Separate-ice frost heave model for one-dimensional soil freezing process

Zhou, Guoqing; Zhou, Yang; Hu, Kun; Wang, Yijiang; Shang, Xiangyu

doi:10.1007/s11440-017-0579-4

Cited by 48 publications

(20 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Instead, we focus on the processes involved in segregated ice formation, which mostly describes the warmest or first ice lens ice based on the frozen fringe. They can be broadly divided into three types: rigid ice models (ONeill and Miller, 1985;Sheng et al, 1995;Zhou et al, 2018), models based on segregation potential (Gilpin, 1980;Koren et al, 1999;Ji et al, 2019), and pre-melting dynamic models (Wettlaufer et al, 1996;Rempel et al, 2004;Michalowski and Zhu, 2006;Zhou and Wei, 2020). These models differ in practical applications due to different theoretical assumptions and bases.…”

Section: Laboratory Studies and Simulations Of Segregated Icementioning

confidence: 99%

Water Migration and Segregated Ice Formation in Frozen Ground: Current Advances and Future Perspectives

Qingbai

Zhang

et al. 2022

Front. Earth Sci.

View full text Add to dashboard Cite

A characteristic of frozen ground is a tendency to form banded sequences of particle-free ice lenses separated by layers of ice-infiltrated soil, which produce frost heave. In permafrost, the deformation of the ground surface caused by segregated ice harms engineering facilities and has considerable influences on regional hydrology, ecology, and climate changes. For predicting the impacts of permafrost degradation under global warming and segregated ice transformation on engineering and environmental, establishing appropriate mathematical models to describe water migration and ice behavior in frozen soil is necessary. This requires an essential understanding of water migration and segregated ice formation in frozen ground. This article reviewed mechanisms of water migration and ice formation in frozen soils and their model construction and introduced the effects of segregated ice on the permafrost environment included landforms, regional hydrological patterns, and ecosystems. Currently, the soil water potential has been widely accepted to characterize the energy state of liquid water, to further study the direction and water flux of water moisture migration. Models aimed to describe the dynamics of ice formation have successfully predicted the macroscopic processes of segregated ice, such as the rigid ice model and segregation potential model, which has been widely used and further developed. However, some difficulties to describe their theoretical basis of microscope physics still need further study. Besides, how to describe the ice lens in the landscape models is another interesting challenge that helps to understand the interaction between soil ice segregation and the permafrost environment. In the final of this review, some concerns overlooked by current research have been summarized which should be the central focus in future study.

show abstract

Section: Laboratory Studies and Simulations Of Segregated Icementioning

confidence: 99%

Water Migration and Segregated Ice Formation in Frozen Ground: Current Advances and Future Perspectives

Qingbai

Zhang

et al. 2022

Front. Earth Sci.

View full text Add to dashboard Cite

show abstract

“…Observation of changes in soil properties and building materials caused by frost is the subject of research activities in several countries, especially the Nordic countries. Research activities are focused mainly on frost heaves (Long et al, 2018;Wang et al, 2014;Zhou et al, 2018), water freezing in porous materials (Kou et al, 2018;Lu et al, 2019;Zhang & Liu, 2018;Bąk & Chmielewski, 2019), thermal-technical parameters of soils and building materials (He et al, 2017;Kömle et al, 2007Kömle et al, , 2010Gnip et al, 2001). Significant results of Canadian research (Fredlund, 2019;Pentland, 2000;Soliman et al, 2008;Tam, 2009) led to the development of the SoilVision software (Fredlund, 2011) which addresses various problematic processes occurring in soils.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modelling of Thermal Regime of Railway Track - Structure With Thermal Insulation (Styrodur)

Ižvolt

Dobeš

Holešová

et al. 2021

Journal of Civil Engineering and Management

View full text Add to dashboard Cite

This paper presents the results of numerical modelling of the influence of various factors (geometrical layout of the structural layers of the railway track, climatic factors and ballast fouling) on the freezing of railway track structure with a built-in thermal insulation layer of extruded polystyrene (Styrodur). At the same time, the suitability and expediency of incorporating the thermal insulation layer at the sub-ballast upper surface level (i.e. below the rail ballast construction layer), or at the level of subgrade surface are discussed. Numerical modelling results in the main factors that should be taken into account in the dimensioning of the sub-ballast layers with a built-in thermal insulation layer. Based on the data on the depth of freezing of the railway track structure obtained from numerical modelling, a design nomogram for dimensioning was created and subsequently the influence of the changes of climatic characteristics on the freezing of the railway track structure was then mathematically expressed.

show abstract

“…With ice growth, the segregated ice will be generated in a particular mode 8,42,43 . Water that continuously transfers to the frozen fringe and thus forms ice causes soil heave.…”

Section: Discussionmentioning

confidence: 99%

Study on ice nucleation temperature and water freezing in saline soils

Wan

Liu

Qiu

2020

Permafrost & Periglacial

View full text Add to dashboard Cite

This paper presents a computational model of the freezing point of soil and the nucleation rate of ice based on the soil volume for saline soils. Physicochemical methods and crystallization theory are used to explore the macroscopic mechanism of water freezing induced by ice crystallization, and the influence of water undercooling is discussed with regard to different soil volumes and salt contents. Growth sites, shapes, and sizes of ice crystals are determined by an assumption of heterogeneous nucleation, and the contact angle is introduced to represent a wide range of soils. The relationship between the initial contact angle and the salt content is analyzed quantitatively through an indoor cooling test and thermal difference analysis. Moreover, the van Genuchten model is applied to provide an equation for the unfrozen water content in salty soils, and the probability of ice formation is introduced to investigate the variation of contact angle during the soil freezing process. This study shows that the initial radius of an ice crystal decreases as the salt concentration decreases. The temperature of ice nucleation is determined mainly by the contact angle of ice crystals, which decreases as the soil volume increases and results in decreased supercooling.

show abstract

Separate-ice frost heave model for one-dimensional soil freezing process

Cited by 48 publications

References 25 publications

Water Migration and Segregated Ice Formation in Frozen Ground: Current Advances and Future Perspectives

Water Migration and Segregated Ice Formation in Frozen Ground: Current Advances and Future Perspectives

Numerical Modelling of Thermal Regime of Railway Track - Structure With Thermal Insulation (Styrodur)

Study on ice nucleation temperature and water freezing in saline soils

Contact Info

Product

Resources

About