Sustainable Slope Stabilisation using Recycled Plastic Pins

Hossain, Sahadat; Khan, Sadik; Kibria, Golam

doi:10.1201/9781315206202

Cited by 14 publications

(7 citation statements)

References 35 publications

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“…The effect of embankment height, RPP sizes, and spacings on the settlement of the foundation soil were evaluated from the parametric study. For slope stabilization or ground improvement projects, RPPs are often installed at a spacing of 0.9 m ( 10 , 31 ). A 0.6 m to 0.9 m spacing can be considered for embankment design over soft soil ( 2 ).…”

Section: Resultsmentioning

confidence: 99%

“…Recycled plastics and other waste represent the majority of materials used to make RPPs (14,16). To make a single RPP of 3 m 3 100 cm 2 (length 3 area), approximately 600 recycled water/soda bottles are used (10). Therefore, utilizing RPP gives recycled plastics an additional market and reduces the plastic waste volume going to landfills (12,17).…”

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confidence: 99%

“…A new method for improving the soft ground is recycled plastic pin (RPP). As a sustainable solution for highway slope stabilization, RPPs were first applied in Missouri and Iowa ( 10 ). Many states of the U.S.A. are now utilizing RPP as a cost-effective solution for stabilizing slopes ( 10 , 11 ).…”

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confidence: 99%

“…As a sustainable solution for highway slope stabilization, RPPs were first applied in Missouri and Iowa ( 10 ). Many states of the U.S.A. are now utilizing RPP as a cost-effective solution for stabilizing slopes ( 10 , 11 ). RPP could alternatively be used in place of piles to increase soil stiffness to improve bearing capacity ( 12 , 13 ).…”

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confidence: 99%

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Numerical Study of Recycled-Plastic-Pin- and Geosynthetic-Platform-Supported Embankment over Soft Soil

Islam

Hossain

Badhon

et al. 2022

Transportation Research Record

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Embankment construction over soft soils is extremely challenging because of excessive settlement of the soil and the potential for bearing failure. Many of the available conventional methods for solving these problems require a tremendous amount of time and resources. Researchers are therefore striving to create a sustainable alternative to conventional practices. Utilizing recycled plastic pins (RPP) in conjunction with geosynthetics is a novel approach to improve soft foundation soil. This study uses finite element analysis to evaluate the effectiveness of RPP and geosynthetic platform for improving soft foundation soil. PLAXIS 2D software was used for the numerical analysis. Field measurements were used to calibrate the model for settlement and pressure variations. The performance of the RPP-supported embankment was evaluated with maximum consolidation settlement, differential settlement, and soil arching effect. Furthermore, a comprehensive parametric study was carried out to investigate the influence of RPP size and spacing, load transfer platform, stiffness of geosynthetics, and shear strength of embankment fill. It was observed that the load efficacy increases, and the differential settlement efficacy decreases with the increase of embankment load. The settlement improvement factor is found negligible for the values of area ratio inverse higher than 30. The cohesion rather than the friction angle of embankment fill was found more influential in transferring the embankment load to RPPs. Furthermore, the maximum settlement decreases, and maximum tension in geosynthetics increases with the increase of geosynthetic stiffness.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Numerical Study of Recycled-Plastic-Pin- and Geosynthetic-Platform-Supported Embankment over Soft Soil

Islam

Hossain

Badhon

et al. 2022

Transportation Research Record

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“…Accordingly, various soil strengths were grouped into five distinct soil types for cohesionless soils (17). So, based on the immediate response, the soil parameters are grouped into five categories, from soft to stiff.…”

Section: Grouping Of Soilsmentioning

confidence: 99%

Performance-Based Design Method for Multiple Helices of Helical Pile in Cohesionless Soil

Shuman

Khan

Amini

2022

Transportation Research Record: Journal of the Transportation R

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Multiple helices are being used frequently in helical pile applications nowadays. This paper presents multiple helices on simplified field design charts for small diameter helical piles that relate service compressive load and soil parameters as a group with the pile parameters. This study conducts an extensive three-dimensional nonlinear finite element analysis (FEA) study on multiple helices piles using the FEA program PLAXIS to evaluate helices’ performance subjected to axial compressive loads. A calibrated and verified numerical model uses full-scale load testing data of multiple helices from practical experience. This paper compiled numerical results from 495 models to propose an extension of the chart-based design. Here, the optimized combination of multiple helices will be the output of the design chart for soil type, service load, and allowable displacement as input. At the end of this paper, the design charts for double and triple helices are validated for cohesionless soil. The correlation square, R2, ranges from 0.69 to 0.86 for cohesionless soil. The mean Qc/ Qm is 0.90 for double helices and 1.04 for triple helices. Preliminary evaluation suggests that the method performs well. The authors believe that this study will permit engineers and state agencies to better understand the behavior of multiple helices, resulting in a more resilient approach in designing small diameter helical piles for a compressive load.

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2022

The Waste Crisis

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Sustainable Slope Stabilisation using Recycled Plastic Pins

Cited by 14 publications

References 35 publications

Numerical Study of Recycled-Plastic-Pin- and Geosynthetic-Platform-Supported Embankment over Soft Soil

Numerical Study of Recycled-Plastic-Pin- and Geosynthetic-Platform-Supported Embankment over Soft Soil

Performance-Based Design Method for Multiple Helices of Helical Pile in Cohesionless Soil

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