Study on Characteristics of Hydro-Thermal Transfer and Freezing-Thawing of Soil-Rock Mixtures

WANG Yindong; LU Jianguo; WAN Xunsheng; TAN Lilin; DENG Fei; ZHOU Xiaoxun

doi:10.3724/j.gyjzG22082708

Volume 54 Issue 3

Mar. 2024

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WANG Yindong, LU Jianguo, WAN Xunsheng, TAN Lilin, DENG Fei, ZHOU Xiaoxun. Study on Characteristics of Hydro-Thermal Transfer and Freezing-Thawing of Soil-Rock Mixtures[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(3): 174-181. doi: 10.3724/j.gyjzG22082708

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Study on Characteristics of Hydro-Thermal Transfer and Freezing-Thawing of Soil-Rock Mixtures

doi: 10.3724/j.gyjzG22082708

10%, 25%, 40

Received Date: 2022-08-27
Available Online: 2024-05-29

Abstract

Abstract

The rock content in freezing-thawing cycles is one of the key factors influencing the hydro-thermal transfer and freezing-thaw transferring characteristics of soil-rock mixtures. To study the effect of freezing-thawing cycles on hydro-thermal transfer, frost heave and thawing settlement of soil-rock mixtures, the soil-rock mixtures composed by Qinghai-Tibet silty clay and gravel with different stone content ratios (10%, 25%, 40%) were selected as research objects, and 10 unidirectional freezing-thawing cycles were conducted. The results indicated that the differences in the temperature and unfrozen water content of soil-rock mixtures during the freezing-thaw cycles had a strong correlation with the rock content. With an increase in the rock content, the completely frozen time for soil-rock mixtures has been extended, and the variable rate of the unfrozen wate content decreased. The difference of buried depth mainly influenced the temperature transfer of soil-rock mixture, and had an indirect effect on the variation of volumetric unfrozen water. For the samples with stone contents of 10% and 40%, the displacement change was manifested as shrinkage during freezing and expansion after thawing, and with an increase in the stone content, the shrinkage of specimens during freezing tended to decrease.
- freezing-thawing cycle,
- soil-rock clay mixture,
- hydro-thermal transfer,
- volumetric unfrozen water content,
- frost heave and thawing settlement

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References(36)

References

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