Article
Chemistry, Multidisciplinary
Pu Qiu, Peitao Li, Jun Hu, Yong Liu
Summary: This study explores the impact of seepage on the formation of frozen wall using a coupled hydro-thermal numerical model, considering the spatial variation of soil thermal conductivity. The results show that groundwater flow adversely affects the formation of the frozen wall, requiring additional freezing time. Through random finite element analysis, two levels of additional freezing time are provided to assist practitioners in making rule-of-thumb estimations in design practice.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Environmental
Jianpeng Liu, Ping Yang, Jiahui Wang, Shengfu Wang, Hongwei Jiang
Summary: Frozen wall thickness (FWT) is an important index in artificial ground freezing (AGF) projects. In this study, open-system unidirectional freezing tests were conducted on silty clay with different chloride salt contents to investigate the effect of salt content. The freezing front evolution was modeled and the results were validated with measurements. A novel method using in-situ electrical conductivity measurements was proposed to improve the accuracy of estimating frozen wall evolution.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Geological
Yong Liu, Kai-Qi Li, Dian-Qing Li, Xiao-Song Tang, Shi-Xiang Gu
Summary: In this study, a unit cell model of freeze pipes was established to examine the effects of uncertainties such as groundwater seepage, freeze pipe inclination, and spatial variability in thermal conductivity on the AGF system. Results show that considering these uncertainties can help evaluate the additional freezing time required and provide reasonable freeze pipe spacing and critical seepage velocity.
Article
Materials Science, Characterization & Testing
Ren-Chung Huang, Po-Kai Wu, Muhsiung Chang
Summary: The study found that the development of frozen soils is significantly affected by the Z-values of the boundary insulation system, with a Z-value of at least 2.27 m(2) K/W necessary for stable frozen soil development.
JOURNAL OF TESTING AND EVALUATION
(2021)
Article
Engineering, Environmental
Ming Li, Qinguo Ma, Xiaoxiao Luo, Haiqiang Jiang, Yongdong Li
Summary: The artificial freezing ground method is widely used in geotechnical engineering, with significant influences of water migration and ice-water phase transition on temperature distribution, and the progression of frozen wall is affected by the arrangement of freezing pipes.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2021)
Article
Energy & Fuels
Alireza Kazemi, Mohammad Roostaie, Igor Egorov, Yuri Leonenko
Summary: Closed thermosyphons can naturally freeze the ground without external energy. Changing the depth, length, and diameter of the pipes can affect the freezing time and storage capacity.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Environmental
Zhen-Dong Cui, Long-Ji Zhang, Chong Xu
Summary: With the development of urban underground space, the depth of underground structures is increasing. Shanghai, being a typical soft soil area, has a complex geological environment and abundant groundwater. This study conducted numerical simulations to analyze the distribution of freezing temperature fields and frost heave deformation for a deep foundation pit constructed using the pile freezing method. The freezing temperature field distribution in single freezing holes, double freezing holes, and single row holes was analyzed, and the temperature fields of straight and corner sections after excavation were also studied. The impact of piles on the distribution of freezing temperature fields and ground frost heave deformation was compared. The research results provide a design basis and reference for the construction of deep foundation pits using artificial ground freezing.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2023)
Article
Construction & Building Technology
Brahim Mazhoud, Florence Collet, Sylvie Pretot, Christophe Lanos
Summary: This study experimentally investigates the effects of clay stabilization and hemp content on hygric and thermal performances of composites. It reveals that the designed composites exhibit excellent moisture buffering properties and thermal conductivity suitable for distributed insulation. The linear relationships between hemp content, binder types, density, and water content are identified in this study.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Energy & Fuels
Zelin Liu, Chunde Ma, Xin'ao Wei
Summary: The deformation damage of soft rocks and the influence of temperature and moisture content on the mechanical properties of rocks have been widely studied. In this research, triaxial extension tests were performed on sandstone specimens with different heating temperatures and moisture contents. The results showed that the mass of the specimens decreased with temperature increase, the elastic modulus decreased, and the axial ultimate strain exhibited a distinctive pattern. P-wave velocity and axial stress initially increased and then decreased around 200 degrees C. Microcracks became more intense after 200 degrees C. The mineral compositions in the specimens also changed, contributing to the deterioration. Moisture content affected the triaxial extension strength, but the effect was minimal after 500 degrees C and 20% moisture content.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2023)
Article
Chemistry, Multidisciplinary
Jun Hu, Ke Li, Yuwei Wu, Dongling Zeng, Zhixin Wang
Summary: The present study evaluated the influence of different brine cooling schemes on the freezing process in the formation of sand-cobble strata in an underground connection aisle in Hohhot, China. It was found that lowering the freezing start temperature can accelerate the freezing process, and a brine cooling plan is proposed as a reference for future construction.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Civil
Feicong Zhou, Ping Zhou, Jinyi Li, Tiancheng Ge, Jiayong Lin, Zhijie Wang
Summary: The Artificial Ground Freezing Method (AGF) is an efficient and environmentally friendly reinforcement method for constructing metro connecting passages in water-rich and weak strata. This study establishes a quantitative relationship between the freezing temperature and frozen wall thickness, and proposes a design method for frozen wall thickness considering the freezing temperature. Experimental and theoretical analyses show that the compressive and shear strengths of frozen soil increase linearly with decreasing freezing temperature.
