The role of geosynthetics in reducing the fluidisation potential of soft subgrade under cyclic loading

Arivalagan, Joseph; Rujikiatkamjorn, Cholachat; Indraratna, Buddhima; Warwick, Andy

doi:10.1016/j.geotexmem.2021.05.004

Cited by 20 publications

(4 citation statements)

References 52 publications

(65 reference statements)

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“…However, stiff geogrids are mostly utilized to reinforce the foundation soil for the oil tank storage facilities, airfields, roads, railways, and retaining wall structures [19].…”

Section: Methodsmentioning

confidence: 99%

Road Pavement Using Geosynthetics on the Territory of Rural Settlements

Muzdybayeva¹

2022

GEOMATE

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Quantitative and qualitative changes in recent years in the road industry require new technological approaches to road construction. Today some of the most used materials in road construction are geosynthetics. Geosynthetics have become interesting engineering materials in a wide range of applications and geotechnical, environmental, hydraulic, environmental, and private developments. The paper presents the research on the load and operational condition of the test model of a road reinforced with different geosynthetic materials. Geogrid and geotextile were used in testing. High-strength geotextiles or geogrids can provide adequate embankment reinforcement when properly designed and selected. Both materials can be used equally well, provided with the requisite design properties. Under the influence of the load from transport, the filler used for the cells is compacted. Currently, there is a redistribution of load throughout the entire volume of the monolithic structure with the grid. The tests carried out showed that using geotextiles leads to a decrease in the settlement coefficient by 25% and the use of a geogrid -by 38%. In rural areas of Kazakhstan, where the road network is in poor condition due to weak soils, strengthening the roadway with traditional materials will require large sums of money. Reinforcing the soil of unpaved roads with geosynthetic materials will allow more rationally and at a lower cost to improve the performance of unpaved roads in rural areas of Kazakhstan.

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“…However, stiff geogrids are mostly utilized to reinforce the foundation soil for the oil tank storage facilities, airfields, roads, railways, and retaining wall structures [19].…”

Section: Methodsmentioning

confidence: 99%

Road Pavement Using Geosynthetics on the Territory of Rural Settlements

Muzdybayeva¹

2022

GEOMATE

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“…Arivalagan et al [50] performed cyclic tests on three different geotextiles (Tests G1, G2, and G3) to assess the efficacy in preventing particle migration and alleviating subgrade fluidisation potential. The geotextile G1 had a filter membrane in between nonwoven geotextile layers and a filter aperture opening size (O 95 ) of less than 1 lm.…”

Section: Materials and Test Programmentioning

confidence: 99%

Internal Instability and Fluidisation of Subgrade Soil under Cyclic Loading

et al. 2022

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Rapid globalisation and the rise in population have substantially increased the demand for rail infrastructure which have been critical in transporting passengers and freight across landmasses for over a century. The surge in demand often leads to the construction of railway lines along with unfavourable soil conditions which result in different forms of substructure challenges such as uneven track deformations, ballast degradation, and subgrade mud pumping. A widespread site investigation along the eastern coast of New South Wales, Australia, indicated the prevalence of mud holes or bog holes along the tracks. The field studies suggest that low-to-medium plasticity soils are highly susceptible to mud pump when subjected to heavy axle loads under impeding drainage conditions. Subsequent laboratory investigations conducted on the remoulded soil samples collected from the sites indicated the sharp rise in cyclic axial strains and excess pore pressures along with the internal redistribution of moisture content as the governing mechanism for mud pumping. Numerical simulations performed using discrete element method coupled with computational fluid dynamics show that at a high hydraulic gradient, there is a substantial loss of soil contact network which leads to the upward migration of soil particles. The role of plastic fines and the inclusion of geosynthetic layer between the ballast and subgrade are also discussed in this paper. It was observed that the addition of 10% of cohesive fines increased the resistance of subgrade soils to mud pumping. On the other hand, geosynthetic inclusions not only assist in dissipating high cyclic excess pore pressures but also inhibit the upward migration of fine particles.

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“…Geogrids have been shown to be a practical solution when placed in ballast [2,3,4] and soil [5,6,7,8,9,10,11] to reduce plastic settlement and improve stress distribution. Geogrids also proved to increase the overall stability of the railway tracks via preventing particle translations and providing better drainage behaviour [12].…”

Section: Introductionmentioning

confidence: 99%