摘要
采用水泥砂浆流变仪、有机碳测定仪、电子显微镜等测试了含云母粉的水泥砂浆流动性、流变参数、云母粉对聚羧酸减水剂的吸附以及云母粉的颗粒形貌,研究了云母粉对水泥砂浆流动性的影响。结果表明:含云母粉的水泥砂浆流动性降低、黏度增加、触变性增大;云母粉对聚羧酸减水剂的吸附不及水泥,不是造成水泥砂浆流动性问题的主要原因,而云母粉颗粒扁平状形貌才是造成水泥砂浆流动性问题的关键因素。
The cement mortar rheometer,organic carbon analyzer,electron microscope were used to test the fluidity,rheological parameters,adsorption of mica fine to the polycarboxylicate superplasticizer and the particle morphology of mica fine.The effect of mica fine on the fluidity of cement mortar was discussed.The results show that the mica fine contained cement mortar has low flu-idity,high viscosity,and bigger thixotropy.The adsorption of mica fine to the polycarboxylate superplasticizer is not as good as ce-ment,which is not the main reason causing the fluidity problem of cement mortar.Flat morphology of the mica fine is the key fac-tor causing the fluidity of cement mortar.
作者
毛永琳
舒鑫
张倩倩
杨勇
MAO Yonglin;SHU Xin;ZHANG Qianqian;YANG Yong(State Key Laboratory of High Performance Civil Engineering Materials,Jiangsu Sobute New Materials Co.Ltd.,Nanjing 211103,China)
出处
《新型建筑材料》
北大核心
2020年第5期33-36,共4页
New Building Materials
基金
国家重点研发计划项目(2017YFB0310100)。
关键词
云母粉
聚羧酸减水剂
流变性能
吸附
mica fine
polycarboxylate superplasticizer
rheology
adsorption
