Behavior of Compacted Lime — (Well-graded) Soil columns: Large scale tests and numerical modelling

Malekpoor, Mohammad Reza; Poorebrahim, Gholamreza

doi:10.1007/s12205-013-1341-6

Cited by 7 publications

(8 citation statements)

References 32 publications

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“…The load carrying capacity is maximum at L/D ratio of 4 and decreases with increase in L/D ratio from 5 to 7. A similar type of response has been reported for compacted lime soil columns and stone columns by [2,26]. The bearing capacity failures were observed beyond critical column length (L) of 4D which decreases load carrying capacity of treated soil, so increasing column length beyond critical column length is counterproductive.…”

Section: Soil Samples Treated With Single Lime Column (Entire Area Loaded)supporting

confidence: 65%

“…Wong [25] worked on various case studies and theoretical studies and concluded that lime columns/piles increase strength and stiffness of in situ soils and the resulting increase in shear strength with lime columns was higher than the theoretical prediction. Malekpoor and Poorebrahim [26] concluded that compacted lime-well graded soil columns reduces the settlement and increases the load carrying capacity of the surrounding soil. It was also concluded that the variations in stiffness become negligible with column diameters greater than 100 mm so the results can be extrapolate for predicting the behavior of full size columns.…”

Section: Introductionmentioning

confidence: 99%

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Experimental evaluation of lime column as a ground improvement method in soft soils

et al. 2021

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Lime column (LC) is an effective method for ground improvement which causes reduction in settlement and enhancement in bearing capacity of soft soils, subsequently resulting in economical foundations. This study investigates the effects of LC on soft soil with the help of laboratory tests. Firstly, basic laboratory tests are performed on natural soil followed by load deformation tests on untreated and LC treated soils. LC effects on natural soil are studied by changing various parameters like shear strength of soil (54 kPa, 32 kPa, 14 kPa), slenderness ratio (4, 5.5, and 7) and spacing to diameter ratio (2, 3). Experimental results show that LC significantly increases load carrying capacity and stiffness for soils having higher shear strength. For soil samples of 54 kPa and 32 kPa, the load carrying capacity increases by 48 and 21% respectively whereas 75% increase in average stiffness (β = 1.75) is observed. However, LC are found to be ineffective at very low shear strength of 14 kPa. In case of group LC, increasing column spacing from 2 to 3D (D: diameter of LC) significantly decreases load carrying capacity of treated soil. It is also observed that increase in LC slenderness ratio causes a decrease in ultimate load carrying capacity. Article highlights• Lime columns can be used to increase load carrying capacity of soft soils, especially in soils having relatively higher shear strength. • In case of group columns, the spacing should not be more than two times the diameter of the column.• The length of the lime columns should not be more than four times the diameter for better results.

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Section: Soil Samples Treated With Single Lime Column (Entire Area Loaded)supporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of lime column as a ground improvement method in soft soils

et al. 2021

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“…The type and size of the SC materials play an important role in governing the load-settlement behaviour of the SC stone since they affect the strength parameters. The impact of using alternative materials to constructs SC's was appraised in several studies [14,25,28,38,50,53]. The stronger the material, the better the performance of the SC.…”

Section: Sc Materialsmentioning

confidence: 99%

The Experimental Design of Stone Columns' Modelling using Small-Scale Unit Cells: A Review

Almaliki¹,

Selamat²

2018

IJET

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This paper presents a review of the experimental design of the small-scale single stone column that adopts the unit cell concept. Materials and methods used in experiments along with their effects and implication have been appraised. The reviewed cases showed that clayey soils were often used to construct the host ground. Steel cylindrical tanks were used with diameters ranging from 15 to 60 cm and heights ranging from 20 to 120 cm. For such scale, the used stone size is 2 to 10 mm. Plates load test can be carried out on the entire tank or on the stone column. The load has been imposed at a constant settlement rate of 1 to 1.25 mm/min in order to simulate the stage immediately after construction. The review shows that remoulding and replacement have been often practised for the construction of the host ground and the stone column, respectively.

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“…Liu et al [17] studied the thermal characteristics of the quicklime (CaO) energy pile thawing on the warm frozen soil surface and pointed out that the same life lime pile has different thawing effects on different types of frozen soil, and the expansion effect of the pile can increase the density of the soil around the quicklime pile to improve the strength of the ground. Malekpoor and Poorebrahim [18] carried out the experimental study on the functional characteristics of the lime pile in soft soil. Wang et al [19] studied the dynamic characteristics of lime-treated expansive soil and discussed the influence of different water contents, confining pressures, vibration frequencies, and other factors on the dynamic characteristics of the soil.…”

Section: Introductionmentioning

confidence: 99%

Study on the Hydro‐Thermal‐Mechanical Characteristics of the Lime‐Soil Compaction Pile in the Forming Process

Feng-chuan¹,

Dong

Yang³

et al. 2021

Advances in Materials Science and Engineering

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To study the effect of the lime-soil compaction pile on the collapsible loess foundation and the influence of water-heat-force characteristics on the soil during compaction, the field test of lime-soil compaction pile treatment of collapsible loess foundation is carried out. This paper monitors the process of soil temperature, water, and soil pressure change in the process of pile forming. According to the macroprocess and micromechanism of lime-soil compaction pile treatment of collapsible loess foundation, the qualitative law of water-heat-force change in the process of pile forming is obtained. Meanwhile, the influence of soil damage is introduced in the process of compaction expansion. The model of pore expansion under linear damage conditions in the plastic zone is established. The formula of radial stress distribution under damage conditions is given. The influence of different damage factors on the expansion process is analyzed.

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Behavior of Compacted Lime — (Well-graded) Soil columns: Large scale tests and numerical modelling

Cited by 7 publications

References 32 publications

Experimental evaluation of lime column as a ground improvement method in soft soils

Experimental evaluation of lime column as a ground improvement method in soft soils

The Experimental Design of Stone Columns' Modelling using Small-Scale Unit Cells: A Review

Study on the Hydro‐Thermal‐Mechanical Characteristics of the Lime‐Soil Compaction Pile in the Forming Process

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