Laboratory study of expanded polystyrene (EPS) geofoam used with expansive soils

İkizler, Sabriye Banu; Aytekin, Mustafa; Nas, Evin

doi:10.1016/j.geotexmem.2007.05.005

Cited by 74 publications

(12 citation statements)

References 16 publications

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“…The replacements with geofoam were able to mitigate the vertical stresses imposed onto underlying (difficult) soils (Horvath 1994(Horvath , 1997(Horvath , 2008Doskov 1997;Snow and Nickerson 2004) or flexible utilities pipelines, as well as to reduce the lateral stresses loaded onto the side-way earth structures (Hazarika and Okuzono 2004;Horvath 2004). In practice, geofoam also demonstrated favorable performances in buffering mechanical impacts, e.g., swelling of expansive soil (Aytekin 1997;Ikizler et al 2008) and seismic vibrations (Riad and Horvath 2004;Zarnani et al 2009), as well as in mitigating thermal distresses in permafrost regions (Wen et al 2008). …”

Section: Introductionmentioning

confidence: 99%

Measuring and Modeling Proportion-Dependent Stress-Strain Behavior of EPS-SandMixture

Deng

Xiao

2010

Int. J. Geomech.

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A geofoam was produced by blending expanded polystyrene (EPS) beads and sands in proportions. The formed mixtures, known as EPS-sands, were 32-66% lighter than general earthfills (e.g., sand). Consolidated-drained (CD) triaxial compression tests were conducted on EPS-sand mixture specimens to observe their stress-strain characteristics, specifically, the stress-strain responses in relation to the EPS contents (0.5%, 1.5% and 2.5% by weight) used in the mixtures and confining pressures

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Section: Introductionmentioning

confidence: 99%

Measuring and Modeling Proportion-Dependent Stress-Strain Behavior of EPS-SandMixture

Deng

Xiao

2010

Int. J. Geomech.

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“…Since Frydenlund [7] firstly reported that the EPS geo-foam was used as an embankment fill in Norway, more and more studies about this artificial material have been conducted and its good performances have been confirmed. For example, replacing the typical embankment fill material in highways [5], diminishing the maximum lateral earth pressure of a reinforced soil platform [8], and reducing the swelling pressure by expansion of soil behind the retaining wall [9], etc. At the same time, a lightweight fill consisting of dredged soil and air foam and cement (i.e., EPS beads) was adopted to reduce the embankment self-weight on soft foundations in Japan [10].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Deformation and Damping of Cement Treated and Expanded Polystyrene Mixed Lightweight Subgrade Fill under Cyclic Load

et al. 2019

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To investigate the deformation and damping characteristics of cement treated and expanded polystyrene (EPS) beads mixed lightweight soils, this study conducted a series of triaxial shear tests cyclic loading for different confining pressures, cement contents, and soil categories. Through repeated loading and unloading cycles, axial accumulative strain, resilient modulus, and damping ratio versus axial total strain were analyzed and the mechanical behavior was revealed and interpreted. Results show that the resilient modulus increases with increasing confining pressure and cement content. A decreasing power function can be used to fit the relationship between the resilient modulus and the axial total strain. Although sandy lightweight specimens usually own higher resilient modulus than silty clay lightweight specimens do, the opposite was also found when the axial total strain is larger than 8% with 50 kPa confining pressure and 14% cement content. For damping ratio the EPS beads mixed lightweight soil yields a weak growth trend with increasing axial total strain and a small reduction with higher confining pressure and cement content. For more cementations, the damping ratio of the sandy lightweight soil is always smaller than the silty clay lightweight soil. Nonetheless, the differences of damping ratios that were obtained under all of the test conditions are not significant.

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“…Taking into account the unevenness of the floor in the study area (around 7 m), it is intended to take advantage of the low density of EPS (in this work, EPS will be used as blocks or rigid elements, which are available on the market in the form of resins called Geofoam that are used by injection), a characteristic that is applied in numerous examples in scientific texts like in Miao et al (2013) and Davila et al (2015), that analyze their properties and their possible applications, highlighting their use as a buffer element in seismic situations (Zarnani and Bathurst, 2009), their inclusion as an element of protection against expansive soils (Ikizler et al, 2007), and as proposed here, their use as a filler material or lightening element, mainly applied to cantilever walls (Ertugrul and Trandafir, 2013;Ertugrul and Trandafir, 2011;Horvath, 1997).…”

Section: Introductionmentioning

confidence: 99%

Behavior of expanded polystyrene as lightweight filler in retaining walls with intermediate slabs

Dávila

Garrido

Jaramillo-Morilla

et al. 2019

Lat. Am. j. solids struct.

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The present study explores a retaining wall with an intermediate slab. To reduce the lateral earth pressure on the wall, the substitution of part of the soil by blocks of expanded polystyrene (EPS) with high density is proposed, which could result in significant economic savings. Also, the possibility of building the wall elevation with smaller thickness (preexisting wall reinforcement) will be analyzed. To do this, the situation and optimum geometry of the EPS blocks will be studied in detail, besides a study of two scaled models, one without EPS and another with blocks with rectangular distribution. The obtained results allow us to affirm that the reduction in pressure is very significant if the blocks are arranged with the proper geometry and situation over the sliding plane but without eliminating the beneficial effect of the weight of the ground located over the slab.

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Laboratory study of expanded polystyrene (EPS) geofoam used with expansive soils

Cited by 74 publications

References 16 publications

Measuring and Modeling Proportion-Dependent Stress-Strain Behavior of EPS-SandMixture

Measuring and Modeling Proportion-Dependent Stress-Strain Behavior of EPS-SandMixture

Characteristics of Deformation and Damping of Cement Treated and Expanded Polystyrene Mixed Lightweight Subgrade Fill under Cyclic Load

Behavior of expanded polystyrene as lightweight filler in retaining walls with intermediate slabs

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