A qualitative model study on the effect of geosynthetic foundation reinforcement in sand overlying very soft clay

Jones, Brendon R.; Jacobsz, S.W.; Rooy, J.L. Van

doi:10.17159/2309-8775/2016/v58n2a3

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…Therefore, sandy soil needs to be improved and reinforced [2][3][4]. Traditional methods of sand soil reinforcement mainly use waterfall sand, vibratory flushing, and rubble pile methods [5] Such hard protection measures can effectively reinforce sandy soils, but they are usually consumable, expensive and have high labor costs. Therefore, in recent years, choosing a more economical and effective reinforcement method has gradually become the focus of research by scholars at home and abroad.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Mechanical Performance and Micro-Structure Failure of Polymer-Fiber Reinforced Sand

Zhang,

Huang,

Song

et al. 2023

Polymers

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Natural sand has a loose and porous structure with low strength, and is prone to many geoengineering problems that cause huge losses. In this study, an organic polymer-polymer-fiber blend was used to improve the strength of sand. Using a series of laboratory and numerical simulation tests, researchers have investigated the microdamage behavior of an organic polymer and fiber-treated sand in various types of mechanical tests and explored the improvement mechanism. The results showed that the polymer- and fiber-treated sand enhanced the integrity and exhibited differential damage responses under different test conditions. The increase in polymer content induced uniform force transfer, leading to a wider range of particle motion and crack initiation, whereas the fibers adhered and confined the surrounding particles, inducing an arching force chain and dispersive/buckling cracking. Polymer- and fiber-treated sands increased their energy-carrying capacity and improved their energy release, which affected the damage characteristics. Organic polymers, fibers, and sand particles were wrapped around each other to form an effective interlocking structure, which enhances the integrity and mechanical properties of sand. This study provides novel ideas and methods in the polymer-fiber composite treatment of sand in the microscopic field.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Mechanical Performance and Micro-Structure Failure of Polymer-Fiber Reinforced Sand

Zhang,

Huang,

Song

et al. 2023

Polymers

View full text Add to dashboard Cite

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Increasing the Stability of the Sand Cushion by Prestressing the Reinforcing Layers of Geosynthetics

Shiranov¹,

Nevzorov²

2020

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The use of prestressing of geosynthetics allows accelerate their inclusion in work, reduce deformations and gaining bearing capacity of artificial foundation. The article presents results of research of two methods of construction reinforced sand cushions. In the first case, the effect of prestressing is achieved due to a certain order of layer-by-layer soil compaction of the cushion, in the second - by laying of the swellable material between the contours of the foundations. The experiments were carried out in a laboratory tank with a pneumatic loading device. There are three stamps united by a common frame on the surface of the cushion. To assess the stress-strain state of the soil foundation, the non-contact digital tracer imaging method was used. The experimental results are presented in the graphs form of the dependence of the stamp settlement on pressure and vector fields of particle movements. Modeling has confirmed the high efficiency of prestressing. The ultimate pressure on the soil foundation with two-layer horizontal reinforcement and prestressing of the reinforcing layers in the first method was 195 kPa, in the second method - 165 kPa, whereas in the absence of prestressing this value was 110 kPa. Foundation deformations also decreased significantly.

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A qualitative model study on the effect of geosynthetic foundation reinforcement in sand overlying very soft clay

Abstract: Jones BR, Jacobsz SW, Van Rooy JL. A qualitative model study on the effect of geosynthetic foundation reinforcement in sand overlying very soft clay.

Cited by 2 publications

References 6 publications

Numerical Investigation of Mechanical Performance and Micro-Structure Failure of Polymer-Fiber Reinforced Sand

Numerical Investigation of Mechanical Performance and Micro-Structure Failure of Polymer-Fiber Reinforced Sand

Increasing the Stability of the Sand Cushion by Prestressing the Reinforcing Layers of Geosynthetics

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