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Showing 1 to 20 of 35 for “"Geosynthetics"”.
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Containment of Organic Contaminants Using Geosynthetics
The use of geosynthetics to contain volatile organic compounds (VOCs) and polychlorinated biphenyls (PCBs) in composite liner systems is evaluated through laboratory and field experiments. Diffusive parameters for benzene, toluene, ethylbenzene, and xylenes (BTEX) and PCBs through geomembranes are …
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Pavement sustainability optimization using quarry by-products and geosynthetics
… of the production of aggregates. The use of geosynthetics and QB in unbound material pavement applications can mitigate the high demand for natural aggregates, thus reducing the depletion of natural aggregates, environmental emissions, and energy consumption caused by stockpiling of QB and …
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An Investigation of the Effects of Specimen Gripping Systems on Shear Stress at the Geosynthetic/Geosynthetic Interface in Landfill Applications
The use of geosynthetics has rapidly increased in nearly all geotechnical related fields as they allow for innovations, improved performance and cost effectiveness in projects. However, when geosynthetics are installed on sites, particularly on landfill slopes, their interface interaction against …
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Comparison of shear strength properties of textured polyethylene geomembrane interfaces in landfill liner systems
… shear strength between geomembranes and geosynthetics is a critical factor governing the stability of slopes that incorporate geosynthetics. In order to better characterise the shear properties of geomembranes, a wide-range of shear strength friction measurements were conducted. This …
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SEISMIC ANALYSES OF SLOPE STABILITY AND LIMITING EARTH PRESSURES ACTING ON RETAINING STRUCTURES
… installation of stabilizing piles and/or geosynthetics are commonly used, and the seismic stability of reinforced slopes with piles or geosynthetics was analysed, considering the pseudo-static/-dynamic approaches.
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Geosynthetic stabilization of unpaved roads on soft ground : a field evaluation
… out to investigate the performance of different geosynthetics in unpaved road construction over soft ground. The test site comprises five 16 m long, by 4.5 m wide test sections, built on a subgrade of undrained shear strength approximately 40 kPa. One is unreinforced and serves as a control …
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Designing Operations of Geocomposite Membrane Installation in Flexible Pavements
… alternatives without expensive installations. Geosynthetics are currently being incorporated in flexible pavement systems to improve their performance. However, geosynthetics must be used in the correct application and installed properly in order to produce good results. One of the newly …
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A Comparative Study on Shear Strength Testing of Single and Multi-layer Interfaces using Large Direct Shear Apparatus
… interfaces, which include a broad range of geosynthetics in conjunction with soil, rocks and any other related materials. This results in the introduction of many interface planes into the structure, which can potentially create instability especially along the slope and ultimately result in …
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A structure from motion photogrammetric method for continuously measuring and tracking the deformations of soils during triaxial testing
… the 3-D full-field displacements/strains of geosynthetics in tensile test. It can identify any localized strains at any location within the geosynthetics specimen"--Abstract, p. iv</p>
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Determination of Optimum Tack Coat Application Rate for Geocomposite Membrane Use in Roads and Overlaid Bridge Decks
… are in need of maintenance and rehabilitation. Geosynthetics may have the potential to provide a long-term solution to some of the problems that are present in these roads and bridges. When installed properly, some geosynthetics can act as both a moisture barrier and stress absorption layer. …
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Reinforcement of pavement subgrade using granular fill and a geosynthetic layer
… strength of the soil structure. The use of geosynthetics in soil offers a better alternative to improvement of the soil's stability. This research was conducted to determine the degree of improvement of the load-bearing capacity and reduction in settlement due to geosynthetic reinforcement …
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An Investigation into the Effects of Asperities on Geomembrane/Geotextile Interface Shear Characteristics
… they are 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) …
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Laboratory Performance of Geosynthetic-Stabilized Pavement Sections
… types: one which was constructed without geosynthetics and which served as a control, and three which were stabilized with one of two geotextiles or a geogrid. The pavement sections were constructed to model a typical secondary road in Virginia which is constructed over a silty sand …
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The Impact of a Planar Drainage Geocomposite in Unsaturated Soil
… with engineered fills, often combined with geosynthetics, and more recently with standalone geosynthetics designed for the express purpose of drainage. One such geosynthetic is DrainTube®, comprised of a PET (polyester) filter, PP (polypropylene) drainage blanket, and perforated PP …
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A study of the response of geosynthetic reinforced flexible pavement test sections to dynamic loading
… road built over a weak subgrade. Three types of geosynthetics were used: two types of woven geotextiles; and a geogrid. The test sections were constructed, cyclically loaded, and the resulting data were collected and analyzed. The performance of reinforced test sections was compared to that of …
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Three-Dimensional Finite Difference Analysis of Geosynthetic Reinforcement Used in Column-Supported Embankments
… soil-structure interaction. Current models of geosynthetics are oversimplified and do not represent the true three-dimensional nature of the material. Such simplifications include treating the geosynthetic as a one-dimensional cable as well as neglecting stress concentrations and pile …
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TREE ROOT ENCROACHMENT ON LEVEE DRAINAGE SYSTEM
… to evaluate the effectiveness of two types of geosynthetics as root barriers. A geotextile and a geocomposite were tested in v clear columns filled with soil and/or gravel to simulate six different drainage designs. Two New Mexican plants, Rio Grande cottonwood (Populus deltoides ssp. …
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Laboratory investigation of soil reinforcement using shredded waste plastic bottles
… from Kaytech (supplier and manufacturer of Geosynthetics) in South Africa. The research was done to utilize this plastic through the inclusion of shredded plastic bottles as a form of soil reinforcement. The effects of introducing polyethylene shreds cut from used plastic bottles on the …
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An investigation of the effect of dynamic and static loading to geosynthetic reinforced pavements overlying a soft subgrade
… its design life. In this 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 …
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Investigation of Required Tensile Strength Predicted by Current Reinforced Soil Design Methodologies
… Stabilized Earth Walls (MSEW) reinforced with geosynthetics. Both GRS and MSEW are reinforced soil technologies that use reinforcement to provide tensile capacity within soil masses. However, the soil theories behind each method and the design methodologies associated with GRS and MSEW …
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