Deformations of loess soils caused by changes in the microaggregate structure

Mokritskaya, Т. P.; Tushev, A. V.; Samoylich, Kseniia A.; Baranov, Petr N.

doi:10.1007/s10064-018-1361-z

Cited by 10 publications

(2 citation statements)

References 18 publications

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“…With advancements in observational techniques, the characteristics of loess collapse are being increasingly explained from a structural perspective, gaining widespread recognition [22,23]. Loess structure encompasses the size, shape, surface characteristics, and spatial arrangement of constituent particles [24,25] and the bonding form between skeletal particles and cementitious materials [26,27], as well as the size, morphology, and distribution of pores [28,29]. The ability of the soil to maintain its original structural state without disruption is used to measure the strength of the loess structure.…”

Section: Introductionmentioning

confidence: 99%

Water Sensitivity and Structural Properties of Loess

Zhang,

Hu,

et al. 2024

Advances in Civil Engineering

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Loess has unique water sensitivity due to its distinct formation environment. The structure of loess is undercompactness, weak cementation, and porousness. The water sensitivity of loess directly leads to many environmental problems and geological hazards, including subgrade subsidences, slope collapse or failures, and building cracking. To reveal the relationship between water sensitivity and loess structure, confined-compression collapsibility tests and triaxial-collapsibility tests were performed on loess in different areas. The collapsibility coefficient, porosity ratio, and collapsibility rate were analyzed. Results show that the collapsibility process of loess can be divided into three stages: wetting, softening, and settling. The collapsibility sensitivity of loess is determined primarily by its structural and hydraulic state.

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Section: Introductionmentioning

confidence: 99%

Water Sensitivity and Structural Properties of Loess

Zhang,

Hu,

et al. 2024

Advances in Civil Engineering

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“…Defined as a combination of soil fabric and interparticle bonding [21,22], the soil structure is essentially a kind of physical property. Hence, it is usually associated with the complex mechanical or physical behavior of soil fabric [23], such as pore size [24] and distribution [25] and aggregate arrangement [26,27]. However, such work cannot be used to directly obtain or characterize the structural strength of soil, which reflects the bonding energy between soil aggregates or units [1,23].…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Obtaining the Loess Structural Index from Computed Tomography Images: A Case Study from the Lvliang Mountains of the Loess Plateau (China)

Tang

Guo

et al. 2021

Land

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The structural index is an important quantitative parameter for revealing the structural properties of loess. However, there is no a widely accepted measurement method for structural index at present. This study aims at presenting a novel method for obtaining the loess structural index (LSI), based on the application of computed tomography (CT) scanning techniques and laboratory physico-mechanical tests. The mountainous area of Lvliang in northwest China was taken as the study area, and Late Pleistocene loess samples were taken from various sites in the region. Several physical parameters were first measured using laboratory tests, including dry density, pore ratio, and liquidity index. CT scanning was used to observe sample microstructures, and a mathematical relationship was established between CT image parameters and the physical property indices, through three dimensions (3D) reconstruction and slice porosity analysis. The results revealed that LSI can be expressed as a non-linear function related to CT image parameters, dry density, and the liquidity index of the loess. Compared with traditional calculation methods, this novel technique calculates the LSI by using an empirical formula, which is less labor-intensive. Such results indicate that the method warrants wide application in the future.

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Total deformation prediction of the typical loess tunnels

Xue

Yang

et al. 2020

Bull Eng Geol Environ

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Deformations of loess soils caused by changes in the microaggregate structure

Cited by 10 publications

References 18 publications

Water Sensitivity and Structural Properties of Loess

Water Sensitivity and Structural Properties of Loess

A Novel Method for Obtaining the Loess Structural Index from Computed Tomography Images: A Case Study from the Lvliang Mountains of the Loess Plateau (China)

Total deformation prediction of the typical loess tunnels

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