Settlement and bearing capacity of geogrid-reinforced sand over collapsible soil

Alawaji, H.

doi:10.1016/s0266-1144(01)00002-4

Cited by 93 publications

(24 citation statements)

References 13 publications

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“…The load increments implemented in the experiment were 7, 12, 25, 50, 100, and 200 kPa. A seating pressure of 7kPa was first applied before loading was performed [12]. Reloading was also performed in the experiment and it was initiated at 200 kPa.…”

Section: Consolidation Testmentioning

confidence: 99%

A Comparative Settlement Prediction of Limestone Blended Materials Using Asaoka and Hyperbolic Method

Uy¹

2018

GEOMATE

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ABSTRACT:The construction industry in the Philippines is predicted to sustain its growth up to 2021 because of the infrastructure plan of the government according to the Philippine Infrastructure Report. With this, the demand for construction materials would increase and as a result, an increase in prices is expected. To address this problem, an alternative material must be explored. A promising material is a limestone because it is abundant in the Philippines. These materials can be used as a material for structural fill or embankment. In order to determine the material's possible use its capacity to withstand loads must be checked. In this study, its compressibility is the main focus. Its consolidation parameters were first obtained by performing one-dimensional consolidation test. Limestone wastes were mixed with a conventional soil and it is proportioned at 0%, 20%, 40%, 60% and 100%. After the consolidation parameters were determined, the data from the consolidation test were used to predicting the settlement behavior of the material. The Asaoka method and hyperbolic method were used in the prediction and the results of both methods were compared. Based on the results, it was observed in the one-dimensional consolidation test, the limestone waste used had a minimal effect on the compressibility of the conventional material used. Lastly, the prediction of the hyperbolic method is larger for some mix proportions.

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Section: Consolidation Testmentioning

confidence: 99%

A Comparative Settlement Prediction of Limestone Blended Materials Using Asaoka and Hyperbolic Method

Uy¹

2018

GEOMATE

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“…Since the total depth of subgrade and base course was greater than 70 cm in each test, the boundary influence from the tank base would be negligible according to Boussinesq Stress Distribution Analysis. In addition to this, the influences from the tank walls would be minimal on the test data because the size ratio between tank and footing diameter is considerably large (100/17.5 ≈ 6) [6] [7].…”

Section: Experimental Setup and Testingmentioning

confidence: 99%

Optimum Use of Geogrid in the Unbound Granular Layer for the Pavement Construction

Soe

Kuwano

Akram

et al. 2018

GEOMATE

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ABSTRACT:The benefits of using geogrid for the pavement construction have been reported by many researchers. The well-known benefits are base course reduction and rut-depth reduction. Currently, the available information is still limited for the geogrid-stabilized pavement construction. In this study, the benefits of geogrid stabilization were investigated through series of laboratory test. Base-course thickness and reinforcement position of geogrid were considered as the control parameters and their influences were analyzed on the surface and subgrade deformations. The tests were performed in a rigid square-tank, and the subgrade and base course were modelled by using the fine and coarse silica sands. Triangular geogrid was used for the reinforcement. Cyclic loading was applied with the variable steps of loading ranging from 100 kPa to 550 kPa. From the test results, it was realized that the surface deformation was mainly contributed from the subgrade deformation in the thin basecourse sections. In contrast, the base-course deterioration dominated and resulted in severe surface deformation in the thick base-course sections. This severe deformation was effectively reduced when geogrid location was shifted to the upward position inside base course layer. However, this geogrid position has negligible influence on the subgrade deformation, which is considerably affected by the base-course thickness. In all test cases, a progressive loss in base course thickness was noticed under high footing pressure. This loss is smaller in the thin section, compared to thick one. Test results revealed that the benefit of geogrid stabilization is more obvious in the thin section.

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“…A number of stabilizers, such as cement, lime and fly ash, depend on their chemical reactions with the soil elements in the presence of water [2], [3] and [4]. Other additives, such as geofiber and geogrid, depend on their physical effects to improve soil properties [5].The methods of soil modification or stabilization include physical processes such as soil densification, blends with granular material, use of reinforcements (Geogrids), undercutting and replacement, and chemical processes such as mixing with cement, fly ash, lime, lime byproducts, and blends of any one of these materials. Soil properties such as strength, compressibility, hydraulic conductivity, workability, swelling potential, and volume change tendencies may be altered by various soil modification or stabilization methods, ( The Indiana Department of Transportation) INDOT standard specifications provide the contractor options on construction practices to achieve soil modification that includes chemical modification, replacement with aggregates, geosynthetic reinforcement in conjunction with the aggregates, and density and moisture controls.…”

Section: Introductionmentioning

confidence: 99%

Improvement Some Soil Properties by Using Lime and Cement at Different Percentages

2017

IJSR

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The Treatment of soils using lime and cement is one of the appropriate techniques that provides solutions for poor geotechnical soils used in road construction. The main objective of this study is to improve some soil properties such as (water content, dry denisity, liquid limit, plastic limit) at different additive percents and two types of additive. In this researchsoilsampleswere testedin thestandardcasewithoutadditiveand with theadditive, two types ofadditiveshas been used(cement and lime). The test procedure and test results conducted on original soil and treated soilare presented. Soil-lime mixtures and soil-cement mixture were tested with three percentages of each cement and lime(3%,6%,9%) from soil dry weight and one of these percentages is the optimum additive content 6% cement, 6% lime. From our result we found that 6%cement was the optimum additive (percent and type).

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Settlement and bearing capacity of geogrid-reinforced sand over collapsible soil

Cited by 93 publications

References 13 publications

A Comparative Settlement Prediction of Limestone Blended Materials Using Asaoka and Hyperbolic Method

A Comparative Settlement Prediction of Limestone Blended Materials Using Asaoka and Hyperbolic Method

Optimum Use of Geogrid in the Unbound Granular Layer for the Pavement Construction

Improvement Some Soil Properties by Using Lime and Cement at Different Percentages

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