Electrochemical Corrosion Behaviour of X70 Steel under the Action of Capillary Water in Saline Soils DOI Open Access

Jianjian Wei,

Bin He,

Yongxiang Feng

и другие.

Materials, Год журнала: 2022, Номер 15(10), С. 3426 - 3426

Опубликована: Май 10, 2022

In this paper, the electrochemical corrosion behavior of X70 steel in saline soil under capillary water was simulated by a Geo-experts one-dimensional column instrument. A volumetric content sensor and conductivity test were used to study migration mechanism salt (sodium chloride) water. The system analyzed testing as well macroscopic microscopic morphology steel. results showed that significantly influenced rise particular, wetting front during meant located at three-phase solid/liquid/gas interface certain location, which worsened its behavior. addition, after stabilized, salts transported with top column. This resulted highest environment most severe location.

Язык: Английский

Recent Advances in Dielectric Properties-Based Soil Water Content Measurements DOI Creative Commons
Mukhtar Iderawumi Abdulraheem, Hongjun Chen, Linze Li

и другие.

Remote Sensing, Год журнала: 2024, Номер 16(8), С. 1328 - 1328

Опубликована: Апрель 10, 2024

Dielectric properties are crucial in understanding the behavior of water within soil, particularly soil content (SWC), as they measure a material’s ability to store an electric charge and influenced by other minerals soil. However, comprehensive review paper is needed that synthesizes latest developments this field, identifies key challenges limitations, outlines future research directions. In addition, various factors, such salinity, temperature, texture, probing space, installation gap, density, clay content, sampling volume, environmental influence measurement dielectric permittivity Therefore, aims address gap critically analyzing current state-of-the-art properties-based methods for SWC measurements. The motivation increasing importance precise data applications agriculture, monitoring, hydrological studies. We examine time domain reflectometry (TDR), frequency (FDR), ground-penetrating radar (GPR), remote sensing (RS), capacitance, which accurate cost-effective, enabling real-time resource management health through measuring travel electromagnetic waves reflection coefficient these waves. can be estimated using approaches, TDR, FDR, GPR, microwave-based techniques. These made possible loss factor with SWC. available further synthesized on basis mathematical models relating apparent providing updated their development, applications, monitoring. It also analyzes recent calibration models, algorithms, challenges, trends estimating By consolidating advances highlighting remaining article guide researchers practitioners toward more effective strategies

Язык: Английский

Процитировано

20

Micro-macroscopic mechanical behavior of frozen sand based on a large-scale direct shear test DOI
Dan Chang, Yihui Yan, Jiankun Liu

и другие.

Computers and Geotechnics, Год журнала: 2023, Номер 159, С. 105484 - 105484

Опубликована: Апрель 27, 2023

Язык: Английский

Процитировано

29

Investigation on the microstructural characteristics of lime-stabilized soil after freeze–thaw cycles DOI
Jiyun Nan, Dan Chang, Jiankun Liu

и другие.

Transportation Geotechnics, Год журнала: 2023, Номер 44, С. 101175 - 101175

Опубликована: Дек. 9, 2023

Язык: Английский

Процитировано

19

Changing of mechanical property and bearing capacity of strongly chlorine saline soil under freeze-thaw cycles DOI Creative Commons
Shijun Ding, Shaomin Li,

Sen Kong

и другие.

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Март 14, 2024

Abstract Freeze-thaw cycles and compactness are two critical factors that significantly affect the engineering properties safety of building foundations, especially in seasonally frozen regions. This paper investigated effects freeze-thaw on shear strength naturally strongly chlorine saline soil with 85%, 90% 95%. Three samples different were made. Size mass changes measured recorded during cycles. Shear under vertical pressures was determined by direct tests, cohesion friction angle discussed. Microstructure characteristic observed using scanning electron microscopy Furthermore, numerical software used to calculate subsoil-bearing capacity settlement electric tower foundation Qarhan Salt Lake region Results show low-density shows thaw deformation, but high-density frost-heaving deformation increase The first increases then decreases After 30 cycles, is 28.3%, 29.2% 29.6% lower than without cycle, 71.4%, 60.1% 54.4% close each other. Microstructural indicate cycle leads breakage coarse particles aggregation fine particles. Correspondingly, structure type from a granular stacked cemented-aggregated system. Besides, quality loss at about 2% suggest there may be an optimal between 90 95%, premise meeting design requirements economic benefits. study can provide theoretical guidance for constructions

Язык: Английский

Процитировано

8

Analysis of moisture migration, temperature, and pore structure characteristics of the muddy clay column subject to artificial ground freezing based on LF NMR DOI
Jie Zhou, Huade Zhou,

Chuanhe Wang

и другие.

