硅酸盐学报2017，Vol.45Issue(2)：220-226,7.DOI:10.14062/j.issn.0454-5648.2017.02.07
含不同形态硅灰的复合胶凝材料浆体的流变学特性
Rheological Properties of Composite Binder Paste Containing Different Types of Silica Fume
摘要
Abstract
The rheological properties of composition binder pastes with raw silica fume and condensed silica fume at water to binder ratios of 0.25 and 0.30 were investigated by rheometry and mini slump cone measurement. The results show that composite binder paste with condensed silica fume (0–12%) has a greater yield stress from 0–5 Pa to 20–60 Pa, and a higher plastic viscosity from 1 500 mPa·s to 3 200 mPa·s. The paste with raw silica fume (0–12% addition) has the yield stress of 0–8 Pa and the plastic viscosity of 1 500–2 000 mPa·s. It is indicated that CSF increases the yield stress and plastic viscosity of pastes, RSF has the constant yield stress and plastic viscosity of pastes and an effect on the rheological properties. In addition, a liner relationship between yield stress and slump flow of the pastes with different types of silica fume was also proposed, and the correlation index isR2=0.911 16.关键词
流变性能/原状硅灰/加密硅灰/复合胶凝材料/屈服应力/塑性黏度Key words
rheological properties/raw silica fume/condensed silica fume/composite binder/yield stress/plastic viscosity分类
化学化工引用本文复制引用
刘娟红,张璇,韩方晖,阎培渝..含不同形态硅灰的复合胶凝材料浆体的流变学特性[J].硅酸盐学报,2017,45(2):220-226,7.基金项目
教育部博士点基金项目(20130002110033)。 （20130002110033）
