Shrinkage Limit Studies from Moisture Content: Electrical Resistivity Relationships of Soils

Vincent, Nimi Ann; Shivashankar, R.; Lokesh, K. S.; Nath, Divya

doi:10.1007/s13369-020-05325-5

Cited by 6 publications

(2 citation statements)

References 15 publications

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“…Specifically, the ρ increases rapidly with S r in the range of low S r . The increase rate of ρ with S r gets smaller after S r exceeds a particular value and ρ tends to be stable at a certain value at very low S r , which is consistent with the results reported by the references [31,32]. The S r normally presents a positive relationship with dry density and water content, the larger the S r is, the more dynamic the cation ions in the pore water within the particle boundary [33,34].…”

Section: Relationship Of Volumetric Water Content-saturation-resistivitysupporting

confidence: 90%

Experimental study of water migration characteristics in compacted loess subjected to rainfall infiltration

Zhang

Han

et al. 2022

PLoS ONE

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In order to study the effect of the rainfall infiltration on water migration in compacted loess, a model device was developed for testing water migration in the soil under rainfall conditions. In this study, the volumetric water content and resistivity of soil were introduced into the model test device. This model test device was applied to the study of water migration characteristics in compacted loess under different rainfall conditions. The results show that the resistivity decreases with the increase of the volumetric water content at the same depth of the loess column. In this way, the characteristics of the water migration can also be reflected from the change of the resistivity. There is an intimate relationship between the resistivity and volumetric water content, dry density. The volumetric water content and dry density are normalized by saturation of loess, arriving the equation of saturation against the resistivity. The characteristics of rainfall infiltration in compacted loess show a particular pattern, which demonstrates that, with the increase of dry density of the loess column, the rainfall infiltration line present “Y”, “D” and “Λ” shape distribution respectively, under light rain, heavy rain and rainstorm.

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Section: Relationship Of Volumetric Water Content-saturation-resistivitysupporting

confidence: 90%

Experimental study of water migration characteristics in compacted loess subjected to rainfall infiltration

Zhang

Han

et al. 2022

PLoS ONE

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“…( 3) indicates that the increase in concentration can significantly reduce the thickness of the double electric layer of soil particles in expansive soil. Since the free Na + ions in sodium chloride solutions are positively charged, they tend to be attracted by the negatively charged soil particles, achieving electrical equilibrium to a certain extent, and the polar water molecules adsorbed in the diffusion layer between soil particles are correspondingly reduced [25][26][27][28]. The subsequent accumulation of dynamic load is actually a process of compaction of soil, the water molecules between soil particles are extruded, and the spacing between particles is constantly reduced.…”

Section: Nonclosure Degree Of Hysteretic Curve ε Pmentioning

confidence: 99%

The Effect of Pore Solution on the Hysteretic Curve of Expansive Soil under Cyclic Loading

Xin-shan¹,

Wang²,

Zhou³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

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A dynamic triaxial instrument was used to study the effects of different concentrations of sodium chloride and stress amplitudes on the dynamic properties of an expansive soil under cyclic loading. In particular, four parameters were considered in such a parametric investigation, namely, hysteresis curve morphology characteristic non-closure degree ε p , the ratio of the short and long axis α, the slope of the long axis k and the enclosed area S. The results show that with an increase in the sodium chloride concentration, the soil particle double electric layer becomes thinner, the distance between soil particles decreases, and the whole sample becomes denser. The ε p -N, α-N and S-N relation curves all show a decreasing trend. The ratio of plastic deformation to total deformation grows with increasing the dynamic stress amplitude, and the curves show an upwards trend. The k-N relationship curve displays an increasing trend with the concentration and a general downwards trend as the dynamic stress amplitude is made higher. This also indicates that sodium chloride solutions can improve the engineering properties of expansive soil to a certain extent. With an increase in the vibration times N, the shape of the hysteretic curve becomes narrower, and the whole soil exhibits a cyclic strain hardening. With the help of an exponential function, a model is introduced to predict the relationship between the concentration and the hysteretic curve.

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Resistivity responses of sodium sulfate and sodium chloride-type loess under different water and salinity conditions

Sun

Yan

et al. 2023

Environ Sci Pollut Res

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Shrinkage Limit Studies from Moisture Content: Electrical Resistivity Relationships of Soils

Cited by 6 publications

References 15 publications

Experimental study of water migration characteristics in compacted loess subjected to rainfall infiltration

Experimental study of water migration characteristics in compacted loess subjected to rainfall infiltration

The Effect of Pore Solution on the Hysteretic Curve of Expansive Soil under Cyclic Loading

Resistivity responses of sodium sulfate and sodium chloride-type loess under different water and salinity conditions

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