Effect of water distribution patterns on the activation energy of unsaturated soils during phase transformation

Abstract Unsaturated soils in vadose zones often experience periodic phase changes during seasonal temperature fluctuations. The liquid in partially saturated soils significantly affects the physical and chemical processes associated with the phase transformations. This study examined the role of wa...

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Autores principales:	Junghee Park, Hyung‐Koo Yoon, Jongchan Kim
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Environmental sciences GE1-350 Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/fd96a03f5ee8434e947e85aa365ec044
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spelling	oai:doaj.org-article:fd96a03f5ee8434e947e85aa365ec0442021-11-25T13:30:34ZEffect of water distribution patterns on the activation energy of unsaturated soils during phase transformation1539-166310.1002/vzj2.20170https://doaj.org/article/fd96a03f5ee8434e947e85aa365ec0442021-11-01T00:00:00Zhttps://doi.org/10.1002/vzj2.20170https://doaj.org/toc/1539-1663Abstract Unsaturated soils in vadose zones often experience periodic phase changes during seasonal temperature fluctuations. The liquid in partially saturated soils significantly affects the physical and chemical processes associated with the phase transformations. This study examined the role of water distribution patterns on the activation energy of unsaturated soils. The results revealed that the homogeneously mixed and evaporation‐driven specimens exhibited higher activation energy than the horizontally layered specimen, which exhibited the lowest activation energy. In addition, the activation energy results indicated that the induction time, increased with an increase in the water saturation, requires a longer induction time and results in a more significant difference in the final products, such as elastic wave velocities, during the freezing process. In addition, the activation energy and soil stiffness results revealed that the homogeneous system required a higher activation energy than the heterogeneous system. The higher heterogeneity degree of the vertically and horizontally layered water specimens delayed the primary water‐to‐ice phase change. This study recognizes the significance of heterogeneity in activation energy for phase transformation in unsaturated particulate media.Junghee ParkHyung‐Koo YoonJongchan KimWileyarticleEnvironmental sciencesGE1-350GeologyQE1-996.5ENVadose Zone Journal, Vol 20, Iss 6, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Environmental sciences GE1-350 Geology QE1-996.5
spellingShingle	Environmental sciences GE1-350 Geology QE1-996.5 Junghee Park Hyung‐Koo Yoon Jongchan Kim Effect of water distribution patterns on the activation energy of unsaturated soils during phase transformation
description	Abstract Unsaturated soils in vadose zones often experience periodic phase changes during seasonal temperature fluctuations. The liquid in partially saturated soils significantly affects the physical and chemical processes associated with the phase transformations. This study examined the role of water distribution patterns on the activation energy of unsaturated soils. The results revealed that the homogeneously mixed and evaporation‐driven specimens exhibited higher activation energy than the horizontally layered specimen, which exhibited the lowest activation energy. In addition, the activation energy results indicated that the induction time, increased with an increase in the water saturation, requires a longer induction time and results in a more significant difference in the final products, such as elastic wave velocities, during the freezing process. In addition, the activation energy and soil stiffness results revealed that the homogeneous system required a higher activation energy than the heterogeneous system. The higher heterogeneity degree of the vertically and horizontally layered water specimens delayed the primary water‐to‐ice phase change. This study recognizes the significance of heterogeneity in activation energy for phase transformation in unsaturated particulate media.
format	article
author	Junghee Park Hyung‐Koo Yoon Jongchan Kim
author_facet	Junghee Park Hyung‐Koo Yoon Jongchan Kim
author_sort	Junghee Park
title	Effect of water distribution patterns on the activation energy of unsaturated soils during phase transformation
title_short	Effect of water distribution patterns on the activation energy of unsaturated soils during phase transformation
title_full	Effect of water distribution patterns on the activation energy of unsaturated soils during phase transformation
title_fullStr	Effect of water distribution patterns on the activation energy of unsaturated soils during phase transformation
title_full_unstemmed	Effect of water distribution patterns on the activation energy of unsaturated soils during phase transformation
title_sort	effect of water distribution patterns on the activation energy of unsaturated soils during phase transformation
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/fd96a03f5ee8434e947e85aa365ec044
work_keys_str_mv	AT jungheepark effectofwaterdistributionpatternsontheactivationenergyofunsaturatedsoilsduringphasetransformation AT hyungkooyoon effectofwaterdistributionpatternsontheactivationenergyofunsaturatedsoilsduringphasetransformation AT jongchankim effectofwaterdistributionpatternsontheactivationenergyofunsaturatedsoilsduringphasetransformation
_version_	1718413476618043392

Effect of water distribution patterns on the activation energy of unsaturated soils during phase transformation

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