Numerical analysis of soft clay performance reinforced by geosynthetics encased stone columns

Nagy, Nabil M.

doi:10.1063/1.4825926

Cited by 3 publications

(4 citation statements)

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“…Thus, the signi cant increment in the percentage of shear strength can be considered substantial as the penetration of single and group-encapsulated bottom ash columns was increased. The smaller diameter of encased bottom ash columns shows a better performance compared to the bottom ash column with a bigger diameter, this is owing to the mobilization of the larger con ning stresses in the larger bottom ash columns which is coherent with the previous results obtained by Nagy (2013). Based on the study, the Hp which resulted to the highest shear strength are in the order of; G16100 (Hp = 1.0, S u = 14.02 kPa) < G1660 (Hp = 0.6, S u = 14.20 kPa) < G10100 (Hp = 1.0, S u = 15.97 kPa) < S10100 (Hp = 1.0, S u = 17.10 kPa) < G1680 (Hp = 0.8, S u = 17.33 kPa) < S1660 (Hp = 0.6, S u = 17.43 kPa) < S16100 (Hp = 1.0, S u = 18.02 kPa) < S1060 (Hp = 0.6, S u = 18.14 kPa) < G1060 (Hp = 0.6, S u = 18.46 kPa) < S1680 (Hp = 0.8, S u = 19.00 kPa) < G1080 (Hp = 0.8, S u = 19.46 kPa) < S1080 (Hp = 0.8, S u = 19.61 kPa).…”

Section: Effects Of Height Penetration Ratio (Hr) On the Shear Streng...supporting

confidence: 88%

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Utilization of bottom ash waste as a granular column to enhance the lateral load capacity of soft kaolin clay soil

Zaini

Hasan

Jusoh

2023

Environ Sci Pollut Res

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Ground improvement is an effective method of mitigation to improve problematic soils including soft kaolin clay soils.Implementation of industrial wastes such as bottom ash in ground improvement can be cost-effective and environment-friendly.There are several studies conducted on the granular column using the bottom ash column. However, only a few studies have reported ndings coherent with the statistical analysis. In this study, the lateral load capacity of bottom ash column-kaolin clay has been conducted. Coherently, the reinforced kaolin clay samples were tested via Particle Size Distribution, Atterberg limit test, Relative Density, Compaction test, Permeability test, Uncon ned Compression Test and Unconsolidated Undrained Triaxial Test with the single and group encapsulated bottom ash with the geotextile encasement and a prediction model was developed. The effect of a number of columns, column diameter, column height, area replacement ratio, height penetration ratio, height-diameter column ratio, volume replacement ratio and con ning pressures on the shear strength of the single and group of encapsulated bottom ash columns have been investigated. The ndings showed the effectiveness of using the bottom ash columns to enhance the shear strength of the soil up to 77.00%.

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Section: Effects Of Height Penetration Ratio (Hr) On the Shear Streng...supporting

confidence: 88%

“…The results obtained in the study were conformed with the outcomes obtained byHasan et. al., (2013),Nagy (2013) andRezaei et. al., (2022) as the studies agreed that the highest improvement of shear strength occurred at the critical length.…”

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confidence: 96%

Utilization of bottom ash waste as a granular column to enhance the lateral load capacity of soft kaolin clay soil

Zaini

Hasan

Jusoh

2023

Environ Sci Pollut Res

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“…One of the most important advantages of finite element package ABAQUS is its durability in the numerical approach for resolving soil nonlinearity [9][10][11][12]. So, in this study (ABAQUS/ CAE 2017) was used to investigate SC influence in improving weak soils.…”

Section: Numerical Analysismentioning

confidence: 99%

Enhancing airport runways performance using composite systems numerically using unit cell concept.

Abdelaziz,

Elshesheny,

Abdelmotaal

et al. 2023

J. Phys.: Conf. Ser.

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One of the problems, which would affect airport runways is the settlement of soil. Such settlement would be controlled by enhancing the performance of the soil underneath the airport runway. The composite system consists of graded stone-reinforced soil and reinforcing layers. This system is defined as stone column, which is widely used to improve weak soils as one of the soil stabilization methods due to its simple construction and economic cost. It is used to reduce settlement and enhance soil-bearing capacity. By using such technique, part of the high-compressibility and low-shear strength soil is replaced with coarse filler materials with high-shear strength and extremely low compressibility. In this study, a 3D numerical model of a unit cell is created to examine the impact of changing the controlling parameters in the model, i.e. spacing between columns (S), weak soil cohesion (c), and angle of internal friction for stone column material (φ). It was established that the use of stone columns improves the soil-bearing capacity and reduces settlement, strengthening the stability of airport runways. The efficiency of the system is improved by increasing the column material’s internal friction angle and the cohesion of the surrounding soil. The ultimate bearing capacity of soil without SC and SC-soil systems were 150 kPa, and 460 kPa, respectively, which illustrates that the bearing capacity was increased by 306.7%.

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confidence: 96%

Utilization of Bottom Ash Waste as Reinforced Columns in Improving the Characteristics of Soft Kaolin Clay

Zaini

Hasan

Jusoh

2022

Preprint

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Ground improvement is an effective method of mitigation to improve problematic soils including soft kaolin clay soils. Implementation of industrial wastes such as bottom ash in ground improvement can be cost-effective and environment-friendly. There are several studies conducted on the granular column using the bottom ash column. However, only a few studies have reported findings coherent with the statistical analysis. In this study, the lateral load capacity of bottom ash column-kaolin clay has been conducted. Coherently, the reinforced kaolin clay samples were tested via Particle Size Distribution, Atterberg limit test, Relative Density, Compaction test, Permeability test, Unconfined Compression Test and Unconsolidated Undrained Triaxial Test with the single and group encapsulated bottom ash with the geotextile encasement and a prediction model was developed. The effect of a number of columns, column diameter, column height, area replacement ratio, height penetration ratio, height-diameter column ratio, volume replacement ratio and confining pressures on the shear strength of the single and group of encapsulated bottom ash columns have been investigated. The findings showed the effectiveness of using the bottom ash columns to enhance the shear strength of the soil up to 77.00%.

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Numerical analysis of soft clay performance reinforced by geosynthetics encased stone columns

Cited by 3 publications

References 0 publications

Utilization of bottom ash waste as a granular column to enhance the lateral load capacity of soft kaolin clay soil

Utilization of bottom ash waste as a granular column to enhance the lateral load capacity of soft kaolin clay soil

Enhancing airport runways performance using composite systems numerically using unit cell concept.

Utilization of Bottom Ash Waste as Reinforced Columns in Improving the Characteristics of Soft Kaolin Clay

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