Laboratory Investigation of the Effect of Nano-Silica on Unconfined Compressive Strength and Frost Heaving Characteristics of Silty Clay

doi:10.1007/s11204-018-9548-7

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	Laboratory Investigation of the Effect of Nano-Silica on Unconfined Compressive Strength and Frost Heaving Characteristics of Silty Clay
	Hu, Kai1,2 ; Chen, Xiaoqing1 ; Chen, Jiangang1 ; Ren, Xiaochuan 3
刊名	SOIL MECHANICS AND FOUNDATION ENGINEERING
	2018-11-01
卷号	55 期号:5 页码:352-357
关键词	nano-silica Unconfined Compressive Strength Frost Heaving Characteristics
ISSN号	0038-0741
DOI	10.1007/s11204-018-9548-7
产权排序	1
文献子类	Article
英文摘要	In order to investigate the effect of nano-silica on the unconfined compressive strength and frost heaving characteristics of silty clay, a series of indoor tests of unconfined compressive strength, frost heaving, and mercury intrusion porosimetry (MIP) was done on silty clay with different nano-silica content. The unconfined compressive strength of silty clay increased with increases in nano-silica content, and increased by 6.65 times when the nano-silica content was 5.0%. However, the frost heaving displacement decreased with increases in the nano-silica content. The results of MIP tests illustrated that the volume and number of large pores decreased, and the volume and numbers of small pores increased with increases in the nano-silica content. An increase in the nano-silica content increased the porosity and decreased the average pore diameter. The formation of viscous gel by addition of nano-silica into silty clay enhanced the bonding and filled the gaps between particles of silty clay and blocked the migration of water in the soil. The microscopic pore structure of the sample was generally uniform with increasing nano-silica content, which resulted in an increase in unconfined compressive strength and a decrease in frost heaving displacement.
资助项目	West Light Foundation of Chinese Academy of Sciences ; Science and Technology Service Network Initiative[KFJ-EW-STS-094] ; Key National Key Technology Research and Development Program of China[2014BAL05B01]
WOS研究方向	Engineering
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000452670100010
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/24717]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Hu, Kai
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Sichuan, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.Lanzhou Univ, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Hu, Kai,Chen, Xiaoqing,Chen, Jiangang,et al. Laboratory Investigation of the Effect of Nano-Silica on Unconfined Compressive Strength and Frost Heaving Characteristics of Silty Clay[J]. SOIL MECHANICS AND FOUNDATION ENGINEERING,2018,55(5):352-357.
APA	Hu, Kai,Chen, Xiaoqing,Chen, Jiangang,&Ren, Xiaochuan.(2018).Laboratory Investigation of the Effect of Nano-Silica on Unconfined Compressive Strength and Frost Heaving Characteristics of Silty Clay.SOIL MECHANICS AND FOUNDATION ENGINEERING,55(5),352-357.
MLA	Hu, Kai,et al."Laboratory Investigation of the Effect of Nano-Silica on Unconfined Compressive Strength and Frost Heaving Characteristics of Silty Clay".SOIL MECHANICS AND FOUNDATION ENGINEERING 55.5(2018):352-357.