Radial stresses and resilient deformations of geogrid-stabilized unpaved roads under cyclic plate loading tests

Sun, Xiaohui; Han, Jie; Kwon, Jayhyun; Parsons, Robert L.; Wayne, Mark H.

doi:10.1016/j.geotexmem.2015.04.018

Cited by 49 publications

(9 citation statements)

References 24 publications

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“…In all cases, the loss in base-course thickness became more obvious with increasing pressure level. Sun et al [12] also reported the similar behavior in their study.…”

Section: Loss In Base Course Thicknesssupporting

confidence: 79%

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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“…In all cases, the loss in base-course thickness became more obvious with increasing pressure level. Sun et al [12] also reported the similar behavior in their study.…”

Section: Loss In Base Course Thicknesssupporting

confidence: 79%

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

Soe

Kuwano

Akram

et al. 2018

GEOMATE

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“…This was because, during cyclic loading, soil structure might have been deteriorated due to less lateral confinement effect in 0-degree footing orientation. Consequently, the stress concentration would be higher 15) , and might result in lower bearing pressure in subsequent monotonic loading test. On the other hand, a stable soil structure would contribute enough interlocking effect under pure monotonic loading with 0-degree footing orientation.…”

Section: Bearing Capacity Behavior After Cyclic Loadingmentioning

confidence: 99%

Directional Confinement Effect of Geogrid on Deformation and Bearing Capacity of Reinforced Sand under Cyclic and Monotonic Loadings

Soe

Kuwano

Tachibana

et al. 2016

Geosynthetics Engineering Journal

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Deformation behavior and bearing capacity of geogrid-reinforced sand were investigated through experimental study. Series of cyclic and monotonic loading tests were performed by using a large container, a rectangular footing and two geogrid types: triangular and biaxial. Footing orientation was considered as a parameter to examine the directional confinement effect of the geogrid. Test results showed that this effect was obvious on the development of permanent deformation and on the ultimate bearing capacity of reinforced sand. However, this influence became smaller on the ultimate bearing capacity if a stiffer geogrid was used for reinforcement. Significant reduction in permanent deformation and beneficial improvement in bearing capacity were observed in all geogrid-reinforced tests.

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“…The evaluation of the properties of layers made of mechanically stabilized material is based on the evaluation of the modulus that a given material can achieve and the deformation as a function of the number of loads [1]. The assessment of the mechanical properties of aggregates, including the assessment of their non-linear behaviour, is the subject of many studies and analyses [2,3,4,5,6]. The value of the modulus is determined by several factors, including grain size of the mixture, its moisture, density of the layer prior observation, condition of the subgrade (its moisture content), deformations occurring in mining areas.…”

Section: Introductionmentioning

confidence: 99%

Assessment of burned coal shale properties based on cyclic load

et al. 2018

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Abstract. Road surfaces that are subjected to cyclic loads generated by vehicle wheels must meet the requirements concerning the durability in the assumed period of use. The durability of the layered pavement construction systems depends on the value and frequency of the load as well as on the mechanical features of its individual layers. Layers of unbound, mechanically stabilized mixtures are a significant aspect of surfaces that are susceptible. Mixtures of this type can be applied both to the subgrade layers as well as to the bottom pavement layers, including the improved course. Considering the cyclic nature of the load on the surface of the entire system, mechanically stabilized layers are subject to continuous, but slow, densification during the period of use, which results in the formation of permanent deformations and so-called structural ruts. Post-mining waste is frequently used in road construction. which is the so-called burned shale that can be used for the bottom layers of the surface and layers of the improved subgrade (soil replacement). This material was the subject of the analysis. The evaluation was based mainly on the results of pilot studies covering cyclic loads of the layer/course made of the so-called red shale. The applied research method was aimed at preliminary assessment of its suitability for the assessment of the behaviour of the disintegrated medium under the conditions of test loads simulating the movement of vehicles.

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Radial stresses and resilient deformations of geogrid-stabilized unpaved roads under cyclic plate loading tests

Cited by 49 publications

References 24 publications

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

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

Directional Confinement Effect of Geogrid on Deformation and Bearing Capacity of Reinforced Sand under Cyclic and Monotonic Loadings

Assessment of burned coal shale properties based on cyclic load

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