Rutting Behavior of Geocell Reinforced Base Layer Overlying Weak Sand Subgrades

Kumar, V. Vinay; Saride, Sireesh

doi:10.1016/j.proeng.2016.06.166

Cited by 26 publications

(4 citation statements)

References 7 publications

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“…Saride et al [37] measured a high TBR value of 23 at 10% settlement in geocell-reinforced pavement bases under a cyclic load of 400 kPa [37]. A TBR value of 1.87 was observed at a settlement ratio of 15% in cyclic plate load tests conducted by Kumar and Saride [71].…”

Section: Geocells In Transportation Applicationsmentioning

confidence: 95%

“…Saride et al [37] showed that geocells were successful in reducing the CPD in a subgrade by one-fourth of the CPD in unreinforced subgrade even after 50 cycles of 400 kPa traffic loading [37]. Similarly, rut depths were reduced by 22% after 100 cycles in geocell-reinforced base courses under cyclic loading of 550 kPa [71].…”

Section: Geocells In Transportation Applicationsmentioning

confidence: 99%

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Evolution of Geocells as Sustainable Support to Transportation Infrastructure

Krishna,

Latha

2023

Sustainability

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Geocells, which are polymeric interconnected cells filled with soil, provide excellent support to loads through all-round confinement and a beam effect; hence, they are extensively used in various geotechnical applications such as embankments, foundations, pavements, slopes, railways, and reinforced earth (RE) walls. Although the applications of geocells are studied extensively, their geometric and parametric evolution as a stable support to heavy loads receive less attention. The current versatile configuration of geocells has geometrically evolved after accounting for all the factors that give them optimum reinforcement efficiency. This paper presents a state-of-the-art review of the geometric evolution of geocells in the context of transportation geotechnical engineering. Effects of shape, size, stiffness, and surface roughness of geocells, and properties of infill and native soils on the performance of geocells are compiled from the literature to get important design insights. The application of geocells in pavements is discussed, concluding that geocells improve the cyclic load carrying capacity and resilient characteristics of pavement, reduce rut depths, and increase traffic benefit ratio (TBR). Hence, geocells can be a sustainable alternative to natural materials in transportation infrastructure, with the added advantages of reduced carbon footprint and maintenance costs.

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Section: Geocells In Transportation Applicationsmentioning

confidence: 95%

Section: Geocells In Transportation Applicationsmentioning

confidence: 99%

Evolution of Geocells as Sustainable Support to Transportation Infrastructure

Krishna,

Latha

2023

Sustainability

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“…Reinforced earth structure, due to its light weight, low cost, and strong foundation adaptability, has been widely used in the support structure of road, water transport, water conservancy, railway and other civil engineering projects and the reinforcement of embankments. The geocell [2] applied to the granular foundation layer shows a relatively better improvement, reducing the permanent deformation of the granular foundation and increasing the percentage of elastic deformation [3] . Placing a layer of 0.3m thick reinforced material in the non-woven geotextile [4] and compacting the soil at 97% significantly reduces the penetration force of the CBR piston at all target repeated load levels.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of re-packed reinforced Earth embankment during service stage

Hou

Wang

Huang

et al. 2021

Journal of Asian Architecture and Building Engineering

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： Problems of large settlements and uneven settlements on the road always happen during service stage. Reinforced embankments can reduce these problems. But currently the study on the mechanical properties of reinforced embankments during service stage are so few, and lack of measured data. This study uses numerical simulation and on-site measured data analysis to set up a geogrid creep damage model and traffic load model. Based on the analysis of the mechanical properties of reinforced embankment under the conditions of new test section and widening test section, the influence laws of traffic load amplitude, frequency and driving interval on reinforced embankment are obtained. When the traffic load amplitude is 2 0 , there is little difference in settlement between the two test sections, but the settlement ratio gets the maximum value of 0.028 mm/d when the amplitude is 2 0 . When the traffic load frequency increases from 1 Hz to 4 Hz, the embankment settlement is in the sudden settlement stage, and the settlement is almost stable after 4 Hz. When the driving interval is greater than 4 s, the rebound value and rebound time are almost stable.