Tunnelling and Underground Space Technology, Год журнала: 2022, Номер 133, С. 104948 - 104948

Опубликована: Дек. 29, 2022

Язык: Английский

Процитировано

23

Mechanical behavior and strength criterion of frozen silty clay under complex stress paths DOI Creative Commons
Baoxuan Wang, Xiangtian Xu, Xiaoshan Wang

и другие.

Geoderma, Год журнала: 2023, Номер 435, С. 116506 - 116506

Опубликована: Май 13, 2023

Frozen soil masses under various geologic conditions are usually in complex stress states and may carry loads with different paths. Thus, a comprehensive understanding of the mechanical behaviors frozen paths is crucial to guide engineering develop mechanics. In this work, triaxial compressive tests 32 were conducted on silty clay, taking both global local strain measurements. The test composed nine initial confining pressures 14 increment direction angles, whose influences behavior investigated. coupling effects between them strength deformation characteristics revealed: lower pressure was, stronger angle were, larger were. This indicated that influence path stress–strain response might depend change density during loading: denser specimen less anisotropic it was. uniqueness directions for certain state reached through was found, when assuming rate coincided stress. An asymmetric failure function meridian plane proposed, then three-dimensional criterion constructed by combining deviatoric-plane unified criterion. validity proposed examined using stress-path results three types geomaterials literature.

Язык: Английский

Процитировано

17

Influence of intermediate principal stress ratio on strength and deformation characteristics of frozen sandy soil under different moisture contents DOI
Kun Huang,

Qinyong Ma,

Guojun Cai

и другие.

Cold Regions Science and Technology, Год журнала: 2023, Номер 213, С. 103909 - 103909

Опубликована: Май 30, 2023

Язык: Английский

Процитировано

13

Heat transfer and cold energy capacity properties of crushed-rock layer in cold sandy regions DOI
Fenglei Han, Wenbing Yu,

Lianxia Ma

и другие.

International Journal of Thermal Sciences, Год журнала: 2023, Номер 189, С. 108286 - 108286

Опубликована: Март 16, 2023

Язык: Английский

Процитировано

12

Whether mixed using polypropylene fiber and air-entraining agent can further improve the macro and micro durability of concrete in cold and sulfate regions DOI

Jingge Ren,

Yuanming Lai, Jing Zhang

и другие.

Cold Regions Science and Technology, Год журнала: 2023, Номер 212, С. 103891 - 103891

Опубликована: Май 18, 2023

Язык: Английский

Процитировано

11

Research on hydro-thermal coupling model of canal foundation soil based on particle grading curve predicting soil-water characteristic curve DOI Creative Commons

Mingwei Hai,

Miao Wang, Shangjiu Meng

и другие.

Case Studies in Thermal Engineering, Год журнала: 2024, Номер 56, С. 104270 - 104270

Опубликована: Март 24, 2024

Hydro-thermal coupling is the essence of freeze-thaw process, and theoretical studies this coupled process have been hot topics in field frozen soil. Darcy's law unsaturated soil water flow, heat conduction theory, relative saturation solid-liquid ratio are based on paper. According to principle that cumulative curve particle gradation canal foundation similar soil-water properties. A characteristic derived using curve. VG model then used fit curves obtain soil's hydraulic parameters, established hydro-thermal modified reflect evolution more objectively. closed system one-way freezing test method verify feasibility proposed part. The results show optimal parameters subsoil a = 0.06, n 1.2, m 0.17, temperature fields obtained from simulation good agreement with measured data, showing utility predicting parameters. Analysis multi-field interaction mechanism dynamic during thawing. This has great importance for preventing damage canals protecting agricultural safety.

Язык: Английский

Процитировано

4