Study on Thermal Disturbance of Frozen Soil Around Piles by Concrete Hydration Heat
Abstract In order to study the influence of the heat of hydration of concrete on the thermal disturbance of the frozen soil around the pile during the construction of cast-in-place piles in permafrost regions, a two-dimensional temperature field numerical model was established with non-steady state...
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crioppubl:10.1088/1742-6596/2301/1/012018 2024-06-02T08:13:06+00:00 Study on Thermal Disturbance of Frozen Soil Around Piles by Concrete Hydration Heat Sen, Kong Jialong, Liu Rui, Liang Baoqi, Wang 2022 http://dx.doi.org/10.1088/1742-6596/2301/1/012018 https://iopscience.iop.org/article/10.1088/1742-6596/2301/1/012018 https://iopscience.iop.org/article/10.1088/1742-6596/2301/1/012018/pdf unknown IOP Publishing http://creativecommons.org/licenses/by/3.0/ https://iopscience.iop.org/info/page/text-and-data-mining Journal of Physics: Conference Series volume 2301, issue 1, page 012018 ISSN 1742-6588 1742-6596 journal-article 2022 crioppubl https://doi.org/10.1088/1742-6596/2301/1/012018 2024-05-07T14:06:44Z Abstract In order to study the influence of the heat of hydration of concrete on the thermal disturbance of the frozen soil around the pile during the construction of cast-in-place piles in permafrost regions, a two-dimensional temperature field numerical model was established with non-steady state based on the heat conduction control equation and the freezing-thawing phase transition process. This model has been used to analyze and discuss the refreezing process of the concrete pile foundation, the heat flow transfer process between the pile foundation and the frozen soil, and the positive temperature curing process of the pile body. The research results have shown that the refreezing process of the pile foundation is a slow process. It took 28 days after the completion of the pile foundation construction that the negative temperature arose at the bottom of the pile. And 196 days after construction the temperature at the center of the pile dropped to negative. The heat brought by the cast-in-place pile is mainly released to the surrounding soil through the horizontal heat flow, and the thermal conductivity of the soil has a greater influence on this process. Article in Journal/Newspaper permafrost IOP Publishing Journal of Physics: Conference Series 2301 1 012018 |
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Abstract In order to study the influence of the heat of hydration of concrete on the thermal disturbance of the frozen soil around the pile during the construction of cast-in-place piles in permafrost regions, a two-dimensional temperature field numerical model was established with non-steady state based on the heat conduction control equation and the freezing-thawing phase transition process. This model has been used to analyze and discuss the refreezing process of the concrete pile foundation, the heat flow transfer process between the pile foundation and the frozen soil, and the positive temperature curing process of the pile body. The research results have shown that the refreezing process of the pile foundation is a slow process. It took 28 days after the completion of the pile foundation construction that the negative temperature arose at the bottom of the pile. And 196 days after construction the temperature at the center of the pile dropped to negative. The heat brought by the cast-in-place pile is mainly released to the surrounding soil through the horizontal heat flow, and the thermal conductivity of the soil has a greater influence on this process. |
format |
Article in Journal/Newspaper |
author |
Sen, Kong Jialong, Liu Rui, Liang Baoqi, Wang |
spellingShingle |
Sen, Kong Jialong, Liu Rui, Liang Baoqi, Wang Study on Thermal Disturbance of Frozen Soil Around Piles by Concrete Hydration Heat |
author_facet |
Sen, Kong Jialong, Liu Rui, Liang Baoqi, Wang |
author_sort |
Sen, Kong |
title |
Study on Thermal Disturbance of Frozen Soil Around Piles by Concrete Hydration Heat |
title_short |
Study on Thermal Disturbance of Frozen Soil Around Piles by Concrete Hydration Heat |
title_full |
Study on Thermal Disturbance of Frozen Soil Around Piles by Concrete Hydration Heat |
title_fullStr |
Study on Thermal Disturbance of Frozen Soil Around Piles by Concrete Hydration Heat |
title_full_unstemmed |
Study on Thermal Disturbance of Frozen Soil Around Piles by Concrete Hydration Heat |
title_sort |
study on thermal disturbance of frozen soil around piles by concrete hydration heat |
publisher |
IOP Publishing |
publishDate |
2022 |
url |
http://dx.doi.org/10.1088/1742-6596/2301/1/012018 https://iopscience.iop.org/article/10.1088/1742-6596/2301/1/012018 https://iopscience.iop.org/article/10.1088/1742-6596/2301/1/012018/pdf |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Journal of Physics: Conference Series volume 2301, issue 1, page 012018 ISSN 1742-6588 1742-6596 |
op_rights |
http://creativecommons.org/licenses/by/3.0/ https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1742-6596/2301/1/012018 |
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Journal of Physics: Conference Series |
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2301 |
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1 |
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012018 |
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1800759749849907200 |