KSCE JOURNAL OF CIVIL ENGINEERING
(2022)
Article
Materials Science, Paper & Wood
Hamiyet Sahin Kol, Kubra Gunduz Vaydogan
Summary: The study investigated the temperature dependence and relative humidity dependence of the thermal conductivity of heat-treated pine and beech wood commonly used in building construction. The thermal conductivity of the heat-treated wood decreased with increasing temperature and relative humidity. However, the thermal conductivity became more stable after heat treatment under relative humidity changes. The temperature dependence of the heat-treated wood was not affected by the relative humidity changes. Therefore, heat-treated wood with low humidity variation can be preferred for building construction.
Article
Engineering, Geological
Diego Sancho Calderon, Santiago Ortiz Palacio, Sergio Jorge Ibanez Garcia, Sven Bock
Summary: Artificial ground freezing is a reliable method for excavation in water-bearing ground, but the thermal design of ground freezing projects presents challenges in solving moving boundary problems. Analytical solutions, such as those by Ständer and Sanger & Sayles, have been used in thermal engineering design but lack accuracy. This paper proposes an adjustment to Sanger & Sayles' formula based on re-evaluating their empirical assumption, achieving significantly improved accuracy for different conditions in the engineering design of ground freezing.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2023)
Article
Engineering, Environmental
Yugui Yang, Dawei Lei, Yong Chen, Chengzheng Cai, Shanshan Hou
Summary: The research on the thermal-hydro-mechanical coupling theory is important for exploring the freezing mechanism of deep shaft. In this study, a thermal-hydro-mechanical formulation is established to simulate the freezing process of soil. The reasonability of the coupling model is verified by comparing the calculated results with model and field tests. The study reveals that moisture migration during the freezing process can be represented by the combination of matrix and fracture permeability.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2022)
Article
Construction & Building Technology
Xin Liu, Hossein Nowamooz, Yupeng Shen, Yue Liu, Yunxi Han, Yuke An
Summary: In this study, a physical model test was conducted to investigate the freezing process under seepage conditions during subway cross passage construction. A hydro-thermal coupling model was derived to consider the variations of physical and thermodynamic parameters, and the numerical approach was validated by experimental results. The results showed that seepage velocity had the greatest effect on the thickness and shape of frozen body, while seepage temperature had the least impact.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2023)
Article
Computer Science, Interdisciplinary Applications
Huimei Zhang, Chao Yuan, Gengshe Yang, Luyuan Wu, Chuan Peng, Wanjun Ye, Yanjun Shen, Hossein Moayedi
Summary: In this study, a computational model was developed to analyze rock deformation and failure characteristics under freeze-thaw cycles and loading, considering the impact of confining pressure and material defects. The model successfully reflects the internal mechanism of freeze-thaw damage and selected physical variables, demonstrating adaptability. The model also predicts an evolution curve of total damage, showing the closure, initiation, propagation and coalescence of internal microcracks, as well as rock failure mechanisms.
ENGINEERING WITH COMPUTERS
(2021)
Article
Biochemistry & Molecular Biology
Tao Luo, Chi Zhang, Xiangtian Xu, Yanjun Shen, Hailiang Jia, Chaowei Sun
Article
Engineering, Geological
Shuguang Li, Yingming Wu, Runke Huo, Zhanping Song, Yoshiaki Fujii, Yanjun Shen
Summary: Long-term exposure to chemical solutions can significantly impact the physical and mechanical properties of rocks. Uniaxial compression tests on acid-immersed sandstone specimens showed that the samples became weaker and exhibited more ductile failure behavior after immersion in hydrochloric or sulfuric acids.
