Article
Construction & Building Technology
W. L. Zhong, G. Wang, Y. Xi, L. F. Fan
Summary: This study investigates the damage evaluation of geopolymers under different freezing temperatures using an ultrasonic technique. The results show that the longitudinal wave velocity, dynamic elastic modulus, and compressive strength of geopolymers decrease as the freezing temperature decreases. The damage difference of geopolymers under different freezing-thawing treatments increases with decreasing freezing temperature, and the A-W treatment method shows the most serious deterioration. The compressive strength damage and longitudinal wave velocity damage exhibit exponential relations, and a nondestructive method based on longitudinal wave velocity can efficiently predict the damage evaluation of geopolymers.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Martina Ahlberg, Sunjae Chung, Sheng Jiang, Andreas Frisk, Maha Khademi, Roman Khymyn, Ahmad A. Awad, Q. Tuan Le, Hamid Mazraati, Majid Mohseni, Markus Weigand, Iuliia Bykova, Felix Gross, Eberhard Goering, Gisela Schutz, Joachim Grafe, Johan Akerman
Summary: Magnetic droplets can be frozen into static nanobubbles by decreasing the applied magnetic field.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Geological
Liu Yang, Hailiang Jia, Li Han, Huimei Zhang, Liyun Tang
Summary: The study found significant hysteresis effects on the ultrasonic parameters and unfrozen water content of sandstone during the freeze-thaw cycle. There are three clear stages of freezing with distinct temperature ranges, and the changes in freezing temperature are inversely related to unfrozen water content and ultrasonic parameters. The ultrasonic parameters of sandstone are significantly correlated with unfrozen water content, with inflection points at specific temperatures during freezing and thawing, which are influenced by pore structure. This information can be used to estimate unfrozen water content and mechanical properties of frozen rock.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2021)
Review
Agriculture, Multidisciplinary
Qiyong Jiang, Zhang Min, Arun S. Mujumdar
Summary: Freezing is an effective technique for extending the storage life of food, but it can also pose challenges to the quality of the food during the freeze-thaw process. Physical field techniques, such as ultrasound, microwave, radio frequency, electric fields, magnetic fields, and high pressure, have been increasingly used to improve the quality of frozen food due to their high efficiency and ease of application. However, the application of these physical fields can also lead to negative phenomena, such as uneven temperature distribution and local overheating, which can damage the product and limit their industrial application.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Chemistry, Applied
Chuhan Bian, Huijie Yu, Kun Yang, Jun Mei, Jing Xie
Summary: This study investigated the effects of multi-frequency UAF on muscle quality and myofibrillar protein structure in large yellow croaker. The results showed that multi-frequency UAF improved freezing rate, reduced lipid oxidation, and maintained myofibrillar structure stability.
Article
Soil Science
Yutian Zuo, Fanxiang Meng, Tianxiao Li, Qiang Fu, Dong Liu, Renjie Hou, Qinglin Li, Mo Li
Summary: The appropriate application of biochar has significant effects on mitigating soil freezing-thawing deformation, enhancing soil aggregate stability, and increasing organic matter content.
Article
Multidisciplinary Sciences
Ke Wang, Liang Tang, Shuang Tian, XianZhang Ling, Yangsheng Ye, Degou Cai, Min Liu
Summary: Through long-term cyclic tests, it was found that freezing-thawing cyclic loading can improve the resilient modulus of FTCFG materials and show a significant rate-dependent characteristics. Three kinetic effects related to deviator stress amplitude, cyclic frequency, and moisture holding capacity were discussed systematically.
