Measuring and Modeling Proportion-Dependent Stress-Strain Behavior of EPS-SandMixture
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Deng, An; Xiao, Yang

doi:10.1061/(asce)gm.1943-5622.0000062

Cited by 60 publications

(20 citation statements)

References 23 publications

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“…A combination of cement and air foam has been recently researched and applied in civil engineering and infrastructure applications as fill and pavement materials to primarily reduce the load on soft clay deposits (Tsuchida, 1995;Tsuchida et al, 1996;Tsuchida et al, 2001;Tsuchida and Kang, 2002;Tsuchida and Kang, 2003) similar to other lightweight fill materials such as expanded polystyrene (Deng and Xiao, 2010), tires (Nakhaei et al, 2012) and lightweight concrete (Chindaprasirt and Rattanasak, 2011). This stabilized material is designated as Lightweight Cellular Cemented (LCC) material (Horpibulsuk et al, 2014a).…”

Section: Introductionmentioning

confidence: 98%

Mix design charts for lightweight cellular cemented Bangkok clay

Teerawattanasuk

Voottipruex

Horpibulsuk

2015

Applied Clay Science

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Section: Introductionmentioning

confidence: 98%

Mix design charts for lightweight cellular cemented Bangkok clay

Teerawattanasuk

Voottipruex

Horpibulsuk

2015

Applied Clay Science

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“…The behaviour is essentially dependent on the mix ratios and mechanical interaction of sands and beads. 12 The reduction of lateral earth forces acting on non-yielding retaining walls by EPS inclusion was also investigated. 13 It was observed that the deformation of the EPS was concentrated in the bottom half of the retaining wall because of higher stresses in that zone.…”

Section: Literature Reviewmentioning

confidence: 99%

Preliminary laboratory assessments of a lightweight geocomposite material for embankment fill application

Okonta¹

2015

S. Afr. J. Sci.

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The cost of retaining structures used for the lateral support of roadside embankments can be significantly reduced through the use of lightly cemented mixtures of expanded polystyrene (EPS) beads and backfill soils as lightweight roadside embankment material. Four grades of residually derived sandy soils were mixed with EPS beads and the geocomposites were stabilised with 3% cement content, compacted and cured. The textural properties and shear strength parameters of dry and soaked specimens of the cemented geocomposites were determined by direct shear tests. The shear parameters and slope stability charts were used to simulate the slope of typical road embankments. The settlement potentials at different applied normal stresses were also determined. Inclusion of EPS reduced the dry density of the residual soils from an average value of 1790 kg/m3 to 1335 kg/m3. The maximum friction coefficient, tan ᴓ′, mobilised by the geocomposite specimens decreased with an increase in the soil fines content (>0.425 mm). The difference in tan ᴓ′ between the stabilised geocomposites and the natural soil was also dependent on the fines content. For an embankment height of 20 m, slope angles of 38° and 62° were determined for fine sand geocomposites in fully saturated drainage and drained conditions, respectively. Lower slope angles were determined for geocomposites made from silty, coarse and gravelly sands. A limiting embankment height of 50 m was determined for the four geocomposites. Rainfall-induced settlement of geocomposites was dependent on pre-inundation stiffness; for the range of applied stress up to 200 kPa, the settlement exhibited by the fine and silty sand geocomposites was lower than that for the coarse and gravelly sand geocomposites. Fine and silty sands make poor materials for slope embankments because of their poor hydraulic conductivity; however, fine and silty sand geocomposites have a good conductivity and friction angle to support slope embankments.

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“…Previous studies show that the EPS content greatly affects the shear strength and unit weight of EPS-sand mixtures. The EPS-weight content of 0.5% suggested by Deng and Xiao [4] could achieve reasonable shear strength as well as a 26% reduction in unit weight. It was also recognized that the strength and deformation properties of LWGM were significantly improved due to the application of cement-like materials.…”

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confidence: 99%