ROCK MECHANICS AND ROCK ENGINEERING
(2021)
Article
Engineering, Geological
Jinyuan Zhang, Yanjun Shen, Gengshe Yang, Huan Zhang, Yongzhi Wang, Xin Hou, Qiang Sun, Guoyu Li
Summary: The changes in UCS and P-wave velocity of sandstone with temperature rise show various trends, mainly influenced by factors such as microstructure variation, quartz content, transformation plasticity of clay minerals, etc.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2021)
Article
Thermodynamics
Yanjun Shen, Xu Wang, Yongzhi Wang, Keping Zhou, Jinyuan Zhang, Huan Zhang, Jielin Li
Summary: The study evaluated the TC models for sandstone and proposed a new TRC model based on pore connectivity to improve accuracy. Measurement and analysis of TC values in different porous media were conducted to compare model applicability. The geometric mean model was found to be more accurate than others, and the TRC model showed consistent results for all states.
HEAT AND MASS TRANSFER
(2021)
Article
Energy & Fuels
Yanjun Shen, Jiangqiang Yuan, Xin Hou, Jianshuai Hao, Zhipeng Bai, Ting Li
Summary: This study investigates the effect of cooling shocks on high-temperature granite by inducing cooling shocks with different temperature refrigerants. The results show that the refrigerant temperature has a significant impact on the strength and failure modes of the granite, providing practical experience and references for geothermal development.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2021)
Article
Engineering, Environmental
Yan-jun Shen, Jian-shuai Hao, Xin Hou, Jiang-qiang Yuan, Zhi-peng Bai
Summary: This study investigated crack propagation in high-temperature granite subjected to different cooling shocks. Results showed a critical temperature range of 350-550 degrees C for sudden changes in crack macroscopic shape, with cooling shocks significantly enhancing thermal damage.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)
Article
Metallurgy & Metallurgical Engineering
Jie-lin Li, Long-yin Zhu, Ke-ping Zhou, Hui Chen, Le Gao, Yun Lin, Yan-jun Shen
Summary: The study defines rock freeze-thaw and creep damage factors based on nuclear magnetic resonance porosity and volume strain, and establishes non-linear creep damage constitutive model and freeze-thaw rock equation. The continuous damage caused by freeze-thaw cycles weakens the rock viscoplasticity and reduces the long-term strength.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Construction & Building Technology
Shuai Liu, Gengshe Yang, Xihao Dong, Yanjun Shen, Hui Liu
Summary: Through low-temperature and high-pressure rock triaxial tests, the strength, deformation, and failure modes of frozen sandstone were studied, revealing the characteristics of frozen sandstone under different conditions and providing important data for safety evaluation of frozen shaft construction.
ADVANCES IN CIVIL ENGINEERING
(2021)
Article
Construction & Building Technology
Zihan Zhou, Yanjun Shen, Huan Zhang, Yongzhi Wang, Hongwei Yang, Jia Pan, Xin Wei
Summary: The study focused on the fracture debonding law and fracture criterion for rock-concrete binary composite interfaces under freeze-thaw (F-T) actions, using sandstone-concrete binary composite materials as the research object. It was found that the interface influence zone (IIZ) lies in the sandstone near the interface, and the interface crack tends to initiate and propagate mainly along the interface under F-T cycles. The study also discussed the initiation law and influencing factors of interface cracks under F-T actions.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Environmental
Jia Pan, Yanjun Shen, Gengshe Yang, Huan Zhang, Hongwei Yang, Zihan Zhou
Summary: The study reveals that the transition zone in tunnel shotcrete is susceptible to freeze-thaw deterioration, which can lead to tunnel support failure. As the number of freeze-thaw cycles increases, the elastic modulus and hardness values of the transition zone decrease, while the thickness increases. The volume fraction of micropores shows a positive correlation with the number of cycles, while the volume fractions of low-density calcium-silicate-hydrate gel exhibit negative correlations.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Sisi Tian, Yanjun Shen, Shuguang Li, Wen Ma, You Lv, Xueting Li
Summary: Splitting tensile real time acoustic emission tests were conducted on rock-shotcrete binary specimens under the influence of different corrosive waters. The study focused on the damage process of the binary interface caused by corrosion from a mesoscopic perspective. The results showed that corrosion altered the physical and chemical properties of the binary specimens, resulting in a decrease in tensile strength. The impact of acid solution corrosion was found to be particularly strong throughout the entire corrosion cycle. The acoustic emission signals were observed to reflect the propagation and inoculation process of interface microcracks. Moreover, the peak values of various parameters decreased with an increase in the degree of corrosion in different corrosive environments. The synchronized changes in numerical values can provide early warning information. The application of acoustic emission B value revealed that the failure mode of the binary body interface shifted from large internal crack failure to continuous small crack failure as corrosion intensified. The damage model established based on acoustic emission cumulative ringing count effectively characterized the coupling relationship between corrosion, load, and damage of the binary.
