Analytical model to predict unfrozen water content based on the probability of ice formation in soils
Abstract The variation in unfrozen water content with temperature substantially affects coupled heat and water transport in frozen soil, causing frost heave and thaw settlement owing to the ice and water phase change and influencing soil stability in cold regions. Thus, analyzing the mechanism of wa...
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Online Access: | http://dx.doi.org/10.1002/ppp.2167 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2167 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2167 |
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crwiley:10.1002/ppp.2167 2024-06-02T08:13:10+00:00 Analytical model to predict unfrozen water content based on the probability of ice formation in soils Wan, Xusheng Pei, Wansheng Lu, Jianguo Qiu, Enxi Yan, Zhongrui Pirhadi, Nima Zhu, Jishuai Natural Science Foundation of Sichuan Province Sichuan Province Science and Technology Support Program National Natural Science Foundation of China Youth Innovation Promotion Association of the Chinese Academy of Sciences 2022 http://dx.doi.org/10.1002/ppp.2167 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2167 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2167 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 33, issue 4, page 436-451 ISSN 1045-6740 1099-1530 journal-article 2022 crwiley https://doi.org/10.1002/ppp.2167 2024-05-03T11:22:16Z Abstract The variation in unfrozen water content with temperature substantially affects coupled heat and water transport in frozen soil, causing frost heave and thaw settlement owing to the ice and water phase change and influencing soil stability in cold regions. Thus, analyzing the mechanism of water freezing and building a predictive model for the unfrozen water content of soils is paramount. In this study, an analytical model based on equivalent contact angle was developed to predict the unfrozen water content. The relationship between the equivalent contact angle and temperature was obtained based on the assumption that the heterogeneous nucleation rate nonlinearly decreased with temperature. The proposed analytical model was validated using existing unfrozen water content data at various temperatures for a silty clay soil material from the Qinghai–Tibet Plateau, and compared to several existing numerical models which predict unfrozen water content in soil materials. The results revealed a close relationship between the unfrozen water content and equivalent contact angle, and the equivalent contact angle increased as the temperature decreased. Meanwhile, the pore water in the soil first froze when the contact angle was smaller. Moreover, the values predicted by the analytical model for the unfrozen water content agreed well with the experimental results, especially under low‐temperature conditions and during the early stage of water freezing. Article in Journal/Newspaper Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 33 4 436 451 |
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English |
description |
Abstract The variation in unfrozen water content with temperature substantially affects coupled heat and water transport in frozen soil, causing frost heave and thaw settlement owing to the ice and water phase change and influencing soil stability in cold regions. Thus, analyzing the mechanism of water freezing and building a predictive model for the unfrozen water content of soils is paramount. In this study, an analytical model based on equivalent contact angle was developed to predict the unfrozen water content. The relationship between the equivalent contact angle and temperature was obtained based on the assumption that the heterogeneous nucleation rate nonlinearly decreased with temperature. The proposed analytical model was validated using existing unfrozen water content data at various temperatures for a silty clay soil material from the Qinghai–Tibet Plateau, and compared to several existing numerical models which predict unfrozen water content in soil materials. The results revealed a close relationship between the unfrozen water content and equivalent contact angle, and the equivalent contact angle increased as the temperature decreased. Meanwhile, the pore water in the soil first froze when the contact angle was smaller. Moreover, the values predicted by the analytical model for the unfrozen water content agreed well with the experimental results, especially under low‐temperature conditions and during the early stage of water freezing. |
author2 |
Natural Science Foundation of Sichuan Province Sichuan Province Science and Technology Support Program National Natural Science Foundation of China Youth Innovation Promotion Association of the Chinese Academy of Sciences |
format |
Article in Journal/Newspaper |
author |
Wan, Xusheng Pei, Wansheng Lu, Jianguo Qiu, Enxi Yan, Zhongrui Pirhadi, Nima Zhu, Jishuai |
spellingShingle |
Wan, Xusheng Pei, Wansheng Lu, Jianguo Qiu, Enxi Yan, Zhongrui Pirhadi, Nima Zhu, Jishuai Analytical model to predict unfrozen water content based on the probability of ice formation in soils |
author_facet |
Wan, Xusheng Pei, Wansheng Lu, Jianguo Qiu, Enxi Yan, Zhongrui Pirhadi, Nima Zhu, Jishuai |
author_sort |
Wan, Xusheng |
title |
Analytical model to predict unfrozen water content based on the probability of ice formation in soils |
title_short |
Analytical model to predict unfrozen water content based on the probability of ice formation in soils |
title_full |
Analytical model to predict unfrozen water content based on the probability of ice formation in soils |
title_fullStr |
Analytical model to predict unfrozen water content based on the probability of ice formation in soils |
title_full_unstemmed |
Analytical model to predict unfrozen water content based on the probability of ice formation in soils |
title_sort |
analytical model to predict unfrozen water content based on the probability of ice formation in soils |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/ppp.2167 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2167 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2167 |
genre |
Permafrost and Periglacial Processes |
genre_facet |
Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 33, issue 4, page 436-451 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.2167 |
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Permafrost and Periglacial Processes |
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33 |
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4 |
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436 |
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451 |
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1800736531561840640 |