Floating road construction on soft soil

Gultom, Juni; Pratikso,; Rochim, Abdul

doi:10.1088/1755-1315/955/1/012016

Cited by 4 publications

(4 citation statements)

References 6 publications

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“…The problems that often occur in embankments on soft soils are embankment stability problems and a big consolidation settlement problem in a relatively long time [2]. Indonesia has an area with soft soil of about 20 million hectares (the percentage of Indonesia's land area is about 10%) [3]. Various subgrade improvement methods such as vertical drain improvement, reinforcement with geosynthetics, dynamic methods, and chemical stabilization.…”

Section: Introductionmentioning

confidence: 99%

“…The first use of geofoam on a highway was in Norway in 1972 [7]. The dimensions of geofoam used in civil engineering applications are 0.5, 1.0, 2.5, and -3.0 m. The strength properties of the material vary relatively linear, with the material densities of 20 kg/m³ having a compression 100 kPa strength at 10% strain [3]. When geofoam was first implemented as a lightweight infill material ini Norway in 1972, It, was shown in a research project that road embankment with EPS can sustain repeated loads on the pavement, and the properties material do not deteriorate over time.…”

Section: Introductionmentioning

confidence: 99%

“…A geofoam application that has been investigated is for floating road construction embankments [3], reducing embankment settlement on roads , for soil retaining walls, to reduce earthquake load on retaining walls, reducing the stress on the soil retaining structure due to dynamic loads [9], slope stability, and latest applications of lightweight culvert structures [10].…”

Section: Introductionmentioning

confidence: 99%

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Geofoam Block in Soft Soil Embankment Applications: A Review

Anggraini,

Dhamrodji,

Maizir

2024

IOP Conf. Ser.: Earth Environ. Sci.

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The major issues of building a road over soft soils are low bearing capacity and large settlements. The challenges of road construction on soft soils are enormous, so innovative and environmentally friendly methods are required. Geofoam is a type of lightweight infill material and was already used in Norway in road construction applications in 1972. Using Geofoam reduces compacted fill by 40%, less excavation required and less pulverization of native soil making this a time-saving and economically and environmentally viable solution. The purpose of Geofoam backfill is for lightweight backfilling, reducing soil pressure. Geofoam blocks can be used as a substitute for soft soil fill or as fill on top of soft soil as subgrade for pavement. This paper discusses the latest developments on the various applications of Geofoam blocks as backfill in soft soils presented based on information provided by the author.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Geofoam Block in Soft Soil Embankment Applications: A Review

Anggraini,

Dhamrodji,

Maizir

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…The vertical drain technique, as generally used by PVD or sand drain, is to accelerate the consolidation time [1,2]. EPS or geofoam can be used as lightweight backfill in geotechnical engineering [3,4] and as a soft soil surface layer for the safety of overlying construction [5].…”

Section: Introductionmentioning

confidence: 99%

Avoid construction failure by controlling settlement with a geosynthetic enchased geofoam granular column

Saputra,

Zaika

2023

E3S Web Conf.

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Soils with low bearing capacity (soft soils) can cause the collapse of overlying structures. Before the superstructure is built, the soft soil needs to be improved first. Effective methods to improve soft soils include applying vertical drain techniques or using geofoam materials. With vertical drains, such as PVD or sand drains, the soft soil settlement can be controlled, while geofoam can be used as a top layer material on soft soil. The purpose of this research is to investigate the performance of Sand Geofoam Granule Columns (SGGCs) as a vertical drain. These SGGCs consist of sand-geofoam as the core and geotextile as the wrapper and filter. Variation in diameter and spacing of SGGCs is investigated in large-scale model consolidation equipment in laboratories. The result of the study is that the optimal performance of SGGC is at a diameter of 4.85 cm with 3D spacing. Soft soil improvement with SGGC as a vertical drain can accelerate consolidation time and improve soil bearing capacity.

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Numerical model analysis of subgrade settlement with foam mortar reinforcement based on thickness variation

Jusi,

Pratikso,

Maizir

2024

J Appl Eng Science

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Soft soils have low bearing capacity characteristics and can cause high settlement. Sub grade which becomes the lowest layer in road construction is expected to have a strong bearing capacity so that it can carry the construction load on it. To overcome this problem, it is necessary to reinforce it. Problems will arise if the thickness of the soft soil in the subgrade varies. So, it needs to know and identify the scale of declining that occurs if the soft soil variation is reinforced on it. Foam mortar is an alternative reinforcement that is expected to improve the properties of the soft soil. The purpose of this research is to analyze the soft soil embankment model using foam mortar reinforcement against variations in soft soil height. The method of analysis was carried out by numerical method of Plaxis 2D version 2023. The geometric model in this study with foam mortar thickness of 30 cm was varied against subgrade layer height of 60 cm, 120 cm and 180 cm. The modeled load is a centralized load with variations of 0, 10, 20, 40, 60, 80, 100 and 120 kN. Numerical results obtained the highest settlement occurred at 180 cm soft soil layer of 0.01421 mm. The largest deformation occurred in the soft soil layer of 1,461 x 10-3 mm. In conclusion, the thicker the soft soil layer, the higher the settlement and the greater the deformation.

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Floating road construction on soft soil

Cited by 4 publications

References 6 publications

Geofoam Block in Soft Soil Embankment Applications: A Review

Geofoam Block in Soft Soil Embankment Applications: A Review

Avoid construction failure by controlling settlement with a geosynthetic enchased geofoam granular column

Numerical model analysis of subgrade settlement with foam mortar reinforcement based on thickness variation

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