Results 51 to 60 of about 6,675,201 (223)

Laboratory Tests of Soil Frost Heaving

Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture
In Presidential Decree No. 309 of the Russian Federation, approved on 7 May 2024, “On the National Development Goals of the Russian Federation for the Period until 2030 and the Prospect until 2036”, the President decides to establish targets and objectives, the achieve- ment of which must demonstrate the achievement of the comfortable and safe living ...
A. D. Basharin, V. S. Churilin, A. V. Sukhorukov, M. V. Badina   +3 more
openaire   +1 more source

Numerical simulation study on the characteristics and propagation attenuation of vibration signals in freezing pipe fracture

Deep Underground Science and Engineering, EarlyView.
This research study employs analysis system (ANSYS) fluid–structure interaction simulations to investigate the generation and attenuation of vibration signals resulting from freezing pipe fractures in artificial ground freezing projects. By evaluating key variables—including frozen soil elastic modulus, brine inlet pressure, and external pipe pressure ...
Yi Cao, Yansen Wang, En Chen, Meng Zhao
wiley   +1 more source

Measurement of Suction Pressure Generated in the Process of Frost Heaving in Rock

Journal of MMIJ, 2017
Recently it has been found that frost heave phenomena can be seen not also in soil but also in rock. It is obvious, however, that the number of researches on frost heaving in rock is much less than that of researches on frost heaving in soil.
Dai NAKAMURA, Takayuki KAWAGUCHI, Tatsuya WATANABE, Shunzo KAWAJIRI, Shintaro YAMASAKI, Satoshi YAMASHITA   +5 more
doaj   +1 more source

Independent leaf and root responses to autumn freezing in perennial herbs: Insights from cutting and transplant manipulations

Grassland Research, EarlyView.
In this study, we compared two sampling approaches to assess autumn freezing resistance. Our goal was to determine whether the commonly employed cutting method, which disrupts root‐tissue connectivity, provides a valid measure of true freezing resistance.
Zhengjie Yan, Cheng Chen, Xin Jing, Shuai Ren, Junpeng Rui, Tao Wang, Jin‐Sheng He   +6 more
wiley   +1 more source

Experimental Study on Frost heave of Silty Clay in Seasonally Frost Soil Regions [PDF]

, 2012
A new instrument for freezing-thawing test was developed by Cold and Arid Regions Environmental and engineering research institute (CAREERI), Chinese academy of sciences.
Zhiqin, WU, Huixin, Zhao, Zhaoyu, LI
core   +1 more source

New Schmidt hammer exposure‐age dating calibrations for the Last Glacial Termination in NW Scotland: Development and application to undated Torridon Group sandstone surfaces in Wester Ross

Journal of Quaternary Science, EarlyView.
ABSTRACT An understanding of the terrestrial extent, retreat dynamics and climate–glacier coupling of ice masses during the Last Glacial Termination (LGT, ~18–11 ka) is often limited by a fragmentary geomorphological record and is dependent on precise, accurate and robust dating frameworks.
Alastair M. Curry, David Small, Oliver T. Bartlett, Jonathan Newitt   +3 more
wiley   +1 more source

Test and numerical simulation on frost heave in frozen soils in intermittent freezing mode [PDF]

, 2009
In this paper, experimental research on the response of frost heave in intermittent freezing mode characterized by different frequencies and amplitudes was carried out in opening system, temperature distribution, temperature gradient and evolution of ...
Hu, Kun, Zhou, Guo-qing, Zhou, Jin-sheng, Shang, Xiang-yu   +3 more
core   +1 more source

Effects of Biochar on Freezing Temperature and Unfrozen Water Content in Pb‐Contaminated Seasonally Frozen Soils: Implications for Mitigating Land Degradation

Land Degradation &Development, EarlyView.
ABSTRACT Freeze–thaw processes are important drivers of land degradation in cold regions, and soil freezing temperature and unfrozen water content are key parameters for characterizing soil hydrothermal conditions and water phase transitions during freezing.
Shanbo Han, Yaling Chou, Wei Cao, Fupeng Yang, Yu Wang, Xunkun Guo   +5 more
wiley   +1 more source

Uneven frost heave deformation in water conveyance channels in cold-arid regions: Experimental evidence and thermo-hydro-mechanical coupling analysis

Journal of Rock Mechanics and Geotechnical Engineering
Uneven frost heave deformation can shorten the operational lifespan of foundation engineering. Clarifying the mechanisms of uneven frost heave facilitates the targeted mitigation of frost damage.
Zhaoxi Wang, Chen Cao, Qingbo Yu, Jiejie Shen, Mengxia Han, Weitong Xia, Xun Sun, Qing Wang   +7 more
doaj   +1 more source

Regression models of irregular vertical displacement of a roadway cross section caused by frost heaving

Magazine of Civil Engineering, 2023
Subgrade clay is subjected to frost heaving under the effect of cold air and adequate soil moisture. The existing prediction models for frost heaving have a number of drawbacks: they are complicated for practical use and unable to evaluate irregular ...
Churilin Vladimir, Matvienko Oleg, Efimenko Vladimir, Efimenko Sergei   +3 more
doaj   +1 more source