Experimental study of the freeze thaw characteristics of expansive soil slope models with different initial moisture contents

Abstract This paper presents an experimental investigation on the effect of freeze–thaw cycling on expansive soil slopes with different initial moisture contents. Clay soil from Weifang, China, was remolded and selected to build the expansive soil slope for the indoor slope model tests. A total of f...

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Autores principales:	Zhongnian Yang, Jianhang Lv, Wei Shi, Chao Jia, Chu Wang, Yong Hong, Xianzhang Ling
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/10ba6535a881492588fcde20fd43c49a
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spelling	oai:doaj.org-article:10ba6535a881492588fcde20fd43c49a2021-12-05T12:13:30ZExperimental study of the freeze thaw characteristics of expansive soil slope models with different initial moisture contents10.1038/s41598-021-02662-92045-2322https://doaj.org/article/10ba6535a881492588fcde20fd43c49a2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02662-9https://doaj.org/toc/2045-2322Abstract This paper presents an experimental investigation on the effect of freeze–thaw cycling on expansive soil slopes with different initial moisture contents. Clay soil from Weifang, China, was remolded and selected to build the expansive soil slope for the indoor slope model tests. A total of five freeze–thaw cycles were applied to the three expansive soil slopes with different moisture contents ranging from 20 to 40%. Variations of the crack developments, displacements, soil pressures and moisture contents of the expansive soil slope with different initial moisture contents during the freeze–thaw cycling were reported and discussed. The results indicate that higher moisture contents can slow the development of cracks and that the soil pressure increases with decreasing temperature. The soil pressure of slope decreases after freeze–thaw cycle, and the change amplitude of soil pressure after freeze–thaw is proportional to water content. The slopes with a moisture content of 20% and 30% shrinks during freezing and expands during thawing, which was named ES-FSTE Model, while the slope with a 40% moisture content shows the opposite behavior. During freeze–thaw cycles, moisture migrates to slope surface. As initial moisture contents increase, the soil heat transfer rate and bearing capacity decreases after five freeze–thaw cycling.Zhongnian YangJianhang LvWei ShiChao JiaChu WangYong HongXianzhang LingNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zhongnian Yang Jianhang Lv Wei Shi Chao Jia Chu Wang Yong Hong Xianzhang Ling Experimental study of the freeze thaw characteristics of expansive soil slope models with different initial moisture contents
description	Abstract This paper presents an experimental investigation on the effect of freeze–thaw cycling on expansive soil slopes with different initial moisture contents. Clay soil from Weifang, China, was remolded and selected to build the expansive soil slope for the indoor slope model tests. A total of five freeze–thaw cycles were applied to the three expansive soil slopes with different moisture contents ranging from 20 to 40%. Variations of the crack developments, displacements, soil pressures and moisture contents of the expansive soil slope with different initial moisture contents during the freeze–thaw cycling were reported and discussed. The results indicate that higher moisture contents can slow the development of cracks and that the soil pressure increases with decreasing temperature. The soil pressure of slope decreases after freeze–thaw cycle, and the change amplitude of soil pressure after freeze–thaw is proportional to water content. The slopes with a moisture content of 20% and 30% shrinks during freezing and expands during thawing, which was named ES-FSTE Model, while the slope with a 40% moisture content shows the opposite behavior. During freeze–thaw cycles, moisture migrates to slope surface. As initial moisture contents increase, the soil heat transfer rate and bearing capacity decreases after five freeze–thaw cycling.
format	article
author	Zhongnian Yang Jianhang Lv Wei Shi Chao Jia Chu Wang Yong Hong Xianzhang Ling
author_facet	Zhongnian Yang Jianhang Lv Wei Shi Chao Jia Chu Wang Yong Hong Xianzhang Ling
author_sort	Zhongnian Yang
title	Experimental study of the freeze thaw characteristics of expansive soil slope models with different initial moisture contents
title_short	Experimental study of the freeze thaw characteristics of expansive soil slope models with different initial moisture contents
title_full	Experimental study of the freeze thaw characteristics of expansive soil slope models with different initial moisture contents
title_fullStr	Experimental study of the freeze thaw characteristics of expansive soil slope models with different initial moisture contents
title_full_unstemmed	Experimental study of the freeze thaw characteristics of expansive soil slope models with different initial moisture contents
title_sort	experimental study of the freeze thaw characteristics of expansive soil slope models with different initial moisture contents
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/10ba6535a881492588fcde20fd43c49a
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Experimental study of the freeze thaw characteristics of expansive soil slope models with different initial moisture contents

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