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“…Numerous researchers have conducted geotechnical laboratory tests and numerical simulations to study the effectiveness of geocell-reinforced structures. For example, Adams and Collin, and Mehrardi et al (6,7) carried out geotechnical laboratory tests and confirmed that using geocell for reinforcement in structures can improve the bearing capacity several times; Kumawat and Tiwari (8) carried out a series of geotechnical laboratory tests to study the performance of fly-ash embankment reinforced with geocell and to compare the permanent deformation of reinforced embankment with unreinforced embankment, the results showed that the permanent deformation of the reinforced embankment is much more minor than the unreinforced embankment, and the bearing capacity of the reinforced embankment is increased by three or four times; Han et al (9) studied the reinforcement mechanism of the interaction between sand and geocell through FLAC3D numerical software, which demonstrated that the ultimate bearing capacity of sand could be enhanced by geocell; Borges and Cardoso (10) investigated the relationship between the elastic modulus of geocell and the stability of an embankment by numerical simulation, and the results showed that the length and elastic modulus of geocell have an effect on the stability of an embankment; Hegde and Sitharam (11) carried out geotechnical laboratory tests and a numerical simulation to study the performance of deformation of several PVC pipes that were covered by a geocellreinforced sand cushion, and the results showed that the geocell-reinforced sand cushion can significantly reduce the deformation of the pipes compared with other types of geosynthetics; Kumar and Saride (12) conducted a series of tests to compare the loading performance of geocell-reinforced and unreinforced embankments, and proved that the cumulative plastic deformation and rutting depth of the structure can be significantly reduced by geocell; Madhavi Latha and Manju (13) investigated the mechanical performance of a geocellreinforced retaining wall under seismic loading, and the results showed that the geocell-reinforced retaining has strong seismic performance; Khan et al (14) studied the effectiveness of geocell-reinforced recycled asphalt pavement (RAP) base (GRRB) by adding geocell to the RAP material of constructed pavement, and indicated that GRRB can effectively control the subgrade deformation so as to enhance the performance of pavement.…”

mentioning

confidence: 99%

Study on Mechanical Performance and Reinforcement Mechanisms of Geocell-Reinforced Soil

Zhu,

Li,

Wang

et al. 2023

Transportation Research Record: Journal of the Transportation R

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A concept for a reinforcement mechanism is presented and analyzed combined with test results to explain the reinforcement effect of a geocell. A series of pull-out and unconfined compression tests were carried out to investigate the effect of various parameters, including water content, compactness, and the number of geocell-reinforced layers, on the mechanical performance of geocell-reinforced soil. The results of the pull-out tests were mutually verified by the formulas for the reinforcement mechanism and demonstrate that the compactness and water content significantly affect the friction coefficient of the geocell–soil interface, which increases as compactness rises and water content falls. Compared with lowering the water content, improving compactness was better for enhancing the frictional properties of the geocell–soil interface; this had the highest increase, at 90%, as compactness rises from 92% to 94%. According to the unconfined compression test results, the unconfined compressive strength of geocell-reinforced soil is raised by higher compactness, more geocell-reinforced layers, and lower water content; this had the highest increase, at 93.1%, as the water content dropped to its optimum, from 19% to 15%. The compactness of filled soil dramatically influences the unconfined compressive strength of unreinforced specimens, which had an increase of 59.6% when compactness rose from 92% to 94%. However, this effect was weakened as more geocell was added to filled soil. As the number of geocell-reinforced layers rose from 0 to 1 under the compactness level of 92%, the increase of ultimate unconfined compressive strength reached 82.6%, higher than in other reinforcement layers.

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Rutting Behavior of Geocell Reinforced Base Layer Overlying Weak Sand Subgrades

Cited by 26 publications

References 7 publications

Evolution of Geocells as Sustainable Support to Transportation Infrastructure

Evolution of Geocells as Sustainable Support to Transportation Infrastructure

Mechanical properties of re-packed reinforced Earth embankment during service stage

Study on Mechanical Performance and Reinforcement Mechanisms of Geocell-Reinforced Soil

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