The effect of wetting and drying cycles on the swelling-shrinkage behavior of the expansive soils improved by nanosilica and industrial waste

Shahsavani, Sajad; Vakili, Amir Hossein; Mokhberi, Mehdi

doi:10.1007/s10064-020-01851-6

Cited by 36 publications

(11 citation statements)

References 37 publications

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“…For individual cycles, the shrinkage potential was larger than the swelling potential in both vertical and horizontal directions. The difference between shrinkage potential and swelling potential indicated the irreversible deformation [31]. Accordingly, the irreversible deformation of these soil samples ranged from 0.34% to 0.13% in the vertical direction, from 1.48% to 0.15% in the horizontal direction, from 3.58% to 0.43% in volume, and in general, they exhibited decreasing trends with repeated drying-wetting cycles.…”

Section: Evolution Of Soil Size and Shrinkage-swelling Potential Duri...mentioning

confidence: 92%

“…Soil shrink-swell behavior is closely associated with soil intrinsic properties, including clay content and type [25,26], inorganic carbonate content [16], dry bulk density [27,28], etc. On the other hand, it can also be strongly impacted by a large number of influencing factors from external conditions, such as surcharge pressure [29,30], additives [31,32], pore water chemistry [33], dry intensity [34], the freezing-thawing cycle [35,36] and the drying-wetting cycle [37,38].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Investigation on the Impact of Drying–Wetting Cycles on the Shrink–Swell Behavior of Clay Loam in Farmland

Zhang

Huang

et al. 2022

Agriculture

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Soil shrink–swell behavior is a common phenomenon in farmland, which usually alters the process of water and solute migration in soil. In this paper, we report on a phenomenological investigation aimed at exploring the impact of drying–wetting cycles on the shrink–swell behavior of soil in farmland. Samples were prepared using clay loam collected from farmland and subjected to four drying–wetting cycles. The vertical deformation of soil was measured by a vernier caliper, and the horizontal deformation was captured by a digital camera and then calculated via an image processing technique. The results showed that the height, equivalent diameter, volume and shrinkage-swelling potential of the soil decreased with the repeated cycles. Irreversible deformation (shrinkage accumulation) was observed during cycles, suggesting that soil cracks might form owing to previous drying rather than current drying. The vertical shrinkage process consisted of two stages: a declining stage and a residual stage, while the horizontal shrinkage process had one more stage, a constant stage at the initial time of drying. The VG-Peng model fit the soil shrinkage curves very well, and all shrinkage curves had four complete shrinkage zones. Drying–wetting cycles had a substantial impact on the soil shrinkage curves, causing significant changes in the distribution of void ratio and moisture ratio in the four zones. However, the impact weakened as the number of cycles increased because the soil structure became more stable. Vertical shrinkage dominated soil deformation at the early stage of drying owing to the effect of gravity, while nearly isotropic shrinkage occurred after entering residual shrinkage. Our study revealed the irreversible deformation and deformation anisotropy of clay loam collected from farmland during drying–wetting cycles and analyzed the shrink–swell behavior during cycles from both macroscopic and microscopic points of view. The results are expected to improve the understanding of the shrink–swell behavior of clay loam and the development of soil desiccation cracks, which will be benefit research on water and solute migration in farmland.

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Section: Evolution Of Soil Size and Shrinkage-swelling Potential Duri...mentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Impact of Drying–Wetting Cycles on the Shrink–Swell Behavior of Clay Loam in Farmland

Zhang

Huang

et al. 2022

Agriculture

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“…Basma et al [7] stated that during wetting and drying cycles, the quantity of voids within the soil system reduces which mitigates the ability of the soil to gain more water upon further wetting, which in turn reduces its ability to increase its volume. According to [49], in the initial state, the clay content of a soil specimen is present within the soil matrix in the form of weak thin sheets/layers which has the ability to absorb a significant quantity of water. However, upon subjection to continuous wetting and drying phases, the layers lose their initial structure and become connected to one another which reduces their water absorption capacity and in turn, reduces the ability to expand.…”

