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Experimental Study on 2D Freezing in Saturated Soils
Extensive frost heave problems deriving from 2D freezing occurred behind retaining structures. A novel test apparatus was thus developed to observe frost heave behaviors governed by 2D growth of an ice lens. The results obtained showed that the moving characteristics of the freezing front, the frost heave process, and the change of water distribution were similar with that found in 1D freezing. However, the ice lens-dependent frost heave in 2D freezing accounted for less than 75% of that in 1D freezing due to the strong interactions between the frozen zone, the unfrozen zone, and the neighboring constraints. The geometry of an ice lens in 2D freezing within soil specimen was an arc. The relationship between geometry of ice lens and its location coordinate satisfied a parabolic function. The growth rate of ice lens perpendicular to thermal gradient was usually restrained in 1D freezing, whereas it made up nearly 100% of that parallel to thermal gradient in 2D freezing. The observations on anisotropic growth of ice lens in 2D freezing have significances to develop a frost heave model for coupled heat and mass transfer.
Experimental Study on 2D Freezing in Saturated Soils
Extensive frost heave problems deriving from 2D freezing occurred behind retaining structures. A novel test apparatus was thus developed to observe frost heave behaviors governed by 2D growth of an ice lens. The results obtained showed that the moving characteristics of the freezing front, the frost heave process, and the change of water distribution were similar with that found in 1D freezing. However, the ice lens-dependent frost heave in 2D freezing accounted for less than 75% of that in 1D freezing due to the strong interactions between the frozen zone, the unfrozen zone, and the neighboring constraints. The geometry of an ice lens in 2D freezing within soil specimen was an arc. The relationship between geometry of ice lens and its location coordinate satisfied a parabolic function. The growth rate of ice lens perpendicular to thermal gradient was usually restrained in 1D freezing, whereas it made up nearly 100% of that parallel to thermal gradient in 2D freezing. The observations on anisotropic growth of ice lens in 2D freezing have significances to develop a frost heave model for coupled heat and mass transfer.
Experimental Study on 2D Freezing in Saturated Soils
Zhao, Xiaodong (author) / Li, Ting (author) / Ji, Yukun (author) / Wang, Haihang (author)
2021-02-03
Article (Journal)
Electronic Resource
Unknown
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