片麻岩作为水泥辅助性胶凝材料的试验研究

分析了片麻岩的活性激发,研究了片麻岩作为辅助性胶凝材料对水泥凝结时间、抗压强度、干缩性能的影响。结果显示,片麻岩延长了水泥的凝结时间,降低了早期强度,促进了后期强度。在片麻岩掺量为20%时,可以配制出凝结时间符合要求、28d抗压强度超过32.5MPa、干缩小的水泥。

Activity stimulation of gneiss is analyzed in this paper, and the effects of gneiss as a supplementary cementing material on the setting time, compressive strength and dry shrinkage of hardened paste are Studied. The results show that gneiss can prolong the setting time and decrease the early strength of the cement, but it promotes the late strength. When the gneiss content is 20%, the cement＇s setting time can meet the requirements, 28 days compressive strength is more than 32.5MPa and the dry shrinkage is small.