Three-dimensional pore characterization of intact loess and compacted loess with micron scale computed tomography and mercury intrusion porosimetry

Abstract The pore structure is one of the most important properties of soil, which can directly affect the other properties such as water content, permeability and strength. It is of great significance to study the soil pore structure for agricultural cultivation, water and soil conservation and eng...

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Autores principales:	Linxin Zhang, Shengwen Qi, Lina Ma, Songfeng Guo, Zhiqing Li, Guoliang Li, Jijin Yang, Yu Zou, Tonglu Li, Xiaokun Hou
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/35c9ae1e98cd40f18d85d7b221e6f903
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spelling	oai:doaj.org-article:35c9ae1e98cd40f18d85d7b221e6f9032021-12-02T14:59:09ZThree-dimensional pore characterization of intact loess and compacted loess with micron scale computed tomography and mercury intrusion porosimetry10.1038/s41598-020-65302-82045-2322https://doaj.org/article/35c9ae1e98cd40f18d85d7b221e6f9032020-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-65302-8https://doaj.org/toc/2045-2322Abstract The pore structure is one of the most important properties of soil, which can directly affect the other properties such as water content, permeability and strength. It is of great significance to study the soil pore structure for agricultural cultivation, water and soil conservation and engineering construction. This paper investigates the 3D pore characterization of intact loess and four kinds of compacted loess (with different dry density) in northwest China. Micro scale computed tomography and mercury intrusion porosimetry tests were performed to get the porosity, specific surface area, pore size distribution, connected pores content and isolated pores content of different samples. Results show that the intact loess has more connected pores than the compacted loess, and the compacted loess whose dry density appears to be modelled well still have different pore structure with the intact loess. In addition, as the compactness increasing, the large pores (>13 μm) were firstly broken into medium pores (8~13 μm) and some small pores (<8 μm) until the pore structure was close to the natural structure of the intact loess, after that medium pores began to be broken into small pores.Linxin ZhangShengwen QiLina MaSongfeng GuoZhiqing LiGuoliang LiJijin YangYu ZouTonglu LiXiaokun HouNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-15 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Linxin Zhang Shengwen Qi Lina Ma Songfeng Guo Zhiqing Li Guoliang Li Jijin Yang Yu Zou Tonglu Li Xiaokun Hou Three-dimensional pore characterization of intact loess and compacted loess with micron scale computed tomography and mercury intrusion porosimetry
description	Abstract The pore structure is one of the most important properties of soil, which can directly affect the other properties such as water content, permeability and strength. It is of great significance to study the soil pore structure for agricultural cultivation, water and soil conservation and engineering construction. This paper investigates the 3D pore characterization of intact loess and four kinds of compacted loess (with different dry density) in northwest China. Micro scale computed tomography and mercury intrusion porosimetry tests were performed to get the porosity, specific surface area, pore size distribution, connected pores content and isolated pores content of different samples. Results show that the intact loess has more connected pores than the compacted loess, and the compacted loess whose dry density appears to be modelled well still have different pore structure with the intact loess. In addition, as the compactness increasing, the large pores (>13 μm) were firstly broken into medium pores (8~13 μm) and some small pores (<8 μm) until the pore structure was close to the natural structure of the intact loess, after that medium pores began to be broken into small pores.
format	article
author	Linxin Zhang Shengwen Qi Lina Ma Songfeng Guo Zhiqing Li Guoliang Li Jijin Yang Yu Zou Tonglu Li Xiaokun Hou
author_facet	Linxin Zhang Shengwen Qi Lina Ma Songfeng Guo Zhiqing Li Guoliang Li Jijin Yang Yu Zou Tonglu Li Xiaokun Hou
author_sort	Linxin Zhang
title	Three-dimensional pore characterization of intact loess and compacted loess with micron scale computed tomography and mercury intrusion porosimetry
title_short	Three-dimensional pore characterization of intact loess and compacted loess with micron scale computed tomography and mercury intrusion porosimetry
title_full	Three-dimensional pore characterization of intact loess and compacted loess with micron scale computed tomography and mercury intrusion porosimetry
title_fullStr	Three-dimensional pore characterization of intact loess and compacted loess with micron scale computed tomography and mercury intrusion porosimetry
title_full_unstemmed	Three-dimensional pore characterization of intact loess and compacted loess with micron scale computed tomography and mercury intrusion porosimetry
title_sort	three-dimensional pore characterization of intact loess and compacted loess with micron scale computed tomography and mercury intrusion porosimetry
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/35c9ae1e98cd40f18d85d7b221e6f903
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Three-dimensional pore characterization of intact loess and compacted loess with micron scale computed tomography and mercury intrusion porosimetry

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