☆ 4.7 Article

Multiscale analysis of pore structure in clay due to freeze-thaw

CASE STUDIES IN CONSTRUCTION MATERIALS (2023)

相关参考文献

注意：仅列出部分参考文献，下载原文获取全部文献信息。

Article Engineering, Geological

Characterization of unfrozen water in highly organic turfy soil during freeze-thaw by nuclear magnetic resonance

Yuanyuan He et al.

Summary: This study investigated the freezing characteristics of a widely distributed soil called turfy soil in seasonally frozen regions of northeastern China using the nuclear magnetic resonance method. The results showed a significant phase change within the soil between -2°C to -4°C, and the freezing process could be divided into three stages. The formation of small pores and the connection of large pores made the soil looser after freeze-thaw. The findings provide a basis for studying soil with high organic matter content and the unfrozen water content during freeze-thaw cycles in cold regions.

ENGINEERING GEOLOGY (2023)

添加到收藏夹

Article Engineering, Environmental

Pore-scale study on the characteristic hydraulic conductivity of a dispersive lean clay affected by salinity and freeze-thaw

Yan Han et al.

Summary: The relationship between the permeability of dispersive soil and its pore-scale characteristics was investigated in this study. The results showed that salt content and freeze-thaw cycles have different effects on pore structure and permeability. Pore diameter and pore volume were found to be the major factors affecting permeability.

BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT (2022)

添加到收藏夹

Article Engineering, Environmental

Experimental study on deformation characteristics of chloride silty clay during freeze-thaw in an open system

Jianpeng Liu et al.

Summary: Understanding the deformation characteristics and mechanisms of chloride soils during freeze-thaw is crucial for the safe application of artificial ground freezing (AGF). This study conducted a series of unidirectional open-system freeze-thaw tests on saturated clay with varying NaCl content. The results showed that the freezing front propagated rapidly and reached a plateau at the thermal equilibrium stage, with the location depending on salt content. The amount and rate of solution intake during freeze-thaw were also found to be salt content dependent. The total frost heave decreased with increasing salt content, mainly due to solution intake. Moreover, the evolution of pore structure was more significant in specimens with lower salt content, leading to more significant frost heave.

COLD REGIONS SCIENCE AND TECHNOLOGY (2022)

添加到收藏夹

Article Environmental Sciences

Effects of cyclic freezing and thawing on the shear behaviors of an expansive soil under a wide range of stress levels

Wei-lie Zou et al.

Summary: This paper investigates the influence of multiple freeze-thaw cycles on the mechanical behaviors of expansive soil under different confining stresses. The results show that the cycles mainly affect the soil's macropores, leading to cracks and slight swelling, which significantly reduces the soil's mechanical properties. The shear stress-strain curves transition from strain-softening to strain-hardening as the confining stress increases, and a simple empirical model can describe the strain-softening behavior of the stress-strain curves under low confining stresses.

ENVIRONMENTAL EARTH SCIENCES (2022)

添加到收藏夹

Article Construction & Building Technology

Practical prediction method on thaw deformation of soft clay subject to artificial ground freezing based on elaborate centrifuge modeling experiments

Jie Zhou et al.

Summary: Artificial ground freezing (AGF) is an important method for underground construction in soft soil areas. The thawing process is more complicated and harder to control compared to freezing. This paper presents a practical method for predicting thaw deformation, combining a practical thaw deformation model and centrifuge modeling experiments. The method is validated and proven to be applicable, providing valuable insights for predicting thaw deformation induced by AGF construction under extreme conditions.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2022)

添加到收藏夹

Article Environmental Sciences

Effect of freeze-thaw cycles on mechanical behavior of clay-gravel mixtures

Yong-gan Zhang et al.

Summary: The effects of freeze-thaw cycles on compacted clay-gravel mixtures were studied. It was found that freeze-thaw cycles significantly changed the mechanical characteristics of the mixtures, but the shape of the stress-strain curve was less affected. The number of freeze-thaw cycles had an impact on the failure strength, elastic modulus, cohesion, and internal friction angle of the samples.

JOURNAL OF MOUNTAIN SCIENCE (2022)

添加到收藏夹

Article Construction & Building Technology

Frost heave and thawing settlement of the ground after using a freeze-sealing pipe-roof method in the construction of the Gongbei Tunnel

Haibing Cai et al.

Summary: This study investigates the frost heave and thawing settlement laws of the ground during the construction of the Gongbei Tunnel. By conducting laboratory tests and numerical simulations, the researchers obtained important parameters and accurately predicted the displacement of the ground, showing the effectiveness of their proposed method.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2022)

添加到收藏夹

Article Engineering, Environmental

Effects of soil structure on cyclic freeze-thaw induced volumetric behaviour using a modified double-cell triaxial system

Charles Wang Wai Ng et al.

