Analysis of Bound Water and Its Influence Factors in Mixed Clayey Soils

Bound water is an important factor in controlling the physical, chemical and mechanical properties of clayey soils, and it plays an important role in geotechnical engineering disaster prevention and environmental protection. There are many factors (such as soil texture, mineral composition, specific...

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Autores principales:	Er-Jing Yang, Zhao-Tian Zeng, Hong-Yan Mo, Tao Hu, Cheng-Lin Yang, Shuang-Hui Tang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	mixed clayey soils bound water mineral composition specific surface area (SSA) isothermal adsorption method Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/64704bd7fea5497293e1a31129332ced
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spelling	oai:doaj.org-article:64704bd7fea5497293e1a31129332ced2021-11-11T19:53:45ZAnalysis of Bound Water and Its Influence Factors in Mixed Clayey Soils10.3390/w132129912073-4441https://doaj.org/article/64704bd7fea5497293e1a31129332ced2021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/21/2991https://doaj.org/toc/2073-4441Bound water is an important factor in controlling the physical, chemical and mechanical properties of clayey soils, and it plays an important role in geotechnical engineering disaster prevention and environmental protection. There are many factors (such as soil texture, mineral composition, specific surface area (SSA), organic matter content, porosity and so on) that affect bound water in natural clayey soils. However, the main factors are mineral composition and specific surface area (SSA). Experimental tests on specific surface area and isothermal adsorption of a series of artificial mixed clayey soils were carried out to determine the different types of bound water. On this basis, the relationship between the bound water of mixed clayey soils and influencing factors of mineral composition and specific surface area are discussed. The results show that relative humidities of RH = 0.90 and 0.98, in an isothermal adsorption method, are the boundary-dividing points between strongly bound water and weakly bound water, and between weakly bound water and free water, respectively. The bound water content of the mixed clayey soils increased linearly with the montmorillonite content and specific surface area. Clay’s mineral composition (montmorillonite) was found to be the most fundamental influencing factor.Er-Jing YangZhao-Tian ZengHong-Yan MoTao HuCheng-Lin YangShuang-Hui TangMDPI AGarticlemixed clayey soilsbound watermineral compositionspecific surface area (SSA)isothermal adsorption methodHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 2991, p 2991 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	mixed clayey soils bound water mineral composition specific surface area (SSA) isothermal adsorption method Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	mixed clayey soils bound water mineral composition specific surface area (SSA) isothermal adsorption method Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Er-Jing Yang Zhao-Tian Zeng Hong-Yan Mo Tao Hu Cheng-Lin Yang Shuang-Hui Tang Analysis of Bound Water and Its Influence Factors in Mixed Clayey Soils
description	Bound water is an important factor in controlling the physical, chemical and mechanical properties of clayey soils, and it plays an important role in geotechnical engineering disaster prevention and environmental protection. There are many factors (such as soil texture, mineral composition, specific surface area (SSA), organic matter content, porosity and so on) that affect bound water in natural clayey soils. However, the main factors are mineral composition and specific surface area (SSA). Experimental tests on specific surface area and isothermal adsorption of a series of artificial mixed clayey soils were carried out to determine the different types of bound water. On this basis, the relationship between the bound water of mixed clayey soils and influencing factors of mineral composition and specific surface area are discussed. The results show that relative humidities of RH = 0.90 and 0.98, in an isothermal adsorption method, are the boundary-dividing points between strongly bound water and weakly bound water, and between weakly bound water and free water, respectively. The bound water content of the mixed clayey soils increased linearly with the montmorillonite content and specific surface area. Clay’s mineral composition (montmorillonite) was found to be the most fundamental influencing factor.
format	article
author	Er-Jing Yang Zhao-Tian Zeng Hong-Yan Mo Tao Hu Cheng-Lin Yang Shuang-Hui Tang
author_facet	Er-Jing Yang Zhao-Tian Zeng Hong-Yan Mo Tao Hu Cheng-Lin Yang Shuang-Hui Tang
author_sort	Er-Jing Yang
title	Analysis of Bound Water and Its Influence Factors in Mixed Clayey Soils
title_short	Analysis of Bound Water and Its Influence Factors in Mixed Clayey Soils
title_full	Analysis of Bound Water and Its Influence Factors in Mixed Clayey Soils
title_fullStr	Analysis of Bound Water and Its Influence Factors in Mixed Clayey Soils
title_full_unstemmed	Analysis of Bound Water and Its Influence Factors in Mixed Clayey Soils
title_sort	analysis of bound water and its influence factors in mixed clayey soils
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/64704bd7fea5497293e1a31129332ced
work_keys_str_mv	AT erjingyang analysisofboundwateranditsinfluencefactorsinmixedclayeysoils AT zhaotianzeng analysisofboundwateranditsinfluencefactorsinmixedclayeysoils AT hongyanmo analysisofboundwateranditsinfluencefactorsinmixedclayeysoils AT taohu analysisofboundwateranditsinfluencefactorsinmixedclayeysoils AT chenglinyang analysisofboundwateranditsinfluencefactorsinmixedclayeysoils AT shuanghuitang analysisofboundwateranditsinfluencefactorsinmixedclayeysoils
_version_	1718431353804947456

Analysis of Bound Water and Its Influence Factors in Mixed Clayey Soils

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