Section: Absolute Volumetric Swellmentioning

confidence: 99%

Effect of biochar on desiccation of marine soils under constant and cyclic temperatures

et al. 2022

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Biochar has recently been gaining increasing attention as a stable and sustainable soil amendment material. However, the effect of biochar amendment on the desiccation behaviour of coastal soils has not yet been examined. Consequently, the present study primarily investigated the effect of exposing biochar-amended marine soil (BAS) to constant and cyclic temperatures on its swell–shrink, evaporation and desiccation cracking characteristics. Biochar contents of 1%, 2%, 4% and particle size ranges of PS-1 (600 μm < D ≤ 2000 μm), PS-2 (300 μm < D ≤ 600 μm), PS-3 (D ≤ 75 μm) (D: biochar particle diameter) were employed. It was revealed that the absolute volumetric shrinkage of both unamended and biochar-amended specimens increased as the number of thermal cycles increased. Under continuous heat exposure, 4% (PS-3) BAS in compacted state achieved the maximum reduction in volumetric shrinkage which was 42%. Moreover, under continuous heat exposure, 2% (PS-1) BAS in slurry state achieved the highest reduction in desiccation cracking, which was 73%. The present study highlights the importance of identifying the most effective combination of biochar content and particle size required to achieve a desired outcome, in order to gain the maximum benefit of biochar as an amendment material at the lowest possible cost.

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“…The close proximity of compacted clayey soil systems to the atmosphere leaves a compacted clayey layer unprotected, and prone to damage from desiccation. Compacted clayey layers in earthen covers undergo seasonal changes in water content, even at significant depths, due to seasonal variations in precipitation and evapotranspiration (Daniel andWu,1993 (Shahsavani et al, 2020). In the chemical stabilization, some additives such as lime, cement, fly ash, silica fume etc., are added, which physically interacts with the soil and change the index properties (Chen, 1988 The basic objective of this research is to investigate the effects of quartzite on the desiccation cracks of clayey soils exposed to wetting-drying cycles.…”

Section: Introductionmentioning

confidence: 99%

Effects of Quartzite on the Desiccation Cracks of Clayey Soils Exposed to Wetting-Drying Cycles

Yarbaş¹,

Kalkan²

2022

IJSEA

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The compacted clayey soils crack on drying because of their high swelling potential, and their hydraulic conductivities increase. To solve this problem, it is essential to stabilize the clayey soils using additive materials. The aim of this study is to examine the suitability of quartzite as a stabilization material to reduce the development of desiccation cracks in compacted clayey liner and cover systems. Experimental study was conducted to investigate the effect of wetting-drying cycles on the initiation and evolution of cracks in compacted clayey soils. For experimental studies, seven samples were prepared stabilized by using 0%, 2.5%, 5%, 7,5%, 10%, 12,5% and 15% quartzite and then they were subjected to four subsequent wetting-drying cycles. The results show that quartzite decreases the development of desiccation cracks on the surface of compacted samples. It is concluded that quartzite as a geological material can be successfully used to reduce the development of desiccation cracks in compacted clayey liner and cover systems exposed wetting-drying cycles.

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The effect of wetting and drying cycles on the swelling-shrinkage behavior of the expansive soils improved by nanosilica and industrial waste

Cited by 36 publications

References 37 publications

Experimental Investigation on the Impact of Drying–Wetting Cycles on the Shrink–Swell Behavior of Clay Loam in Farmland

Experimental Investigation on the Impact of Drying–Wetting Cycles on the Shrink–Swell Behavior of Clay Loam in Farmland

Effect of biochar on desiccation of marine soils under constant and cyclic temperatures

Effects of Quartzite on the Desiccation Cracks of Clayey Soils Exposed to Wetting-Drying Cycles

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