Article
Green & Sustainable Science & Technology
Shuguang Li, Yanjun Shen, Jianhua Dong, Wen Ma, You Lv, Shaoqiang Ren, Jiangsheng Xie, Shengli Ji, Jianping Xu, Xingli Wang
Summary: This paper summarizes and categorizes freezing damage phenomena in tunnels in cold regions, and determines the influence weight and ranking of each factor through qualitative evaluation and analytic hierarchy process, providing guidance for selecting appropriate anti-freezing measures.
Article
Engineering, Civil
Yongzhi Wang, Mengbo Liu, Shaoming Liao, Qiong Yi, Junzuo He, Linqi Liu, Zhiqun Gong, Kaiying Li
Summary: The press-in open caisson method is an important construction method in extremely soft foundations. However, problems such as sinking and large deformation are prone to occur in the construction of caissons. This study focused on the stratigraphic response model of soil migration during the press-in process of open caisson. Model tests were conducted to investigate the migration patterns of each part of the soil and the underlying mechanism of the stratigraphic response pattern. The study provides new understanding and guidance for the construction of press-in open caissons.
KSCE JOURNAL OF CIVIL ENGINEERING
(2023)
Article
Geography, Physical
YanJun Shen, Huan Zhang, JinYuan Zhang, HongWei Yang, Xu Wang, Jia Pan
Summary: The study clarifies the microdamage evolution law of the ITZ under increasing freeze-thaw cycles and establishes the relationship between the number of cracks in the ITZ and freeze-thaw cycles. The micromechanical strength of the ITZ decreases and its development width tends to increase as the number of freeze-thaw cycles increases. The damage and debonding evolution mechanisms of the sandstone-concrete ITZ under freeze-thaw cycles are revealed, and a micromechanical evolution model induced by freeze-thaw cycles is proposed.
SCIENCES IN COLD AND ARID REGIONS
(2021)
Article
Engineering, Environmental
Mikael Schlumpf, Jordy Hendrikx, John Stormont, Ryan Webb
Summary: The formation of wet-snow slab avalanches is related to the liquid water content and strength of the snow layers. However, current studies disagree on this relationship and there is limited understanding of snow layers with a saturation level of θ=7% and above.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
William R. Jacobson
Summary: This study investigates the kinematics of deformation in debris bands associated with an overdeepened basin in Iceland. The research reveals the presence of multiple fabric types, suggesting a complex deformation history. Furthermore, pure shear-dominated strain was observed in an ice-free sediment ridge on the glacier surface.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Shanpeng Cao, Caichu Xia, Shuwei Zhou, Yao Zhang
Summary: Precise evaluation of frost heaving force and surrounding rock plastic zone is crucial for preventing freezing damage in cold-region tunnels. This paper presents a new elastoplastic solution for tunnel frost heaving force considering double non-uniform frost heave and intermediate principal stress, which can better guide the frost resistance design of tunnels in cold regions.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Sina Niazi, Aimane Najmeddine, Maryam Shakiba
Summary: This study investigates the mechanical response and damage of asphalt concrete under freezing temperatures. A coupled thermo-hydro-mechanical constitutive framework is proposed and validated through simulations and experiments. The effects of microstructural constituents on the mechanical response are also studied through parametric analysis.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Shi-chun Cai, Xiao-hua Yang, Fei Ye
Summary: A calculation method based on the Winkler foundation model is proposed for analyzing the stress and deformation in excavation support structures in seasonally frozen soil regions. The method considers various factors and has been validated to exhibit good applicability.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Guanjun Wei, Chuanjin Lei, Maoning Gao, Hongyu Zhou, Xin Li, Chaoyue Zhang
Summary: This study introduces a novel approach to improve the accuracy of deformation prediction in frozen soil areas by integrating post-processing deformation from InSAR with a frost heave model using the EnKF assimilation algorithm. Experimental results show that this approach reduces the RMSE to 0.247 mm, indicating its high feasibility and practicality.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Cheng Xu, Yugui Yang, Shanshan Hou, Hui Zhang, Chenxiang Li
Summary: This study investigates the properties and characteristics of frozen loess through nuclear magnetic resonance (NMR) tests and flexural tests. The results show that as the temperature decreases, the pore ice content in frozen loess rapidly increases, making the phase transition of residual unfrozen water difficult. The flexural strength, toughness, and roughness of the fracture surface of frozen loess vary under different freezing temperatures and water content conditions.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Jianguo Lu, Wansheng Pei, Mingyi Zhang, Xusheng Wan, Jiacheng Zhang, Yindong Wang
