Shear Load Tests on Stone Columns With and Without Geosynthetic Encasement

Murugesan, S.; Rajagopal, K.

doi:10.1520/gtj101219

Cited by 34 publications

(8 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So, reinforced stone column with geosynthetic which limits lateral spreading and compression decrease the bulging (show in Fig. 3c) (Hong et al 2016;Murugesan et al 2009;Pandey et al 2020;Pandey et al 2022). With increasing the stiffness of encasement, the bulging can be reduced.…”

Section: Failure Mechanismsmentioning

confidence: 99%

“…It is considered to be both economical and environment-friendly method. In addition to the simplicity of construction, it is one of the advantages for using stone columns that researches had proved that the stone column has high performance in reducing consolidation and increasing bearing capacity Sharma et al (2014a); Almeida et al (2013); Dash et al (2013b); Elsawy et al (2013); Mohapatra et al (2016); Murugesan et al (2009); Yoo et al (2010); Yoo (2012); Zhang et al (2012)…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Soil Stabilization Using Stone Columns Technique

Foda

AbdelKader

Ibrahim

2023

Delta University Scientific Journal

View full text Add to dashboard Cite

Soft clay soils are in many coastal areas, these soils generally have high compressibility and don't provide required bearing capacity. Various techniques are used to improve these soils. The stone column technique has been successfully applied for the ground improvement. A stone columns technique is one of the soil stabilization methods that is used to increase strength, decrease the compressibility of soft and loose fine graded soils, accelerate a consolidation effect, and reduce the liquefaction potential of soils. They are mainly used for stabilization soft soil such as soft clays, silts, and silty sand. Several research has been conducted on the behavior and performance of stone columns with various materials utilized as column filler replacing the normal aggregate. This paper will review extensively on previously conducted research on some of the materials used as stone column backfill materials, its suitability, and the effectiveness as a substitute for regular aggregates in soft soil improvement works. This paper also discusses the techniques and methods of construction of stone columns. The bearing capacity of stone columns, and a combination of both methods in reinforced and unreinforced modes are presented using scaled physical models. The effect of various diameters with various depths in ground also reviewed. Results show that using stone column improves bearing capacity of soft soils and decreasing settlement. Using geotextile as stonecolumn encasement increases the efficiency of stone columns significantly. Finally, some guidance and recommendations are provided on parameter selection for the study of stone columns.

show abstract

Section: Failure Mechanismsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Review of Soil Stabilization Using Stone Columns Technique

Foda

AbdelKader

Ibrahim

2023

Delta University Scientific Journal

View full text Add to dashboard Cite

show abstract

“…To reduce this bulging effect, encasement is provided with suitable geosynthetic material to provide additional lateral confinement [15][16][17][18][19]. The introduction of geosynthetics in SCs reduces the settlement of the soil by 61% when used in stabilizing soft clays [19].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Encased Stone Column with Conventional Column for Varied Parameters through Experimental and Numerical Investigations

S. V.,

James,

Pavithra

et al. 2023

Advances in Civil Engineering

View full text Add to dashboard Cite

Installation of stone columns is a widely used stabilization method in improving the characteristics of soft clays. In this study, laboratory tests were conducted to understand the influence of column number, spacing and encasement on the load-carrying capacity of the modified soil. Unit cell concept is adopted for column diameters of 25.4 and 31.75 mm, one and two numbers of columns and spacings of 50, 70, and 90 mm under the conditions of with and without encasement. In addition to the laboratory study, finite element analysis was also done for similar parameters to understand the modified soil’s settlement characteristics and stress concentration ratio. Based on the analysis, it is understood that the load-carrying capacity increases with number of columns and spacing. Considering the influence of encasement, larger diameter columns showed a more significant increase in the load-carrying capacity when compared to the smaller diameter columns.

show abstract

“…Soil reinforcement using stone columns and geosynthetics has been widely used as an important method of soil reinforcement. There have been a wide number of studies based on analytical [3][4][5][6][7], experimental [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23], and numerical [7,19,21,[23][24][25][26][27] analyses on soil reinforcement. There are also various state-of-the-art studies which signify the need for such types of analyses [28][29][30][31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Horizontally Layered and Vertically Encased Geosynthetic Reinforced Stone Column: An Experimental Analysis

Srijan

Gupta

2023

Applied Sciences

View full text Add to dashboard Cite

Because of the smaller confinement of the neighbouring soil in very weak soils, the carrying capacity of stone columns may not substantially increase. Geosynthetics can be used to reinforce columns by employing vertical encasement or horizontal layers. In the present study, large-scale laboratory investigations were carried out to evaluate the efficacy of vertical encasement and horizontal layering geosynthetics on the performance behaviour of soft clay. A series of tests were carried out for a horizontal layering of a geotextile with an equal distance throughout the height of the column (the total height of the column is ‘L’); horizontal layering over only the top half (i.e., 0.5 L from the head of the considered column); and horizontal layering over only the bottom half of the column (0.5 L from the centre to the foot of the column). Tests were also carried out for vertical encasement in the form of vertically encased stone columns (VESCs) that were employed for various lengths of encasement (i.e., L, 0.75 L, 0.5 L, 0.25 L). The tests were conducted for three different diameters of stone columns, i.e., 50 mm, 75 mm, and 100 mm. As per the findings, the utilisation of horizontal and vertical reinforcing layers enhances the carrying capability of stone columns. Moreover, because of their interlocking and frictional actions with the aggregates of stone columns, the layering decreases the lateral bulging of the considered stone columns. A comparison was performed to find the effectiveness of the horizontal and vertical types of reinforcement, and it was observed that VESCs with full-length encasement and a geotextile with a higher tensile strength for a 100 mm diameter of the stone column were the most desirable arrangements among all.

show abstract

Shear Load Tests on Stone Columns With and Without Geosynthetic Encasement

Cited by 34 publications

References 8 publications

A Review of Soil Stabilization Using Stone Columns Technique

A Review of Soil Stabilization Using Stone Columns Technique

Comparison of Encased Stone Column with Conventional Column for Varied Parameters through Experimental and Numerical Investigations

Horizontally Layered and Vertically Encased Geosynthetic Reinforced Stone Column: An Experimental Analysis

Contact Info

Product

Resources

About