A Review of Road Embankment Stability on Soft Ground: Problems and Future Perspective

Mamat, Rufaizal Che; Kasa, Anuar; Razali, Siti Fatin Mohd

doi:10.31436/iiumej.v21i1.996

Cited by 15 publications

(5 citation statements)

References 109 publications

(138 reference statements)

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“…They are also highly compressible, plastic, and sensitive; they have low shear strength and permeability and are susceptible to erosion. Following construction, these characteristics will result in high settlement and low bearing capacity [21]. Before it can be used in construction, clay soil needs to be treated and improved [22].…”

Section: Soft Soilmentioning

confidence: 99%

Influencing the Efficacy of Widespread Use of Ionic Soil Stabilization Techniques for Improving Expansive Clay Soil Properties

Ineza¹,

Jie²

2022

JCCEE

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Background: Geotechnical engineers working on the ground face a common obstacle of unsuitable soil. Expansive soil is one of the soils vulnerable to high loads and unstable. Properties such as high permeability, low bearing capacity, compression, swelling and shrinkage behavior, low strength and stiffness are all characteristics of an expanding soil. Expansive soil is weaker than other soil types due to these characteristics. Objective: This study aimed to review the efficacy of the widespread use of ionic soil stabilization techniques for improving expansive clay soil properties by using different dosage levels that affect the properties of expansive clay soil. Results: expansive soil's high sulfate content, experiences swelling and heaving when stabilized with cement, lime, and fly flash. Engineers developed a new stabilizer called ionic soil stabilization to address this issue, improving strength and stiffness while reducing expansive soil permeability, compressibility, swelling, and shrinkage. Conclusion: Ionic soil stabilizer is preferred for improving clay soil because of its high efficiency and environmentally friendly stabilizer material, and low cost.

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Section: Soft Soilmentioning

confidence: 99%

Influencing the Efficacy of Widespread Use of Ionic Soil Stabilization Techniques for Improving Expansive Clay Soil Properties

Ineza¹,

Jie²

2022

JCCEE

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“…This conventional model has two different designs which are embankment with surcharge and embankment without surcharge. Table 1 shows the soil parameters obtained from Chik et al (2013) from the East Coast Expressway project, while Table 2 shows the parameters of reinforced material using geotextile material obtained from Mamat et al (2021). In addition, table 3 shows the EPS parameter used in the FEM analysis obtained from Khan & Meguid (2021).…”

Section: Geometry and Materials Properties Of Proposed Modelmentioning

confidence: 99%

Numerical Modelling of Soft Soil Improvement Using Expanded Polystyrene Geofoam for Road Embankment

Zianal¹,

Yusof²,

Madun³

et al. 2022

J-SUE

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Soft soil brings abundant engineering issues due to low bearing capacity and shear strength. A comprehensive study of soft ground needs to be reviewed and identified before construction can start. Various techniques can be used to improve the soil. However, this study focuses on using material namely expanded polystyrene. The geotextile is embedded with expanded polystyrene to strengthen the soil condition. This study adopted the soil parameters from East Coast Expressway. There are two models in this study, which are earth embankment and EPS embankment. The settlement of the earth embankment is compared with the EPS embankment after construction. The Mohr-Coulomb parameters are used to model the soft soil and embankments, while the linear elastic parameters were adopted to model the EPS and geotextile. This study produced two embankment models, the conventional embankment models with and without surcharge. The second model is an EPS embankment with various densities (22 kg/m3, 29 kg/m3, and 39 kg/m3). The settlement is recorded for ten years after the embankment construction was completed. The difference settlement value for the conventionalmodel is 28mm. The settlement value for EPS 22 is 3.18mm, EPS 29 is 2.06mm, and EPS 39 is 1.51mm. For the geotextile embedded in EPS, the settlement for EPS 22 is 3.17mm, EPS 29 is 2.04mm, and EPS 39 is 1.49mmrespectively. Since EPS uses three different densities, from the prediction of PLAXIS 2D, the higher density gives the lower value of the settlement. However, when the geotextile is embedded with EPS, there is no significant difference in settlement behaviour. In conclusion, the model with a surcharge gives a lower settlement than themodel without a surcharge. But the expanded polystyrene block is the best model to reduce the settlement compared with the conventional model with a surcharge. Different densities of EPS resulted in different settlement value, and EPS 39 gives the lowest settlement value. In terms of the geotextile embedded with EPS, it does not give a significant change in settlement.

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“…Landslides are a disaster that is primarily due to natural factors such as an earthquake and extreme rainfall, as well as sudden downward soil slopes under various conditions and geomorphic features [1]- [6]. However, this phenomenon is limited to natural embankments and artificial construction [7], [8]. Several previous studies [9]- [13] have been conducted on landslides associated with embankments in different countries to determine causes to provide long-term solutions.…”

Section: Introductionmentioning

confidence: 99%

Causes of Landslides in Road Embankment with Retaining Wall and Pile Foundation: A Case Study of National Road Project in Porong-Sidoarjo, Indonesia

Sari¹,

Mochtar²

2023

Int. J. Adv. Sci. Eng. Inf. Technol.

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This study was conducted to determine the cause of landslides in the toll road embankment of the national road project in the Porong-Sidoarjo area. The landslide was observed only on the north side of the embankment, with a maximum height of 7.8 meters from the subgrade despite the reinforcement with a retaining wall and pile foundation. The land shift and subsidence on the Northside led to a decline in the embankment elevation and the displacement to a maximum depth of 3.50 m. Back analysis through the limit equilibrium method was used to determine the strength of the existing reinforcement against the landslide. The results showed that the heavy rain was indeed one of the causes of landslides in the location, while the main cause was the depth of soft soil, much deeper than those in the surrounding locations. This is why a severe landslide was recorded on one side of the embankment. Moreover, the existing anti-slide pile reinforcement was discovered not to be sufficient due to its shallower length compared to the area of the landslide, and this was associated with the absence of overall stability analysis in this design. The findings showed that it is necessary to conduct a comparative study between the overall stability and the active and passive forces analyses for the soil to produce the safest design required to avoid landslides.

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A Review of Road Embankment Stability on Soft Ground: Problems and Future Perspective

Cited by 15 publications

References 109 publications

Influencing the Efficacy of Widespread Use of Ionic Soil Stabilization Techniques for Improving Expansive Clay Soil Properties

Influencing the Efficacy of Widespread Use of Ionic Soil Stabilization Techniques for Improving Expansive Clay Soil Properties

Numerical Modelling of Soft Soil Improvement Using Expanded Polystyrene Geofoam for Road Embankment

Causes of Landslides in Road Embankment with Retaining Wall and Pile Foundation: A Case Study of National Road Project in Porong-Sidoarjo, Indonesia

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