Geosynthetic subgrade stabilization – Field testing and design method calibration

Cuelho, Eli; Perkins, S W

doi:10.1016/j.trgeo.2016.10.002

Cited by 39 publications

(17 citation statements)

References 9 publications

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“…When the water level rises higher than the crown, the stress analyses are supplemented with the additional boundary shear stress along the crown and landside slope. Additionally, a trapezoidal stress is applied over the crown during overflow to simulate water pressure, corresponding to the height of water on the upstream side, and to the water height on the downstream side calculated by Equation (10). Given that this aspect goes beyond standard analyses, a cautious evaluation of these shear stresses is required.…”

Section: Methodsmentioning

confidence: 99%

“…At a later date, around 1980, geogrids were developed [2]. Nowadays, geosynthetics are widely used in various fields of geotechnical engineering, such as shallow footing to increase bearing capacity and decrease settlement [3][4][5], retaining walls [6][7][8], and road construction [9,10]. When used in levees, their benefit has also been shown in decreasing settlement of levees on soft soil [11] and increasing slope stability [12], or both.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fragility Curves for Slope Stability of Geogrid Reinforced River Levees

Rossi

Bačić

Kovačević

et al. 2021

Water

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When constructing flood protection structures such as river levees, oftentimes due to various factors engineers must design composite structures, i.e., reinforced earthen structures which comply with all the stability criteria. The most common way of reinforcing such structures is the usage of geosynthetics, or mostly geogrids when talking about stability. Since geosynthetics are man-made materials produced in a controlled environment and go through quality control measures, their characteristics contain a negligible amount of uncertainty compared to natural soils. However, geosynthetic handling, their installation in the levee, and their long-term degradation can all have significant effects of variable magnitude on geosynthetic characteristics. These effects and their variability can be considered as random variables, which can then be used in probabilistic analyses together with soil properties. To investigate the effects of the geogrid’s resistance variability on slope stability compared to soil properties variability, probabilistic analyses are conducted on a river levee in northern Croatia. It is found that the geogrid’s variability generally has very little effect on the total uncertainty compared to the friction angle’s variability, but out of the three geogrid layers used the top grid has the most influence.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fragility Curves for Slope Stability of Geogrid Reinforced River Levees

Rossi

Bačić

Kovačević

et al. 2021

Water

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“…En la investigación realizada por Cuelho y Perkins se construyeron secciones de prueba para comparar el rendimiento operativo de geosintéticos en la estabilización de subrasantes [10]. Se edificaron 12 geosintéticos formados por una variedad de geomallas y geotextiles, además de secciones de prueba para evaluar el efecto que la resistencia de la subrasante, el grosor de la capa base y la presencia del geosintético e-ISSN 2357-6014 / Vol.…”

Section: Revisión De Literaturaunclassified

Análisis de los cambios en las propiedades mecánicas de materiales de subrasante por la adición de materiales poliméricos reciclados

Rodríguez¹,

González²

2019

ing. Solidar

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Introducción: este artículo es producto de la investigación “Análisis de la resistencia y durabilidad de un suelo de cemento adicionando material no biodegradable polietileno malla Raschel (polisombra) reciclada en diferentes porcentajes en relación con el peso del suelo”, desarrollada en la Universidad de la Salle durante el 2016. Problema: identificación de las variaciones en las propiedades mecánicas de materiales de subrasante por la adición de materiales poliméricos. Objetivo: recopilar las principales investigaciones sobre las modificaciones de las propiedades de subrasante por medio de adición de fibras naturales y sintéticas, con el fin de tener una base teórica que justifique la aplicación de estas adiciones a nivel constructivo. Metodología: recopilación de bibliografía relevante sobre modificación de subrasante con polímeros y la evaluación del cambio en sus propiedades mecánicas, síntesis y discusión de resultados. Resultado: el 65 % de las investigaciones encontradas corresponde a estudios sobre las modificaciones de la resistencia a la compresión; el 30 % de ellas están dirigidas a estudios enfocados a estudiar la respuesta de los esfuerzos de tracción cuando son fibras poliméricas; y el otro 5 % evalúa propiedades como la fatiga o resistencia a la tensión axial. Conclusiones: se apunta un aumento considerable en la resistencia de compresión, que varía según el tipo o material a mezclar con el suelo y cemento. Originalidad: este artículo presenta la sustitución de materias primas de la subrasante con fibras naturales o sintéticas recicladas. Limitaciones: hasta ahora son pocas las investigaciones que se han encaminado a desarrollar modificaciones de los materiales en la subrasante con fibras naturales; por consiguiente, la información para analizar se ve limitada.

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“…[7,13,[15][16][17][18][19][20]. Researchers have also shown that some of these additive substances in their amorphous ash form possess cementing properties because of the alumina-silica composition which classify them as pozzolanas [21][22][23]. The optimization of the properties of the lateritic soils treated with these additives has been researched upon in recent times employing different mathematical approaches to reduce the task involved in making decisions and studying the performance of these constructed facilities.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Waste Paper Ash Treated Lateritic Soil and Its California Bearing Ratio Optimization

Onyelowe¹

2017

Global J Technol Optim

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The stabilization potentials of NWPA and the CBR optimization were investigated on the treated olokoro lateritic soil. The soil was classified as an A-2-7 soil according to AASHTO classification method. From the stabilization procedure, it has been found that the admixture improved the strength characteristics of the stabilized lateritic soil for use as base material in pavement construction. With the laboratory results, a nonlinear regression relationship was formulated through the multiple regression algorithms for the California bearing ratio (R) as a dependent variable with optimum water content (w), maximum dry density (D), and percentage by weight additive of NWPA (SA) as the independent variables. The nonlinear relationship was linearized to enable the optimization operation with Simplex Linear Programming (Optimization) to be conducted. This iteration procedure was conducted and the results showed that the CBR (R) was optimized at R max =219.16% with x 1 = 48.103, x 2 =4.833, x 3 =13.45, and x 4 = 0.948 in the stabilization of lateritic soils with NWPA as an admixture applied in the percentages of 0, 3, 6, 9, 12, and 15%.

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Geosynthetic subgrade stabilization – Field testing and design method calibration

Cited by 39 publications

References 9 publications

Fragility Curves for Slope Stability of Geogrid Reinforced River Levees

Fragility Curves for Slope Stability of Geogrid Reinforced River Levees

Análisis de los cambios en las propiedades mecánicas de materiales de subrasante por la adición de materiales poliméricos reciclados

Nanostructured Waste Paper Ash Treated Lateritic Soil and Its California Bearing Ratio Optimization

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