SCIENTIFIC REPORTS
(2022)
Article
Geosciences, Multidisciplinary
Jun Bi, Zhijian Wu, Yu Lu, Haiyan Wen, Yingmin Zhang, Yunxia Shen, Tingting Wei, Guoxu Wang
Summary: The Soil Freezing Characteristic Curve (SFCC) describes the relationship between unfrozen water content and subzero temperature. This study investigated the impacts of initial water content, dry density, soil type, and desalination on SFCC during freezing-thawing process. Results showed that initial water content, soil type, and desalination greatly influenced SFCC, while dry density had little effect. Hysteresis behavior was observed in all soil samples, more obvious in the temperature range of -5°C < T < 0°C.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Mathematics, Applied
Yaozeng Wang, Yong Ge, Paulo J. M. Monteiro
Summary: This paper presents a trans-scale finite element model based on hydraulic-thermal-mechanical coupling equations of porous medium to simulate the behavior of concrete during freezing and thawing. The simulation results reveal the mechanism of air voids protecting the concrete from freezing and thawing damage, and the mechanical field shows the freezing and thawing damage occurs preferentially at the interfacial transition zone, because the stress concentration due to the irregular distribution of aggregates and water resistance of aggregates. The effect of the cement paste's pore structure, including the spacing of air voids, on the ability of concrete to resist freezing and thawing is presented.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2021)
Article
Engineering, Environmental
Xu Li, Xiaokang Li
Summary: In this study, a soil freezing-thawing model is proposed based on statistical thermodynamics, which can solve the thermo-hydraulic field problems in the freezing-thawing process. The model derives the phase equilibrium relation for the pore ice-water interface and defines the theoretical relationship between the freezing temperature and the potential energy of pore-water. By using this relationship, the thermo-hydraulic field in the soil freezing-thawing process can be solved. The proposed model is applicable to different types of soil and other porous media undergoing freezing-thawing processes.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Bo-Quan Lu, Shu-Ying Zang, Li-Quan Song, Li Sun, Miao LI, Di Bing
Summary: Based on the observation of soil temperature and water content in two representative ecosystems in the Da Xing'anling Mountains in Northeast China from 2017 to 2020, this study explored the effects of climatic conditions and local factors on the freezing-thawing processes of active layer soils. The results showed delays in freezing and thawing start times in both ecosystems, and longer thawing time compared to freezing time in the active layer soil. These findings are important for understanding the formation and evolution of the active layer and permafrost in Xing'an permafrost regions and predicting ecosystem responses under climate change and permafrost degradation.
ADVANCES IN CLIMATE CHANGE RESEARCH
(2023)
Article
Construction & Building Technology
Shaolong Jie, Zurun Yue, Zhiqi Sun, Hanbing Zhang, Tianfei Hu, Tiecheng Sun, Lanlan Yuan, Peng Xie, Shuai Mao
Summary: This study evaluated the mechanical degradation characteristics of cement-stabilized macadam (CSM) under long-term freezing-thawing cycles. The results showed that C5P0.1 could be used in seasonal frozen soil regions, and removal of larger fine particles could reduce the rate of strength deterioration. In addition, higher cement content improved the resistance of CSM to freezing-thawing strength degradation.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Bagdat Teltayev, Cesare Oliviero Rossi, Koblanbek Aitbayev, Elena Suppes, Aidos Yelshibayev, Assel Nugmanova
Summary: This paper presents the experimental study of freezing and thawing patterns of highways in Kazakhstan. The study aims to develop a methodology for determining the depth of freezing of subgrade soils and understand the temperature and moisture changes. The results show that temperature fluctuation decreases with depth, and freezing rate varies. The thawing process is relatively uniform but with different rates. The asphalt-concrete layers and upper part of the subgrade experience a frozen state, and moisture changes abruptly at the beginning and end of the cold period.
APPLIED SCIENCES-BASEL
(2022)
Article
Food Science & Technology
Kun Yang, Chuhan Bian, Yixuan Dong, Jun Mei, Jing Xie
Summary: Ultrasound assisted thawing (UAT) is an emerging thawing method that can shorten thawing time and improve the quality of thawed sea bass. The effect of frequency and power on UAT in aquatic products has not been systematically studied. This experiment evaluated the effect of frequency, alone or in combination, and different power levels during UAT on thawing time, water-holding capacity, quality, and myofibrillar protein structure in sea bass. The study found that UAT can improve the quality of thawed sea bass, especially at specific power and frequency settings.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Review
Food Science & Technology
Tobi Fadiji, Seyed-Hassan Miraei Ashtiani, Daniel Onwude, Zhiguo Li, Umezuruike Linus Opara
Summary: Freezing of food products is a complex process involving heat and mass transfer, which can affect the quality of the frozen product. Numerical modeling, particularly Finite Element Modeling (FEM), is a widely applied tool in the food industry to monitor and control quality changes during freezing and thawing processes. This technique provides accurate predictions and visual information for improved quality control and advancements in cold storage and transport technologies.
