to study the effect of its content on the limiting expansion rate and compressive strength of mortar samples , So as to determine the appropriate dosage of liquid expanders. Finally, the effects of defoamers on the performance of liquid expanders were studied.