Experimental and numerical investigation of the effect of soil type and fineness on soil frost heave behavior

She, Wei; Cao, Xiaoyu; Zhao, Guotang; Cai, Degou; Jiang, Jiuchuan; Hu, Xiangyu

doi:10.1016/j.coldregions.2018.01.015

Cited by 30 publications

(7 citation statements)

References 15 publications

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“…Some studies performed frost tests on subgrade soils (sand with silt) [25,27,30]. Wan et al [29] analyzed the frost-heaving behavior of the clayey silt area in northeastern China (silt with clay), while others focused on that of clayey soils, including kaolinite and montmorillonite (clay with silt) [17,28,32,33].…”

Section: Level Of Frost Heaving In Different Soil Types According To ...mentioning

confidence: 99%

Frost Heaving and Induced Pressure of Unsaturated Interfacial Zone between Gravel Ballast and Subgrade

2022

Applied Sciences

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Most existing railroads are composed of gravel ballast. One of the major issues with gravel ballast is frost damage in cold regions. Gravelly soils are known to be not prone to frost action due to their low water retention capacity and high hydraulic conductivity. However, reports indicated continued frost damages resulting from the mixed zone between gravel ballast and subgrade. This study evaluated the frost heaving and induced pressure of gravel ballast–subgrade soil mixtures via 1D soil column testing in a cold chamber. Gravel ballast and subgrade soil were collected from the railroad in situ. Various mixing ratios and degrees of saturation were used as factors affecting the frost experiments. The mixtures were placed in the cold chamber, and vertical displacements and pressures were measured. Overall evaluations showed that gravelly soils are not a geomaterial prone to frost damage; however, the frost potential of gravel ballast increases as the degree of saturation and the mixing portion of the subgrade soil increase. Therefore, the interfacial zone between gravel ballast and subgrade soil, especially where possible mixing with low drainage exists, needs cautions of potential frost damage.

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Section: Level Of Frost Heaving In Different Soil Types According To ...mentioning

confidence: 99%

Frost Heaving and Induced Pressure of Unsaturated Interfacial Zone between Gravel Ballast and Subgrade

2022

Applied Sciences

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“…For clarifying the aggregation of nZVI in the waterish condition, the optical microscopic analysis was conducted. This is one of the qualitative methods for studying the arrangements of micro-structures in the soil (She et al 2018). Although the SEM technology has been a common method for the morphological analysis.…”

Section: Optical Microscopic Analysismentioning

confidence: 99%

Microstructure and morphological characterization of lead-contaminated clay with nanoscale zero-valent iron (nZVI) treatment

Chen

Zhou

Liu

et al. 2019

Engineering Geology

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“…2 Low level, high level: Small value of the factor, big value of the factor. 3 Code values: Low (high) level of the factor will be represented by −1 (1) in Design-Expert 10. Unsaturated soil was placed in an experimental tube with an inner diameter of 5 cm and a height of 10 cm; the soil column height was 8 cm.…”

Section: Improved Frost Heave Experimentsmentioning

confidence: 99%

“…During this process, soil water, vapor, and heat move from warm to cold locations, driven by a complicated process involving the temperature gradient and soil water potential. At the same time, discontinuous ice lens growth in the unsaturated soil causes frost-heaving [3][4][5], leading to soil body expansion and uneven uplift of the ground surface [6]. This process can cause serious damage to above-ground and underground infrastructure, resulting in serious economic losses [1,7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Frost heaving is affected by many factors, including soil characteristics and external environmental factors. For example, the proportion of fine-grained (clay and slit) content in soil has a significant effect: lower levels are correlated with less frost heaving [3,10]. The amount of water content also directly affects frost heaving, while highly saline soils will produce salt expansion at low temperatures [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

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Prediction of Seasonal Frost Heave Behavior in Unsaturated Soil in Northeastern China Using Interactive Factor Analysis with Split-Plot Experiments and GRNN

Wan

Bian

et al. 2019

Water

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Few studies of frost heave mechanisms have considered multifactor interactions, particularly in unsaturated saline soils typical of northeastern China. We collected soil samples in western Jijin Province and assessed their potential frost heave behavior with reference to four controllable factors: soluble salt content (CSS), compactness (C), temperature (T), and water content (WC) using a two-level split-plot experiment. The resulting frost heave ratio was between −0.6% and 2.1%. Analysis of variance showed that water content, compactness, and temperature had significant effects on frost heave behavior, with water content having the strongest correlation (factor coefficient of 0.82), while content of soluble salt (CSS) had no significant effect. The interaction factors (products of single factors) CSS × WC and C × WC had significant effects on frost heave behavior. A correlation analysis using these interaction factors with experimental data drawn from previous research showed results consistent with the improved frost heave experiment as the significant effects of single factors on frost heave behavior ranked from WC > C > T and the interaction factors CSS × WC and C × WC gain had significant effects. We then established two generalized regression neural network (GRNN) models based on the single and interaction factors in order to predict frost heave behavior, showing that adding the latter to the input dataset improved the model accuracy. Thus, future research on predicting frost heave behavior in unsaturated saline soils should consider multiple interacting factor for greater accuracy.

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Experimental and numerical investigation of the effect of soil type and fineness on soil frost heave behavior

Cited by 30 publications

References 15 publications

Frost Heaving and Induced Pressure of Unsaturated Interfacial Zone between Gravel Ballast and Subgrade

Frost Heaving and Induced Pressure of Unsaturated Interfacial Zone between Gravel Ballast and Subgrade

Microstructure and morphological characterization of lead-contaminated clay with nanoscale zero-valent iron (nZVI) treatment

Prediction of Seasonal Frost Heave Behavior in Unsaturated Soil in Northeastern China Using Interactive Factor Analysis with Split-Plot Experiments and GRNN

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