Summary: Weather induced freeze-thaw cycles can cause significant alteration on soil volume and hence induce serviceability issues to earthen and structures facilities. However, the contribution of soil structure has rarely been considered in this process. This research investigates the volumetric behavior of soil during freeze-thaw cycles and reveals the balance between thawing contraction and freezing expansion.

COLD REGIONS SCIENCE AND TECHNOLOGY (2022)

添加到收藏夹

Article Engineering, Environmental

Mechanical characteristics and microstructure study of saline soil stabilized by quicklime after curing and freeze-thaw cycle

Jiyun Nan et al.

Summary: This study investigates the effects of curing time, numbers of freeze-thaw cycles, and constraint conditions on the engineering properties of lime-stabilized saline soil in cold regions. The results show that three-dimensional constraint leads to the highest unconfined compression strength (UCS), while no constraint results in the lowest UCS. Curing for longer periods and increasing freeze-thaw cycles generally improve the UCS, although there is a decrease in UCS after initial freeze-thaw cycles for specimens cured for 28 days. The microstructure analysis reveals the role of pozzolanic reaction and carbonation in the curing process.

COLD REGIONS SCIENCE AND TECHNOLOGY (2022)

添加到收藏夹

Article Engineering, Geological

Structural damage and shear performance degradation of fiber-lime-soil under freeze-thaw cycling

Li Wei et al.

Summary: Freeze-thaw cycling damages the soil structure and degrades its shear performance. Fiber reinforcement changes the stress-strain behavior and failure pattern of soil, resulting in better shear performance and freeze-thaw durability for fiber-lime-soil compared to lime-soil.

GEOTEXTILES AND GEOMEMBRANES (2022)

添加到收藏夹

Article Engineering, Geological

Volumetric behaviour of clays under freeze-thaw cycles in a mesoscopically uniform element

Satoshi Nishimura et al.

Summary: The study investigates the volume change behavior of fine-grained soils under repeated freeze-thaw cycles. It found that soils reach residual states unique to each stress level after freeze-thaw cycles, and the freeze-thaw residual line (FTRL) represents these states. The distance of the current soil state to the FTRL, defined as the freeze-thaw state parameter, correlates well with subsequent volume changes.

GEOTECHNIQUE (2021)

添加到收藏夹

Article Engineering, Environmental

Influence of freeze-thaw cycles on microstructure and hydraulic conductivity of saline intact loess

Jian Xu et al.

Summary: This study investigated the influence of freeze-thaw cycles on the microstructure and hydraulic conductivity of saline intact loess specimens. Results suggest that the void ratio and hydraulic conductivity of saline intact loess increase after F-T cycles or at higher salt contents, consistent with changes in porosity. An empirical relationship between hydraulic conductivity and void ratio was proposed, and the calculated data aligned well with measured data, establishing the validity of the proposed equation.

COLD REGIONS SCIENCE AND TECHNOLOGY (2021)

添加到收藏夹

Article Engineering, Environmental

Permeability prediction of porous geomaterials subjected to freeze-thaw cycles based on 3D reconstruction technology

Xiao-Ping Zhou et al.

Summary: This study improves the understanding of engineering leakage mechanism in cold regions by conducting CT tests and CFD predictions on a sample, proposing a novel PE algorithm to enhance permeability prediction efficiency, and successfully predicting the permeability coefficient of the sample. The effect of FT cycles on the seepage field of the sample and the mechanism of permeability evolution under FT cycles are also analyzed.

COLD REGIONS SCIENCE AND TECHNOLOGY (2021)

添加到收藏夹

Article Engineering, Geological

Freeze-thaw impact on macropore structure of clay by 3D X-ray computed tomography

Wenhu Fan et al.

Summary: The study investigates the quantitative changes in soil macropores, specifically fissures, due to freeze-thaw using 3D X-ray Computed Tomography. Results show significant alterations in transverse-sectional macro-porosity and macropore size, as well as variations in transverse-sectional fissure porosity and longitudinal-sectional fissure orientation frequency distribution across specimen height. The formation of more horizontal fissures in unfrozen zones or near freezing fronts is observed, indicating the impact of water-supply conditions on soil structural changes during freeze-thaw processes.

ENGINEERING GEOLOGY (2021)

添加到收藏夹

Article Engineering, Environmental

Finite element study on temperature field of subway connection aisle construction via artificial ground freezing method

Yong Fu et al.

Summary: This study investigates the development and spatial distribution of temperature field during artificial freezing in the connection aisle reinforcement construction of Nanning Subway Line 3 using a three-dimensional finite element method. Critical zones and the formation of frozen soil curtain are identified while the effects of thermal physical parameters and soil conditions are analyzed systematically. The study provides insights into temperature field behavior of frozen soil during artificial freezing, benefiting both academic and industrial researchers in similar fields.

COLD REGIONS SCIENCE AND TECHNOLOGY (2021)

添加到收藏夹

Article Engineering, Civil

Hydraulic conductivity of gravelly soils with various coarse particle contents subjected to freeze-thaw cycles

Yang Lu et al.

