Experimental studies on single reinforced stone columns with various positions of geotextile

Bonab, S Bazzazian; Lajevardi, Seyed Hamid; Saba, Hamid Reza; Ghalandarzadeh, Abbas; Mirhosseini, Seyed Mohammad

doi:10.1007/s41062-020-00349-0

Cited by 8 publications

(3 citation statements)

References 43 publications

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“…A circular steel plate with a diameter of 100 mm, 80 mm, and 60 mm was used for cinder gravel columns with diameters of 50 mm, 40 mm, and 30 mm. As stated by the authors in [52,65], the failure zone is spread over a radial span of approximately 1.5 times the diameter of the column. Te dimension (diameter) of the test tank (container) was selected in such a way that the corresponding stress could remain minimal around the container face.…”

Section: Experimental Test Procedures Of the Cinder Gravelmentioning

confidence: 88%

“…Geotextiles efectively allow water to easily pass through while fltering out fne materials that can weaken the soil. By doing so, geotextiles perform well in enhancing the reinforcement role which in turn enhances the frictional resistance of the soft clay [52][53][54]. Te physical and mechanical properties of the geotextile material are summarized in Table 4.…”

Section: Nonwoven Geotextilementioning

confidence: 99%

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Evaluating the Effectiveness of Nonwoven Geotextile-Encased Cinder Gravel Column in Improving Load-Bearing and Deformation Characteristics of Soft Clay

Tefera

Melese

Bafena

et al. 2023

Advances in Materials Science and Engineering

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Application of vertically installed columnar materials made of natural gravels or crushed aggregate is one of the commonly implemented practices to improve the performance of soft clay grounds under footing load. Alternative materials like cinder gravel also plays a reinforcing role when blended with soft clay. However, information on the precise extent to which a vertically installed cinder gravel column is effective in improving the properties of a clay foundation and its potential response to the permanently applied footing load has not been well documented in the literature. Hence, the current study specifically aimed at evaluating the effectiveness of geotextile-encased cinder gravel column in improving deformation and bearing capacity of soft clay ground. The experimental model which considered installation of a single geotextile-encased cinder gravel column into soft clay was considered. A cylindrical steel container was used in designing the experimental test. The container was filled with clay soil and the cinder gravel column was vertically installed through a replacement method. Finding of the study revealed that ultimate load-bearing capacity of the soft clay foundation after being reinforced with conventional cinder gravel was 1.85 times that of the untreated soft clay soil. The load-carrying capacity of the clay soil decreased with increment in diameter of the column whereas it is directly related to the volume replacement ratio. With regard to directional improvement, the vertical reinforcement performs better than the horizontal geotextile strips in cinder gravel column from bearing capacity improvement view point. In lessening settlement, however, application of horizontal geotextile discs at spacing ranging between half- and full-column diameter overweighs performance of the vertical encasement. In summary, application of geotextile encasement to the top 75% of the clay thickness is sufficient to come up with optimum improvement in bearing capacity and encasing the entire thickness is not necessarily required.

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Section: Experimental Test Procedures Of the Cinder Gravelmentioning

confidence: 88%

Section: Nonwoven Geotextilementioning

confidence: 99%

Evaluating the Effectiveness of Nonwoven Geotextile-Encased Cinder Gravel Column in Improving Load-Bearing and Deformation Characteristics of Soft Clay

Tefera

Melese

Bafena

et al. 2023

Advances in Materials Science and Engineering

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“…Although gravel pile reinforcement technology in pile foundation treatment can improve the bearing capacity of soft soil foundations, reduce settlement, enhance foundation stability, and improve drainage [1][2][3][4][5][6], under the conditions of soft soil foundations, due to the poor radial confinement of soft soil, sufficient passive resistance cannot be provided, thereby reducing the bearing capacity of the piles. To address this issue, gravel piles can be wrapped with geosynthetic materials that have very high axial stiffness to form geo-encasement stone column.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Bearing Deformation Characteristics of Geo-encasement Stone Column under Embankment Load

2024

IJETC

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This paper uses FLAC3D software to establish a numerical model of unit cells below the embankment, studying the characteristics of pile-soil settlement and settlement difference under different parameters. The results show that the cohesion of the road embankment has a higher impact on the pile-soil settlement difference compared to the road embankment load and the friction angle of the embankment. When the cohesiveness of the road embankment is less than 10kPa, increasing the cohesiveness can reduce the pile-soil settlement difference; but when the cohesion of the road embankment is greater than 10 kPa, continuing to increase the cohesiveness has a negligible effect on reducing the pile-soil settlement. When the friction angle of the embankment is below 30°, increasing the friction angle of the embankment can significantly reduce the pile-soil settlement difference. However, when the friction angle is above 30°, continuing to raise the embankment friction angle results in minimal changes in the pile-soil settlement value and the pile-soil settlement difference.

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Banana–Plantain Fiber Limited Life Geotextiles (PFLLGs): Design and Characterization

et al. 2023

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Experimental studies on single reinforced stone columns with various positions of geotextile

Cited by 8 publications

References 43 publications

Evaluating the Effectiveness of Nonwoven Geotextile-Encased Cinder Gravel Column in Improving Load-Bearing and Deformation Characteristics of Soft Clay

Evaluating the Effectiveness of Nonwoven Geotextile-Encased Cinder Gravel Column in Improving Load-Bearing and Deformation Characteristics of Soft Clay

Numerical Study of Bearing Deformation Characteristics of Geo-encasement Stone Column under Embankment Load

Banana–Plantain Fiber Limited Life Geotextiles (PFLLGs): Design and Characterization

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