不同掺量硼酸对磷酸镁水泥性能的影响
Effect of Different Amounts of Boric Acid on the Properties of Magnesium Phosphate Cement
刘睿楠 1王立艳1
作者信息
- 1. 吉林建筑大学建筑节能技术工程实验室,吉林 长春 130000
- 折叠
摘要
通过实验对不同硼酸掺量下的磷酸镁水泥性能及水化产物晶体形态进行测试分析,探讨硼酸掺加量对磷酸镁水泥的影响.实验结果表明,加入硼酸后,磷酸镁水泥流动度提升不明显;凝结时间提升明显,但凝结时间不会随硼酸掺量的增加而持续增加,硼酸掺量4%为最佳掺量;早期抗折强度与抗压强度下降显著,后期强度变化较小.掺加硼酸会抑制水泥中钾鸟粪石结晶成型;随着硼酸掺量的增加,钾鸟粪石含量减少且由不均匀棱柱型向尖锐锥型转化.
Abstract
The properties of magnesium phosphate cement and the crystal morphology of hydration products under different boric acid dosages were tested and analyzed experimentally,and the effect of boric acid dosage on magnesium phosphate cement was discussed.The experimental results showed that the fluidity of magnesium phosphate cement was not significantly improved after boric acid was added.The coagulation time increased significantly,but the coagulation time did not continuously increase with the increase of boric acid content,and the boric acid content of 4% was the optimal dosage.The flexural strength and compressive strength decreased significantly in the early stage,and the strength changed little in the later stage.At the same time,the addition of boric acid inhibited the crystallization of potassium struvite in cement,and with the increase of boric acid content,the content of potassium strudite decreased and changed from uneven prismatic to sharp cone.
关键词
硼酸/凝结时间/流动度/力学性能/钾鸟粪石Key words
boric acid/coagulation time/fluidity/mechanical properties/potassium struvite引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据