The experimental investigation of behaviour of expanded polystyrene (EPS)

Khalaj, Omid; Siabil, Seyed Mohammad Amin Ghotbi; Tafreshi, S.N. Moghaddas; Kepka, Miloslav; Kavalir, Tomas; Křížek, Michal; Jeníček, Štěpán

doi:10.1088/1757-899x/723/1/012014

Cited by 11 publications

(4 citation statements)

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“…1-Lightweight EPSG is produced in many unit weights ranging from 1.12 to 4.57 kN/m3). Hence, it is substantial in reducing stresses on underlying soils, structures, and utilities [12]. 2-Ease of Handling The EPSG can be shaped on-site to accommodate the existing requirements and services [13]…”

Section: Advantages Of Epsg As a Construction Materialsmentioning

confidence: 99%

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Decreasing Earth Thrust with EPS Geofoam

2023

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The basic function of retaining walls is to support soil backfill and water. This function has to be adequate under different conditions of loading; with permissible deformations. Researches are addressing the reduction of the exerted lateral earth thrust and water pressures to satisfy the adequacy in reasonable costs. Expanded polystyrene geofoam, EPSG, is the most popular material adopted to decrease lateral earth thrust on retaining walls. This paper presents an article review on researches of this aspect. Equations were proposed for reduction in lateral forces and overturning moments. Its aim is to optimize the design of 8.0 m gravity retaining wall with installation of EPSG.

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Section: Advantages Of Epsg As a Construction Materialsmentioning

confidence: 99%

“…Sandbags may be placed on top of the EPSG [13]. 4-Buoyancy EPSG as a closed-cell structure and lightweight, is buoyant [12]. 5-Limited water absorption because of its closed-cell structure [13].…”

Section: -Windmentioning

confidence: 99%

Decreasing Earth Thrust with EPS Geofoam

2023

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“…In this study, elasticity and plasticity were investigated, and initial moduli and tangent moduli were obtained, but no characteristics of densification were studied. Multiple researchers have developed correlations relating the initial modulus or the tangent modulus to density and strain rate [15,16] and through regression analysis [4,17]. In addition to that method, Akis [18] introduced artificial neural networks to predict the initial modulus and the compressive strength values at 1%, 5% and 10% strain, and both methods yield satisfactory results with a coefficient of correlation values greater than 0.901.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Compressive and Flexural Properties and Stacking Strength of Expanded Polystyrene Boxes: Experimental and Simulation Study

Jónsdóttir

Arason

et al. 2023

Applied Sciences

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Expanded polystyrene (EPS) boxes are used for the packaging of perishable and vulnerable goods during transportation; for instance, fresh fish fillets. It is important to minimize the weight and cost of the packaging materials while maximizing strength to avoid damage to the packaging and the product itself. EPS boxes have to withstand considerable loading, which arises due to rough handling and stacking during transport. This work focused on the compressive and flexural properties and stacking strength of 3 kg capacity EPS boxes with densities of 22 and 23 kg/m3, by combining experiments and simulation. Material properties were obtained from the compression test, and the behavior of EPS boxes under stacking load was investigated through both experiments and finite element simulations. The influences of density and different sample preparation methods on material properties and stacking strength were investigated. The results indicated that, with the density increasing by 1 kg/m3, the initial modulus rises 10–15% and the compressive strength increases by 7–8% in the compression test, while in the flexure test, the rupture stress increases by 3–7%. Additionally, an increase of around 2% was observed for the specimens cut with a hot wire compared to those cut with a table saw. However, because the failure mechanism for a box as a whole differs from that of small units in the compression and flexure tests, density has less of an impact on stacking strength. Finally, a good agreement was obtained between the simulation and stacking strength test results.

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“…The performance and durability of these vital substructures depend on their safe and proper design to preserve their safety and operation. One of the approved practical advantages of geosynthetics is their performance in stress attenuation on buried conduits and pipes; thus, this area has been investigated by many researchers [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Anil et al [2] studied the performance, strength, and energy absorption competency of EPS blocks over buried pipes against impact forces.…”

Section: Introductionmentioning

confidence: 99%

The Role of Expanded Polystyrene and Geocell in Enhancing the Behavior of Buried HDPE Pipes under Trench Loading Using Numerical Analyses

et al. 2020

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In recent years, much research has focused on the use of various materials for relieving and strengthening soil, e.g., steel reinforcing ribs, geosynthetics, geocell, waste tires, and expanded polystyrene (EPS). EPS is being used increasingly in geo-infrastructure, being a super-light material, to replace part of the soil and decrease the ground pressure on buried structures. This paper presents experimental and numerical analyses of the effectiveness of expanded polystyrene and geocell reinforcement for ameliorating the behavior of unpressurized buried pipes exposed to surface loading. A 3-D finite element method (FEM) model of soil, geofoam, geocell, and piping was generated in ABAQUS, and the model was verified by experimental analyses conducted at a laboratory. The results show that reinforcing the soil cover with geocell and geofoam has a substantial impact, decreasing the maximum surface settlement by around 29% and maximum pipe crown displacement by up to 39.5%. In addition, the EPS block density can reduce the maximum pipe crown displacement substantially.

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The experimental investigation of behaviour of expanded polystyrene (EPS)

Cited by 11 publications

References 1 publication

Decreasing Earth Thrust with EPS Geofoam

Decreasing Earth Thrust with EPS Geofoam

Assessment of Compressive and Flexural Properties and Stacking Strength of Expanded Polystyrene Boxes: Experimental and Simulation Study

The Role of Expanded Polystyrene and Geocell in Enhancing the Behavior of Buried HDPE Pipes under Trench Loading Using Numerical Analyses

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