Summary: The hydraulic conductivity of gravelly soils is significantly influenced by factors such as gravel content, confining stress, number of F-T cycles, and initial water content. The presence of gravel particles alters the soil structure, leading to a significant increase in water conductivity.

JOURNAL OF HYDROLOGY (2021)

添加到收藏夹

Article Engineering, Environmental

A model for evaluating settlement of clay subjected to freeze-thaw under overburden pressure

Wenhu Fan et al.

COLD REGIONS SCIENCE AND TECHNOLOGY (2020)

添加到收藏夹

Article Engineering, Geological

Multiscale analysis of freeze-thaw effects induced by ground heat exchangers on permeability of silty clays

Giorgia Dalla Santa et al.

GEOTECHNIQUE (2019)

添加到收藏夹

Article Engineering, Environmental

Impact of freeze-thaw on the physical properties and compressibility of saturated clay

Wenhu Fan et al.

COLD REGIONS SCIENCE AND TECHNOLOGY (2019)

添加到收藏夹

Article Computer Science, Interdisciplinary Applications

Model test and numerical simulation of frost heave during twin-tunnel construction using artificial ground-freezing technique

Haibing Cai et al.

COMPUTERS AND GEOTECHNICS (2019)

添加到收藏夹

Article Engineering, Environmental

Effects of freezing-thawing and cyclic loading on pore size distribution of silty clay by mercury intrusion porosimetry

Zhong-Liang Zhang et al.

COLD REGIONS SCIENCE AND TECHNOLOGY (2018)

添加到收藏夹

Article Engineering, Environmental

Characterization of freeze-thaw effects within clay by 3D X-ray Computed Tomography

Shengfu Wang et al.

COLD REGIONS SCIENCE AND TECHNOLOGY (2018)

添加到收藏夹

Article Engineering, Environmental

Experimental inference on dual-porosity aggravation of soft clay after freeze-thaw by fractal and probability analysis

Jie Zhou et al.

COLD REGIONS SCIENCE AND TECHNOLOGY (2018)

添加到收藏夹

Article Construction & Building Technology

Test investigation on mechanical behavior of steel pipe-frozen soil composite structure based on Freeze-Sealing Pipe Roof applied to Gongbei tunnel

Xiangdong Hu et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2018)

添加到收藏夹

Article Environmental Sciences

Analysis of microscopic pore structures of the silty clay before and after freezing-thawing under the subway vibration loading

Zhong-Liang Zhang et al.

ENVIRONMENTAL EARTH SCIENCES (2017)

添加到收藏夹

Article Engineering, Environmental

Structural change and volumetric shrinkage of clay due to freeze-thaw by 3D X-ray computed tomography

Shengfu Wang et al.

COLD REGIONS SCIENCE AND TECHNOLOGY (2017)

添加到收藏夹

Article Engineering, Environmental

Experimental and theoretical characterization of frost heave and ice lenses

Jiazuo Zhou et al.

COLD REGIONS SCIENCE AND TECHNOLOGY (2014)

添加到收藏夹

Article Chemistry, Applied

Mercury intrusion porosimetry in concrete technology: tips in measurement, pore structure parameter acquisition and application

Hongyan Ma

JOURNAL OF POROUS MATERIALS (2014)

添加到收藏夹

Article Soil Science

Quantification of freeze-thaw related structure in cultivated topsoils using X-ray computer tomography

Ioana A. Taina et al.

CANADIAN JOURNAL OF SOIL SCIENCE (2013)

添加到收藏夹

Article Engineering, Geological

Experiment evidence on the temperature dependence of desiccation cracking behavior of clayey soils

Chao-Sheng Tang et al.

ENGINEERING GEOLOGY (2010)

添加到收藏夹

Article Engineering, Geological

Influencing factors of geometrical structure of surface shrinkage cracks in clayey soils

Chaosheng Tang et al.

ENGINEERING GEOLOGY (2008)

添加到收藏夹

Article Chemistry, Physical

Scale-dependent nature of the surface fractal dimension for bi- and multi-disperse porous solids by mercury porosimetry

Baoquan Zhang et al.

APPLIED SURFACE SCIENCE (2006)

添加到收藏夹

Article Soil Science

Soil structure and the effect of management practices

M Pagliai et al.

SOIL & TILLAGE RESEARCH (2004)

添加到收藏夹

Article Soil Science

Changes in some physical properties of a clay soil in Central Italy following the passage of rubber tracked and wheeled tractors of medium power

M Pagliai et al.

SOIL & TILLAGE RESEARCH (2003)

添加到收藏夹

Article Computer Science, Interdisciplinary Applications

Acquisition, optimization and interpretation of X-ray computed tomographic imagery: applications to the geosciences

RA Ketcham et al.

COMPUTERS & GEOSCIENCES (2001)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.