Summary: This paper investigates the effects of freeze-thaw cycles and salt erosion on the mechanical and microstructural properties of concrete modified with nano-TiO2 and nano-SiO2. The results show that the added nanoparticles and environment media significantly influence the overall performance of concrete samples. The SCF has the greatest influence on degradation, and the compressive strength of NS-modified concrete is lower than that of NT-modified concrete. The optimal nanoparticles ratios for NS and NT modified concretes are 1% and 2%, respectively. Furthermore, NS modification leads to better filling effect on pore structure and larger crystals on the concrete surface compared to NT modification. In the first 90 freeze-thaw cycles, the gel micro-pores increase while the macro-pores decrease, but this trend reverses within the 90-150 cycles. This research provides important insights into the erosion and frost resistance of nano-concretes in marine and cold region engineering.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Florian McLelland, Floris van Breugel
Summary: In this study, a proof-of-concept approach for automatically assessing qualitative aspects of snow type while skiing using strain sensors is explored. The algorithm developed achieves a 97% accuracy in correctly assigning qualitative labels to different segments of a skiing trajectory. This method has the potential for improving quantitative characterization of ski performance, providing snow-specific recommendations, and developing skis with automated stiffness tuning based on snow type.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Purushottam Kumar Garg, Aparna Shukla, Mohd. Farooq Azam
Summary: This study remotely investigates 25 well-distributed glaciers in the western Himalaya and finds that these glaciers were in an overall retreating phase from 1990 to 2015. The study also reveals changes in glacier dynamics before and after 2000, including reduced terminus retreat and deglaciation rates, increased surface velocity, and the presence of more glacial lakes and supraglacial debris. The study highlights the importance of topography and local surface conditions in the heterogeneity of glacier response to climate.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Junru Chen, Shuna Feng, Lang Jia, Jiagui Hou, Miles Dyck, Xiaobin Li, Qingbai Wu, Hailong He
Summary: The heat pulse method is commonly used to measure thermal properties of frozen soil, snow, or glaciers, but the phase change caused by ice melting affects the measurement accuracy. This study observed the thermal response of ice under different heating strategies and compared numerical simulations and analytical solutions. The results showed that optimizing phase change parameters improved accuracy and the numerical method effectively improved the calculation accuracy of ice thermal conductivity.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Kazuma Fukui, Chiemi Iba
Summary: By studying the evolution of pore water pressure in brick walls during cyclic freezing and thawing, we found that the water pressure in a south facing wall increases significantly during the night in cold regions. Incomplete freeze-thaw cycles are more damaging to building materials than a monotonous repetition of complete freezing and thawing.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Yasir A. Malik, Norbert Karpen, Elmar Bonaccurso, Ilia Roisman, Jeanette Hussong, Philippe Villedieu
Summary: This study quantitatively analyzes the accretion and shedding phenomena caused by ice crystal icing on heated and non-heated surfaces. Experimental findings show the accretion threshold and shed areas under different parametric conditions. The results not only consolidate previous studies, but also identify new phenomena on unheated surfaces with mixed-phase conditions at negative wet bulb temperatures and positive wet bulb temperatures.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Ezieddin Madi, Kevin Pope, Weimin Huang
Summary: This study experimentally investigates the impact of ice thickness on the energy required for de-icing. It is found that an increase in ice thickness at the heater's edge leads to a significant increase in de-icing duration. The results suggest that employing a correlation between ice thickness at different locations can help reduce the thermal energy needed for ice removal from airfoil or cylindrical surfaces.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
K. Riska, R. Bridges
Summary: Understanding the properties and parameters of ice growth models is crucial for assessing the impact of ice on facilities and ship navigation. This paper investigates the theoretical formulations for ice growth and compares calculated results with measurement data. The study focuses on level sea ice growth models and their application in brash ice consolidation modeling, considering factors such as snow cover, salinity, porosity, and atmospheric boundary including wind effect. The findings contribute to a better understanding of ice growth and consolidation processes, informing modeling techniques for marine design and operations.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
