摘要
为了研究超细粉体在水泥基材料中的应用,对掺加不同活性超细粉体的水泥基试件进行了抗压强度和抗折强度的测试,讨论了矿粉A掺量、硅粉掺量、复掺矿粉A和硅粉对水泥基材料力学性能的影响。结论表明:活性超细粉体对水泥基试件的抗折和抗压强度有较大影响,尤其是硅粉能够很好地提高试件的抗折强度和抗压强度。通过SEM形貌分析,说明掺加的超细粉体能够与水泥基材料内部的不利成分Ca(OH)2发生二次水化反应,生成有利的C-S-H凝胶,有效改善水泥基材料的微观结构。
To study the application of ultrafine powder in cement- based material, the cement-based samples mixed different reactive min- eral composite additive were tested on the flexural strength and compressive strength, The effects of several factors such as the volume of mineral powder A, the volume of silica fume, and the percentage of mineral powder A blending with silica fume, on the mechanical properties of cement-based material were discussed. The results showed that the ultrafine powder of reactive mineral composite additive influenced greatly the flexural strength and compressive strength of cement-based material. Especially the silica fume can improved the flexural strength and compressive strength better. The SEM analysis showed that the second hydratation of ultrafine powder together with the disadvantage component Ca（OH）2 inside the samples occured to produce the advan- tage C S H gel and to reform the microstructure of cement-based materials effectively.
出处
《中国粉体技术》
CAS
2006年第2期4-7,共4页
China Powder Science and Technology
基金
科技部社会公益研究专项资金项目
编号:2000DIB10077。
关键词
超细粉体
水泥基材料
抗折强度
抗压强度
ultrafine powder
cement-based materials
flexural strength
compressive strength
作者简介
乔宏霞（1977-）,女,讲师,博士研究生.E-mail：qiaohx7706@163.com.
