Study on the effect of nanosilica suspension on the properties of cement-based grouts

被引：3
|
作者：
Li, Shuiping [1 ]
Chao, Wei [1 ]
Li, Wei [1 ]
Cheng, Jian [1 ]
Yuan, Bin [1 ]
机构：
[1] Yangzhou Univ, Coll Architectural Sci & Engn, Yangzhou, Peoples R China
来源：
MATERIALS SCIENCE-POLAND | 2022年 / 40卷 / 04期
关键词：
cement; nanosilica; scanning electron microscope; compressive strength; HIGH-PERFORMANCE CONCRETE; COMPRESSIVE STRENGTH; NANO-SIO2; HYDRATION; WORKABILITY;
D O I：
10.2478/msp-2022-0054
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The agglomeration trend of nanosilica particles was found to significantly affect the properties of cement-based materials. The influence of nanosilica suspension on the fluidity, setting time, and compressive strength of cement-based grouts were studied. The hardened pastes were characterized by thermogravimetric (TG) analysis and scanning electron microscopy (SEM). The results showed that the fluidity of cement-based grouts with nanosilica suspension had obviously improved. The setting time was obviously decreased, compared with the reference sample. The compressive strengths for 1 day, 3 days, and 28 days were 12.8%, 14.3%, and 10.1% higher than that of the reference group, respectively. This paper may provide a novel route to improve the mechanical properties of cement-based materials without affecting their workability.
引用
收藏
页码：171 / 182
页数：12
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