纳米硅溶胶的制备及在水泥基材料中的应用研究进展

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Abstract A various of nanomaterials were born with the development of nanotechnology, among which the colloidal nano-silica attracted more attention for its mature synthesis methods and obvious property enhancement to cement-based materials. The colloidal nano-silica (CNS) has recently become a research hotpot, especially in thearea which cement-based materials with incorporation of enormous low activity supplementary cementing materials (SCMs, such as fly ash, slag and glass powder). The reason is that it accelerates not only hydration rate of cement, but also improves mechanical property and pore structure of hardened cement stone. Two main synthesis methods of colloidal nano-silica are introduced in the paper, and its applications in cement-based materials at the past decade are also summarized.

Key words： colloidal nano-silica cement concrete fly ash supplementary cementing materials

Published: 08 January 2021

CLC number:

TQ177.62

Fund:This work was financially supported by the National Natural Science Foundation of China (51872137), the Postgraduate Research & Practice Innovation Program of Jiangsu Provinece (KYLX16_0588).

About author:: Zhiyi Xie received his B.S. degree in materials science and engineering from Yancheng Institute of Technology in 2016. He is currently pursuing his MA.Sc. degree at the College of Materials Science and Engineering, Nanjing Tech University under the supervision of Prof. Dongxu Li. His research has focused on the application of silica contained materials on cement-based materials.Dongxu Li received his B.E. degree and MA. Sc. degrees from Zhejiang University in 1982 and 1985, respectively. In 1985, he received his Ph.D. degree from Nanjing Tech University. After finished his postdoctoral research at Zhejiang University in 2000, he is currently a full professor in Nanjing Tech University. He is mainly engaged in research on the physical and chemical principles of new alkaline gelling materials, environmentally compatible gelling materials and biological materials, and the comprehensive utilization of solid industrial waste. He undertook the national “973” project, and served as the project leader of the third project “Research on Performance-Adjusting Auxiliary Cementing Components”. Energy-saving steel slag cement, one of his research results, had won the third prize of scientific and technological progress of the Ministry of Chemical Industry, the outstanding paper award of Jiangsu Province and the title of excellent instructor of postgraduate social practice. He has published more than 30 academic papers in important domestic and foreign journals in the past five years, and 9 papers have been included in SCI.

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	XIE Zhiyi
	ZHOU Han
	LI Qingchao
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Cite this article:

XIE Zhiyi,ZHOU Han,LI Qingchao, et al. Preparation, Application of Colloidal Nano-silica and Its Research Progress in Cement-based Materials[J]. Materials Reports, 2020, 34(Z2): 160-163.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2020/V34/IZ2/160

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