Collapse/Swell Potential of Residual Laterite Soil Due to Wetting and Drying-wetting Cycles

Kholghifard, Mehrdad; Ahmad, Khursheed; Ali, Nazri; Kassim, Anuar; Kalatehjari, Roohollah

doi:10.1007/s40009-013-0221-4

Cited by 20 publications

(7 citation statements)

References 4 publications

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“…Consolidation curves which are obtained from onedimensional compressibility tests (ASTM D2435-11) are shown in Figure 5 and 6 and the compressibility characteristics were listed in Table 4. There is no significant variation of the compression index and rebound index values with the increase of temperature and this conclusion is consistent with the findings of previous researchers [28,29]. Saturated hydraulic conductivity values were calculated for different confining pressure ranges as given in Table 5.…”

Section: Consolidationsupporting

confidence: 90%

“…Delage et al (2010) [28] observed that the compressibility of clays are independent with the variations of temperature. Kholghifard et al (2014) [29] performed the consolidation test on residual granitic soil with the temperatures of 27°C, 40°C and 60°C and concluded that the compression index does not depend on the temperature.…”

Section: Influence Of Temperature On Swell and Consolidationmentioning

confidence: 99%

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Characterization of Sand and Zeolite Stabilized Expansive Soil as Landfill Liner Material under Environmental and Climatic Effects

Öncü

Bilsel

2020

E3S Web Conf.

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This study focusses on the assessment of sand stabilized expansive soil as possible landfill liner materials to be utilized in a semi-arid area. Zeolite was also used as an alternative material to sand, mixing it with the expansive soil forming a stable structure with improved properties. Durability analysis of expansive soil-sand (NS) and expansive soil-zeolite (NZ) mixtures was studied to investigate the climatic and environmental effects on the sustainability of the proposed materials. The climatic effect is studied in terms of cyclic swell-shrinking and the environmental effect, mainly due to temperature elevations in the landfills, is studied in swell-compressibility tests. Cyclic swell-shrink tests and temperature variations (25°C, 40°C and 60°C) were applied on 28-day cured samples of NS and NZ mixtures in order to evaluate their resistance to climatic and environmental changes. Experimental findings showed that swelling potential and axial shrinkage were reduced with the increasing of wetting-drying cycles of both NS and NZ samples. The biggest variation of swell potential and axial shrinkage occurred at 7th cycle for NS (28-d) and 8th cycle for NZ (28-d) soil specimens. Primary swell percentage decreased with the increase of temperature in NS group, whereas, a reverse behavior was observed in NZ group.

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Section: Consolidationsupporting

confidence: 90%

Section: Influence Of Temperature On Swell and Consolidationmentioning

confidence: 99%

Characterization of Sand and Zeolite Stabilized Expansive Soil as Landfill Liner Material under Environmental and Climatic Effects

Öncü

Bilsel

2020

E3S Web Conf.

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“…This collapse potential increased in natural soil from 1.75 to 7.35% after two D-W cycles, and the degree of collapse transformed from mild to severe disorders [ 23 ]. However, the experimental results obtained by Kholghifard et al [ 25 ] and Rao and Revanasiddappa [ 13 ] showed the opposite, that is, the collapse potential decreased when the number of D-W cycles increased. The authors concluded that the maximum stress resulting in a higher collapse potential Cp was 200 kPa.…”

Section: Introductionmentioning

confidence: 98%

Impact of drying-wetting cycles on shear properties, suction, and collapse of sebkha soils

Hafhouf¹,

Abbèche²

2023

Heliyon

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“…Although the LC curve has been obtained for several hydraulic models, the effect of hydraulic hysteresis on this curve is not understood completely. Kholghifard et al [8,9] found that drying and wetting phenomena significantly affect collapsibility behavior of residual granite soils.…”

Section: Introductionmentioning

confidence: 99%

Effective Stress and Compressibility of Unsaturated Clayey Soil under Drying and Wetting Cycles

Kholghifard

2020

Period. Polytech. Civil Eng.

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Naturally, soil moisture reduces during dry seasons when the soil is in drying state; while it increases during wet seasons when the soil is in wetting state. Previous studies have shown that for an unsaturated soil sample, soil-water characteristic curves (SWCCs) do not match in wetting and drying paths. The differences between wetting and drying paths are called the hydraulic hysteresis. The hydraulic hysteresis plays an important role in mechanical properties of soil such as shear strength, volume change, and settlement. The objective of this research is to study the effects of drying and wetting on the effective stress and compressibility of unsaturated clayey fine-grained soils. To this end, saturated and unsaturated triaxial tests were performed on the soil samples under various normal mean stresses, and matrix suctions in drying and wetting paths. It was found that soil samples bear higher levels of effective stress in the drying path than the wetting path under a same level of suction. The attained values of effective stress parameter (χ) showed that the Bishop’s effective stress parameter (χ = Sr) is not properly applicable for the clayey soil. Moreover, the resulting loading-collapse curve (LC) revealed that the effective pre-consolidation pressure in the drying and wetting stages changed even with same degrees of matrix suction.

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Collapse/Swell Potential of Residual Laterite Soil Due to Wetting and Drying-wetting Cycles

Cited by 20 publications

References 4 publications

Characterization of Sand and Zeolite Stabilized Expansive Soil as Landfill Liner Material under Environmental and Climatic Effects

Characterization of Sand and Zeolite Stabilized Expansive Soil as Landfill Liner Material under Environmental and Climatic Effects

Impact of drying-wetting cycles on shear properties, suction, and collapse of sebkha soils

Effective Stress and Compressibility of Unsaturated Clayey Soil under Drying and Wetting Cycles

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