Evaluating long-term benefits of geosynthetics in flexible pavements built over weak subgrades by finite element and Mechanistic-Empirical analyses

Zadehmohamad, Mehdi; Luo, Ning; Abu-Farsakh, Murad; Voyiadjis, George Z.

doi:10.1016/j.geotexmem.2022.01.004

Cited by 12 publications

(4 citation statements)

References 26 publications

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“…However, it should be noted here that the geotextile used in this study has much higher tensile modulus than the geogrid used. The results of recent finite element analysis indicated that geogrids placed at the base–subgrade interface usually perform better than geotextiles of the same tensile modulus ( 29 ).…”

Section: Test Resultsmentioning

confidence: 99%

Quantifying the Benefits of Geosynthetics Reinforcement in Flexible Pavement Design Using Cyclic Plate Load Testing

Abu-Farsakh

Chen

Hanandeh

et al. 2022

Transportation Research Record

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Development of pavement design over the past decades has focused on moving from empirical design equations to more powerful and adaptive design schemes. The AASHTO mechanistic–empirical pavement design guide (MEPDG) has been developed to model pavement structure and predict its service life more accurately. Although MEPDG has been widely implemented to design conventional pavement, it is not yet capable of predicting the service life of pavement reinforced with geosynthetics. Given the above concerns, seven full-scale test sections that were constructed at Louisiana Transportation Research Center-Pavement Research Facility (LTRC-PRF) were devoted to a structural experiment to investigate the performance of geosynthetic reinforced pavements. The benefits of using geosynthetics to enhance the performance of pavements constructed over soft subgrades was evaluated using cyclic plate load testing. Cyclic load at a frequency of 0.77 Hz was applied through a 305 mm diameter steel plate. The test results clearly show the benefits of geosynthetics in significantly reducing pavement rutting. The test section with double geosynthetic layers performed better than the other six sections studied. After eliminating the effect of variations in construction, the benefits of geosynthetic reinforcement are quantified within the context of the AASHTOWare Pavement ME Design Guide. The developed design procedure is capable of quantifying the contribution of geosynthetics in pavements to base reinforcement as well as subgrade stabilization. A design methodology is proposed that falls within the context of MEPDG.

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Section: Test Resultsmentioning

confidence: 99%

Quantifying the Benefits of Geosynthetics Reinforcement in Flexible Pavement Design Using Cyclic Plate Load Testing

Abu-Farsakh

Chen

Hanandeh

et al. 2022

Transportation Research Record

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“…Diversos estudios se han realizado con el objetivo de analizar los beneficios de los geosintéticos vías pavimentadas y no pavimentadas [24,32,33]. Dicha eficiencia se determina mediante la relación de beneficio de tráfico por sus siglas en inglés TBR Traffic Benefit Ratio.…”

Section: Estado Del Arteunclassified

Desempeño de una vía no pavimentada reforzada con geomalla: construcción de un modelo físico en laboratorio y validación numérica

Bastidas-Martínez,

Herrera-Cano,

Bautista-Tapias

2024

DYNA

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Este estudio evaluó el comportamiento mecánico de un modelo físico laboratorial de una vía no pavimentada reforzada con una geomalla biaxial GB. Para tal fin, se compactaron 0.15 m de material de mejoramiento y 0.20 m de subrasante en una caja cuadrada de 0.35 m. Se realizaron ensayos con y sin refuerzo, mediante la aplicación de 10000 ciclos de carga dinámica en una maquina universal. Se utilizo una frecuencia de 2.5 Hz y presión de 560 kPa mediante una placa circular de 0.10 m de diámetro, simulando la circulación de una llanta de un eje rueda simple. La validación numérica vía Métodos de los Elementos Finitos (MEF) definió parámetros usando el modelo Hardening Soil. Como gran conclusión, se pudo evidenciar que el refuerzo con una geomalla reduce aproximadamente 45% la magnitud del ahuellamiento, según el modelo, debido a que la geomalla reduce la concentración de esfuerzos cortantes (τ relativo) disminuyendo la deformación plástica.

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“…The volume of traffic can be controlled to slow pavement degradation. As a result, pavement management must have a better understanding of traffic data and loads [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of a Corrugated Geogrid and Geocell Reinforced Flexible Pavement Base with Interlayer Shear Performance Analysis

Kumar,

Suman

2024

Period. Polytech. Civil Eng.

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To combat permanent deformation in flexible road pavements and extend lifespan while reducing maintenance costs, an investigated solution "Corrugated Geogrid and Geocell Reinforced Flexible Pavement Base Design" is proposed. It enhances durability by improving inter-layer bonding and increasing the friction coefficient with a Corrugated Imminent Hexagonal Composite Geogrid, boosting pavement bearing capacity. The necessity of this research is the integration of corrugated geogrids and geocells into the design of flexible pavement, in conjunction with a comprehensive evaluation of interlayer shear performance, effectively tackles a range of engineering obstacles and enhances the pavement system's durability, stability, and affordability. Geogrid's corrugated structure resists shoving, offers stabilization, and, combined with Fusion Geoblanket and Perforated Geocell, prevents potholes. Typically, geocellular brace parts are utilized in civil engineering and technical applications, and they are frequently connected to geocellular systems or geocells. These systems are frequently employed in the building of retaining walls, slope protection, erosion control, and soil stabilization. The intended use and product design influence the installation procedures and specific functioning approach. The proposed model prevents permanent pavement failures, ensuring durability, low maintenance, and improved lifespan, assessed through Finite Element Analysis. Thus, the proposed method develops a layout for flexible pavement that's going to prolong its life expectancy and prevent long-term deformation failure.

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Evaluating long-term benefits of geosynthetics in flexible pavements built over weak subgrades by finite element and Mechanistic-Empirical analyses

Cited by 12 publications

References 26 publications

Quantifying the Benefits of Geosynthetics Reinforcement in Flexible Pavement Design Using Cyclic Plate Load Testing

Quantifying the Benefits of Geosynthetics Reinforcement in Flexible Pavement Design Using Cyclic Plate Load Testing

Desempeño de una vía no pavimentada reforzada con geomalla: construcción de un modelo físico en laboratorio y validación numérica

Mathematical Modeling of a Corrugated Geogrid and Geocell Reinforced Flexible Pavement Base with Interlayer Shear Performance Analysis

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