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Showing 1 to 20 of 53 for “"geotextile"”.
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Finite Element Analysis of Geotextile Tubes
The three-dimensional behavior of geotextile tubes is studied using finite element modeling. Two initial shapes are investigated, one with a flat length-to-width ratio of 2:1 and the other with a flat length-to-width ratio of 5:1. The tubes are modeled resting on elastic foundations. For each …
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Geotextile Tubes and Their Application to Dewatering
<p>Geotextile tubes are a proven cost-effective technology offering speed, efficiency, and minimal impact to the environment for dewatering of sediment or sludge from dredging operations. Common applications include: removal of solids from municipal water and waste water treatment, agricultural …
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Use of wicking geotextile to dehydrate road embankments
… water induced problems using a new wicking geotextile. Firstly, a series of laboratory test results were performed to characterize the mechanical and hydraulic properties of the wicking geotextile, the soil, and their interactions. After that, the laboratory test results were used as …
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Laboratory performance of geogrid and geotextile reinforced flexible pavements
Geotextile and geogrid reinforcement in flexible pavements were evaluated to determine potential benefits. Laboratory pavement sections were constructed, tested, and analyzed to assess the performance of reinforced pavement sections compared to sections without geosynthetic reinforcement. The …
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A Scrolling Geotextile Fabric Filter Device for Primary Clarification
… investigated the feasibility of using a portable geotextile fabric based filtering device to remove suspended solids from raw sewage. This device was considered to replace a conventional primary clarifier. The proposed filtration process directs wastewater influent through a geotextile fabric …
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Experimental and numerical investigation into the Sand/Geotextile shear interaction behaviour
Geotextiles are planar polymeric textile materials which are utilised in geotechnical engineering in various applications, including the reinforcement of soils which is achieved by laying geotextile sheets horizontally to carry the induced horizontal stresses. The behaviour of such reinforced soil …
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An Investigation into the Effects of Asperities on Geomembrane/Geotextile Interface Shear Characteristics
… usually used alongside other geosynthetics like geotextiles in landfills to constitute base, side-slope, and cover liner systems. Uniquely, within the side-slope liner composite system, which consists of multiple geosynthetics interfaces, the geomembrane/geotextile (GMB/GTX) interface is known to …
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Effect of grading and grain size on the friction characteristics of a sand/geotextile inteface
… addresses the reinforcement function whereby geotextiles are utilised as reinforcing elements in reinforced slopes and fills. It particularly focuses on the soil/geotextile interface behaviour. Geotextile reinforcements transfer a majority of the shear stress from the soil to the reinforcement …
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Utilização de geotêxteis como reforço de aterros sobre solos moles
This thesis presents a study on geotextile application for stabilizing low embankment roads constructed on weak foundation soils. A bibliography review on the main characteristics of some commercially available geotextiles, their physical and mechanical properties, usual manufacturing process and …
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Ensaios de filtração em solos com geotêxteis
The present work is a study of geotextile filter behaviour. Initially, it presents the usual parameters to describe the geotextiles characteristics, the involved phenomena in the geotextile-soil interaction and the more accepted criteria for geotextile filter selection. Supported by previous …
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Filtration behaviour of non-woven geotextiles in the gradient ration test
… which have a D85 from 70 Am, with four nonwoven geotextiles, which have a filtration opening size (FOS) from 60 Am to150 Am. No observations of impending clogging were made, however piping occurred in some tests. A ratio of FOS/D85 < 1.5 has been found to be appropriate effective retention of …
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An investigation of the effect of dynamic and static loading to geosynthetic reinforced pavements overlying a soft subgrade
… study, reinforcement geosynthetics (geogrids and geotextiles) were used as reinforcement inclusions within a granular base overlying a soft subgrade of California Bearing Ratio (CBR) less than 2% in a 1.0 m3 steel test box. Firstly, a geotextile/geogrid was placed at the interface between the base …
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ΘΕΩΡΗΤΙΚΗ ΚΑΙ ΠΡΑΚΤΙΚΗ ΔΙΕΡΕΥΝΗΣΗ ΤΗΣ ΕΦΑΡΜΟΓΗΣ ΤΩΝ ΓΕΩΦΑΣΜΑΤΩΝ ΣΤΗΝ ΕΝΙΣΧΥΣΗ ΔΡΟΜΩΝ ΧΑΜΗΛΗΣ ΚΥΚΛΟΦΟΡΙΑΣ
… CONCERNING THE PROPERTIES AND APPLICATIONS OF GEOTEXTILES. 2. FUNCTIONS ACCOMPLISHED BY A GEOTEXTILE LAID IN THE INTERFACE BETWEEN ANUNPARED PAVEMENT AND THE SUBGRADE. 3. PRESENTATION OF THE RESEARCH ARTICLES CONCERNING THE DESIGN OF WEAK PAVEMENTS EITHER REINFORCED OR NOT WITH GEOTEXTILES. 4. …
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In-Situ Behavior of Geosynthetically Stabilized Flexible Pavement
The purpose of a geotextile separator beneath a granular base, or subbase in a flexible pavement system is to prevent the road aggregate and the underlying subgrade from intermixing. It has been hypothesized that in the absence of a geotextile, intermixing between base course aggregate and soft …
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Ageing of HDPE Geomembranes Used to Contain Landfill Leachate or Hydrocarbon Spills
… antioxidant depletion rate is observed when geotextile-geosynthetic clay liner and geotextile-sand-geotextile are applied than with a typical geotextile alone. This could be partially attributed to the attenuation of leachate constituents by the protection layer as well as the buildup of …
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Geomorphology and rehabilitation of erosion-degraded areas using soil bioengineering in the Rio Bacanga basin, São Luís, Maranhão State
… using soil bioengineering techniques (using geotextiles constructed from palm leaves of the Buriti tree). Mapping showed that identified gullies are located on the plateau edges of the basin and are very fragile environments. The greatest interval of vegetation cover index development was …
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Improving the design, construction, and maintenance of Permeable Interlocking Concrete Pavement (PICP) in South Africa
… layers and potentially the subgrade. A geotextile may be fitted between the bedding and base layers and/or base layer and subgrade. However, many PICP installations in South Africa have prematurely failed through clogging. While some failures can be attributed to poor design, …
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Calculating and Limiting Local Strains in Geomembranes From Gravel Indentations
… size of the overlying gravel, and mass of the geotextile protection layer influence local geomembrane strains. Results are provided that can be used to rule out protection layers that are unable to meet a long-term strain limit, and conversely, identify those that may be able to limit strains …
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Interlayer stress absorbing composite (ISAC) for mitigating reflection cracking in asphalt concrete overlays
… in use, a composite material consisting of two geotextile layers containing a thin viscoelastic rubber asphalt layer named, ""Interlayer Stress Absorbing Composite (ISAC)"" was proposed."
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Mechanistic-Empirical Pavement Design Procedure For Geosynthetically Stabilized Flexible Pavements
… base course. Three sections were stabilized with geotextiles and three with geogrids at the base course-subgrade interface. The remaining three sections were kept as control sections. One of each stabilization category was included in each base course thickness group. The hot-mix asphalt (HMA), …
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