气候变化领域集成服务门户(CCPortal): Experimental and Statistical Studies of the Microstructure Characteristics of Nano-Silica-Modified Silty Clay in the Qinghai-Tibet Plateau

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DOI	10.3390/app13053074
	Experimental and Statistical Studies of the Microstructure Characteristics of Nano-Silica-Modified Silty Clay in the Qinghai-Tibet Plateau
	Li, Kunyu; Wang, Chong; Li, Jianguo; Xie, Liang; Wu, Yumo; Li, Shuangyang
发表日期	2023
EISSN	2076-3417
卷号	13 期号:5
英文摘要	Nanomaterials have been widely used for improving the physicochemical properties of geomaterials. However, quantitative interpretation of the microscopic mechanisms is still not well understood. In this study, a statistical principle was applied to study the microscopic characteristics of nano-silica (NS) modified silty clay. We use mercury intrusion porosimetry (MIP) to measure the micro-pore parameters (median pore diameter and cumulative volume of pore diameters smaller than 0.1 mu m) based on various NS-modified silty clays (NS mass contents 0, 0.25%, 1%, and 3%). The test results indicate two micro-pore parameters have significant randomness and uncertainty, and soil pores become smaller and more compacted. Furthermore, four potential probability distributions were selected to compare with measured data. All distributions agree excellently with the experimental data, and three distributions satisfy the hypothesis testing, except the Weibull distribution. Finally, according to the information spread estimation method and chi-square test effect evaluation indexes, the normal distribution was proposed because it has the optimal described effect for the statistical characteristics of NS-modified silty clay. These results have important implications for understanding the randomness and evolution of microstructures of NS geomaterials, which are helpful to guide the evaluation of freezing process and water transport in modified soils.
关键词	pore size distribution Qinghai-Tibet Plateau scanning electron microscopy statistical analysis mercury intrusion porosimetry
英文关键词	PORE STRUCTURE; CEMENT; PASTES; SOILS
WOS研究方向	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000948307700001
来源期刊	APPLIED SCIENCES-BASEL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283168
作者单位	Lanzhou University; Lanzhou University; Chinese Academy of Sciences
推荐引用方式 GB/T 7714	Li, Kunyu,Wang, Chong,Li, Jianguo,et al. Experimental and Statistical Studies of the Microstructure Characteristics of Nano-Silica-Modified Silty Clay in the Qinghai-Tibet Plateau[J],2023,13(5).
APA	Li, Kunyu,Wang, Chong,Li, Jianguo,Xie, Liang,Wu, Yumo,&Li, Shuangyang.(2023).Experimental and Statistical Studies of the Microstructure Characteristics of Nano-Silica-Modified Silty Clay in the Qinghai-Tibet Plateau.APPLIED SCIENCES-BASEL,13(5).
MLA	Li, Kunyu,et al."Experimental and Statistical Studies of the Microstructure Characteristics of Nano-Silica-Modified Silty Clay in the Qinghai-Tibet Plateau".APPLIED SCIENCES-BASEL 13.5(2023).