Effect of geogrid-reinforcement in granular bases under repeated loading

Suku, Lekshmi; Prabhu, Sudheer; Babu, G. L. Sivakumar

doi:10.1016/j.geotexmem.2017.04.008

Cited by 48 publications

(8 citation statements)

References 15 publications

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“…In recent years, more and more researchers pay attention to the deformation and bearing capacity of reinforced foundation under repeated or cyclic loads [22,54,61,67]. Tavakoli Mehrjardi and Khazaei [54] conducted model tests to study the influence of soil particle size, aperture size of geogrid and size of footing on the load-settlement behavior of geogrid reinforced foundation under repeated load.…”

Section: Current Research Trend and Future Prospectmentioning

confidence: 99%

“…Tavakoli Mehrjardi and Khazaei [54] conducted model tests to study the influence of soil particle size, aperture size of geogrid and size of footing on the load-settlement behavior of geogrid reinforced foundation under repeated load. Suku et al [61] investigated the effect of geogrid reinforced gravel soil foundation on reducing pavement settlement and improving the overall performance of the road through cyclic plate load tests. Wang et al [67] carried out large-scale model tests to study the mechanical deformation characteristics of geogrid reinforced sand foundation under cyclic load.…”

Section: Current Research Trend and Future Prospectmentioning

confidence: 99%

“…Schematic view of the layout of closely spaced square footing and circular footing. S is the center to center distance between two footings Type of loading applied to the footings: a uniform loading (adopted from[2]); b eccentric loading (adopted from[60]) and c repeated loading (adopted from[61]) Vol. :(0123456789) SN Applied Sciences (2020) 2:2074 | https://doi.org/10.1007/s42452-020-03930-5 Review Paper…”

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confidence: 99%

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Planar geosynthetic-reinforced soil foundations: a review

2020

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Geosynthetics-reinforced soil (GRS) foundation can improve the bearing capacity of the foundation and reduce the settlement of the footing, which has been widely applied to the treatment and improvement of soft soil foundation. In recent years, scholars have carried out a large number of studies to reveal the influence of different factors on the load and settlement behaviors of GRS foundations. In this study, the reinforcing mechanisms of reinforced materials are first summarized, and then the literature review of planar geosynthetic-reinforced foundations from the aspects of experimental studies, numerical simulations and theoretical analyses are presented. Finally, the current research trend of reinforced foundation and the prospects in the future study are discussed. Although the researches on the performance of GRS foundations are conducted extensively, there is no unified understanding on the failure mode and reinforcing mechanism of reinforced foundation. It is necessary to propose the accurate and simple calculation method to evaluate the ultimate bearing capacity of reinforced foundations based on the reinforcing mechanism and failure mode. In addition, the dynamic response of GRS foundations under cyclic loading and earthquake needs to be studied intensively. The paper summarizes the past and present developments of the GRS foundations and provide the views for the further researches.

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Section: Current Research Trend and Future Prospectmentioning

confidence: 99%

Section: Current Research Trend and Future Prospectmentioning

confidence: 99%

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confidence: 99%

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Planar geosynthetic-reinforced soil foundations: a review

2020

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“…Cyclic plate load tests are well known for successfully demonstrating the effect of geotextile or geogrid reinforcement in pavement structures under repeated loading. In general, the cyclic plate load tests on unpaved granular sections have been carried out as large scale laboratory experiments with unreinforced and reinforced pavement sections in box type experimental setups with different dimensions [29][30][31][32][33]. Similarly, various types of subgrade and base materials with different layer thicknesses have been used for these experimental studies.…”

Section: Introductionmentioning

confidence: 99%

Effect of Geogrid Reinforcement in Weak Subgrades

Wimalasena¹

2020

GEOMATE

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Geogrids can be identified as comparatively low cost alternative for pavement construction on soft subgrades. However, comprehensive mathematical models are yet to be developed to define the composite behaviour of geogrid pavements. Therefore, it is required to perform pavement model testing to understand the performance of geogrid reinforcements under different pavement and geogrid conditions. Hence, this research study aims to compare the behaviour of composite geogrid in a weaker subgrade (CBR <3%) by performing two pavement model tests under repeated loading conditions. A steel test box with length, width and height of 1m, 1m, 1.2m respectively were used to construct both models with a subgrade having 500mm thickness and 3% CBR. A 200mm thick granular layer was compacted on top of the subgrade by achieving 91% degree of compaction. One model was selected as the control section and a composite geogrid at the base subbase interface was included in the other one. Both pavement models were tested for more than 100,000 repeated load cycles using a 200mm diameter plate on top of the granular base to simulate a tyre pressure of 550kPa. The results demonstrated that the inclusion of a composite geogrid significantly reduced the rutting depth of the granular layer and achieved a Traffic Benefit Ratio (TBR) of 5 at 50mm rutting. Furthermore, a significant reduction of pressure transmission to the subgrade by the composite geogrid was observed.

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“…Field study, laboratory study and numerical studies emphasised the use of geosynthetic material in pavement of soft clay and dense sand ground [5][6][7][8][9][10][11][12][13][14]) under static loading and literature shows the importance of geosynthetic under cyclic loading to reduce the vertical stress and deformations [15][16][17]. This manmade material can also be used under foundation [18][19][20] to increase the bearing capacity of the soil.…”

Section: Introductionmentioning

confidence: 99%

Functional and cost- benefits of geosynthetics as subgrade reinforcement in the design of flexible pavement

Sivapriya¹,

Ganesh-Kumar

2019

Rev. Fac. Ing.

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The vertical stress exerted by the vehicles will be high in a populated road and to increase the bearing capacity of subgrade characteristics, geosynthetic material can be used. In the current study different geosynthetic material such as geo-grid, geo-textile and geo-membrane were used to as a subgrade reinforcement member inside the CBR mould for understanding the improvement in subgrade for single, two and three geosynthetic layering in the CBR mould. The results show there was a constant increase in the bearing with the increase in a number of layers and this improvement varied with type of geosynthetic materials also. Among three geosynhteic materials, geogrid shows improved CBR characteristics. Finally, Cost analysis and design of flexible pavement were carried for an optimum number of layers for geogrids. There was reduction of about 6.38% in the cost of construction when using geogrid as subgrade reinforcement member.

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Effect of geogrid-reinforcement in granular bases under repeated loading

Cited by 48 publications

References 15 publications

Planar geosynthetic-reinforced soil foundations: a review

Planar geosynthetic-reinforced soil foundations: a review

Effect of Geogrid Reinforcement in Weak Subgrades

Functional and cost- benefits of geosynthetics as subgrade reinforcement in the design of flexible pavement

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