Design and Performance of EPS Footing for Lightweight Farm Structure on Peat Soil

Abdullah, Mohammad; Huat, Bujang B. K.; Kamaruddin, R.; Ali, Abu Kasim; Duraisamy, Youventharan

doi:10.3844/ajassp.2007.484.490

Cited by 5 publications

(5 citation statements)

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“…Further, [17] and [18] have performed a study on in Sessang and Klang peat in Malaysia respectively. Numerous researches have been accomplished in an effort to characterise and stabilise the peat soil in Malaysia due to its wide occurrence as well as frequent subsidence and settlement problems.…”

Section: Peat Occurrence In Malaysiamentioning

confidence: 99%

Characteristics of Embedded Peat in Coastal Environments

Al-Ani¹

2013

geomate

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This study examines the engineering characteristics and properties of peat soils in coastal environments in Ireland, Italy, Malaysia, Netherlands, Turkey and USA. The engineering properties to be examined are consolidation characteristics, Atterberg limits, density, organic content, shear strength, and moisture content. Moisture content and organic content are good indication of the occurrence of peat soils because these parameters are inherently high in this soil type. In addition, peat soil is highly compressible and is known to be problematic for geotechnical construction. The peat layer has an adverse effect on the long-term settlement of road embankments. A case study of peat soil deposits in Surfers Paradise in Australia will be presented in the paper. Peat soil in the study area is embedded at depth ranging between R.L. -10 to R.L. -19.6 m below the ground surface and it has a thickness ranging from 0.1 to 7.0 m in some locations. It possesses low shear strength of between 30-40 kPa and the moisture content can be up to 247 %. Four empirical equations have been established for the peat soils and they are compared with those published in the literatures.

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Section: Peat Occurrence In Malaysiamentioning

confidence: 99%

Characteristics of Embedded Peat in Coastal Environments

Al-Ani¹

2013

geomate

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“…As evident from these figures, for a given normal stress magnitude, 0.5 to 3.0 wt.% EPS content generally causes a marginal overall reduction in initial specimen stiffness, a substantial reduction in secant stiffness, and a more modest decrease in the peak shear resistance. Horizontal displacement (mm) Figures [13][14][15][16] show the vertical displacement against horizontal displacement traces for the various clayey sand-EPS beads mixtures. As plotted, negative vertical displacement readings indicate specimen compression.…”

Section: Direct Shear Resultsmentioning

confidence: 99%

“…Horizontal displacement (mm) Figures [13][14][15][16] show the vertical displacement against horizontal displacement traces for the various clayey sand-EPS beads mixtures. As plotted, negative vertical displacement readings indicate specimen compression.…”

Section: Direct Shear Resultsmentioning

confidence: 99%

“…Note that utilizing lightweight fill of unit weight less than that of water at locations below the groundwater table level creates a buoyancy effect, which, depending on the circumstances and the applied load magnitude, may impair or enhance geotechnical performance; e.g., for low applied/self-weight loading scenarios, generated buoyancy by a significant volume of submerged EPS-block geofoam may lead to flotation (failure). Conversely, prototype EPS-block footings [14] and bamboo-frame structures incorporating recycled plastic block inclusions [15] have been advocated as foundation systems for lightweight structures bearing on waterlogged peat deposits-these being designed as floating foundations using the weight compensation technique [15].…”

Section: Introductionmentioning

confidence: 99%

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Geomechanical Behaviour of Uncemented Expanded Polystyrene (EPS) Beads–Clayey Soil Mixtures as Lightweight Fill

Abbasimaedeh¹,

Ghanbari

O’Kelly

et al. 2021

Geotechnics

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Lightweight fill can be advantageous in embankment construction for the purposes of reducing the (i) bearing pressures on the underlying soil foundation, (ii) destabilizing moments for constructed earthen slopes, and (iii) earth pressures acting behind retaining walls. This paper investigates the merits/limitations of particulate expanded polystyrene (EPS) beads mixed with clayey sand (CS) soil as lightweight fill, considering both geotechnical and environmental perspectives. The bench-scale geotechnical testing programme included standard Proctor (SP) compaction, California bearing ratio (CBR), direct shear (sheardox), oedometer and permeability testing performed on two different gradation CS soils amended with 0.5, 1.5 and 3.0 wt.% EPS, investigating two nominal bead sizes equivalent to poorly-graded medium and coarse sands. Compared to the unamended soils, the compacted dry density substantially decreased with increasing EPS beads content, from 2.09 t/m3 (0 wt.% EPS) to as low as 0.33 t/m3 for 3 wt.% (73 v.%) of larger-sized EPS beads. However, from analyses of the test results for the investigated 50 to 400 kPa applied stress range, even 0.5 wt.% (21 v.%) EPS beads caused a substantial mechanical failure, with a drastic decay of the CBR and compressibility parameters for the studied CS soils. Given the more detrimental environmental cost of leaving myriads of separate EPS beads mixed forever among the soil, it is concluded that the approach of adding particulate EPS beads to soils for producing uncemented lightened fill should not be employed in geotechnical engineering practice.

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“…Above the groundwater level, expanded polystyrene (EPS) blocks can be used as lightweight fill in constructing the embankment core (Aabøe and Frydenlund, 2011). Prototype EPS footings, each capable of carrying a 1 t load, have been proposed and they are designed as floating foundations using the weight compensation technique (Abdullah et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Ultralightweight foundation system for peaty ground

AminuIbrahim¹,

Asadi

O’KellyBrendan

et al. 2022

Environmental Geotechnics

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Construction on peat deposits represents a major challenge for the geotechnical community. Waterlogged peat deposits have great potential for buoyancy generation. The premise of the present investigation is that this can be beneficially incorporated in foundation design practice, thereby reducing the net bearing pressure and hence resulting settlements. A novel foundation system, comprising a bamboo frame (BF) structure incorporating recycled plastic block (RPB) inclusions, is presented for supporting lightweight structures bearing on peaty ground. The buoyancy effect is produced by the lower bulk density of the foundation construction materials combined with the waterlogged condition of the peat deposit. A programme of reduced-scale 1 g physical modelling was conducted to investigate the performance of BF- and BF–RPB-type footing bearing on remoulded peat with different water content and fibre content (FC) values. The mobilised undrained bearing capacity (q f) increased for lower-water-content and higher-FC peat materials. Deeper BF footings and the inclusion of the RPBs within their cavities significantly improved the mobilised q f value. Advantages of the presented foundation system over conventional solutions for peaty ground include its simple technology, reduced earthworks in construction, reduced settlement due to the buoyancy contribution and being more sustainable and economically viable.

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Design and Performance of EPS Footing for Lightweight Farm Structure on Peat Soil

Cited by 5 publications

References 1 publication

Characteristics of Embedded Peat in Coastal Environments

Characteristics of Embedded Peat in Coastal Environments

Geomechanical Behaviour of Uncemented Expanded Polystyrene (EPS) Beads–Clayey Soil Mixtures as Lightweight Fill

Ultralightweight foundation system for peaty ground

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