Numerical Investigation of Slope Stabilization Using Recycled Plastic Pins in Yazoo Clay

Khan, Mohammad Sadik; Nobahar, Masoud; Ivoke, John

doi:10.3390/infrastructures6030047

Cited by 3 publications

(4 citation statements)

References 15 publications

(26 reference statements)

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“…This strategy addresses several critical aspects related to sustainability, including the reduction in the demand for virgin materials, the minimization of solid waste generation, and the decrease in carbon dioxide emissions associated with the manufacturing of new polymeric materials [ 13 , 14 , 15 ]. Furthermore, the use of recycled materials in geotechnical engineering is noted for its cost-effectiveness, as it allows the use of inferior quality soils that would otherwise require costly improvement or replacement processes [ 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Effectiveness of Geogrids Manufactured from Recycled Plastics for Slope Stabilization—A Case Study

Vicuña,

Jaramillo-Fierro,

Cuenca

et al. 2024

Polymers

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This study aimed to investigate the sustainable use of recycled plastics, specifically polypropylene (PP) and high-density polyethylene (HDPE), in the manufacture of geogrids for geotechnical and civil engineering applications. Plastics were collected from a recycling center, specifically targeting containers used for food, cleaning products, and other domestic packaging items. These plastics were sorted according to the Möbius triangle classification system, with HDPE (#2) and PP (#5) being the primary categories of interest. The research methodologically evaluates the mechanical properties of PP/HDPE (0/100, 25/75, 50/50, 75/25 and 100/0% w/w) composites through tensile and flexural tests, exploring various compositions and configurations of geogrids. The results highlight the superiority of pure recycled HDPE processed into 1.3 mm thick laminated yarns and hot air welded for 20 to 30 s, exhibiting a deformation exceeding 60% in comparison to the PP/HDPE composites. Through SolidWorks® Simulation, it was shown that the adoption of a trigonal geogrid geometry optimizes force distribution and tensile strength, significantly improving slope stabilization efficiency. Based on the results obtained, a laboratory-scale prototype geogrid was developed using an extrusion process. The results underscore the importance of careful composite design and yarn configuration selection to achieve the desired mechanical properties and performance in geogrid applications. It emphasizes the potential of recycled plastics as a viable and environmentally friendly solution for stabilizing slopes, contributing to the reduction in plastic waste and promoting sustainable construction practices.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the Effectiveness of Geogrids Manufactured from Recycled Plastics for Slope Stabilization—A Case Study

Vicuña,

Jaramillo-Fierro,

Cuenca

et al. 2024

Polymers

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“…These authors proposed 2D experimental and numerical models by integrating seepage flow to determine the critical slope angle to approximate the threshold of a sudden failure. In fact, different influencing factors affect the slope stability, [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…For this application, previous research showed that the soil total unit weight (γ) has a limited influence on the failure load of the ground slope, [1][2][3][4][6][7][8][9][10][12][13][14][15]. In a recent study, Karoui et al, 2020, [7] investigated the stability of a deposited phosphogypsum embankment by finite element method.…”

Section: Introductionmentioning

confidence: 99%

Stability of a Compacted Sand Slope Model Subject to Crest Load

et al. 2023

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Studying the stability of slopes is of great interest since it is associated to various geotechnical applications, e.g., access embankments and landslide mitigation. This paper describes the research conducted to determine the failure load applied at the top of excavations in sandy soils during the construction of deep digs without the use of retaining systems. An experimental program was performed to measure the failure load of ten laboratory-compacted sand slope models that were constructed using different slope angle values and different locations for the applied loading, which consisted of an imposed uniform rate of vertical displacement at the top of the slope. Then, a three-dimensional (3D) numerical model of the laboratory tests was developed to simulate the observed behavior during the experiments by the Plaxis 3D code. The Mohr–Coulomb (MC) and hardening soil (HS) models were used to describe the behavior of the compacted sand. The results showed that the 3D numerical simulations based on the MC model were able to predict the measured failure load within a relative difference of less than 11% for nine tested slope models, while the HS model was better in predicting the measured failure load (a relative difference of 3.5%) for only one experimental setup when the slope angle was equal to 35°. Furthermore, analytical prediction of the failure load using the yield design theory (YDT) permitted the validation of the log-spiral curve describing the observed failure surface for the tested sand slope models.

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“…This Special Issue published five original research on the latest developments and challenges in the field of transportation geomaterials, which will ensure cost-effective, eco-friendly, and sustainable transportation infrastructures. Khan et al [6] investigated the effectiveness of recycled plastic pins (RPPs) in slopes constructed with high plastic clay soil (CH), using the finite element method (FEM). The FEM analysis was performed using the PLAXIS 2D software.…”

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confidence: 99%