Relevant bibliographies by topics / Drainage geocomposite

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  1. Journal articles

Academic literature on the topic 'Drainage geocomposite'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "Drainage geocomposite"

1

Cholewa, Mariusz, and Karol Plesiński. "Performance Comparison of Geodrain Drainage and Gravel Drainage Layers Embedded in a Horizontal Plane." Materials 14, no. 21 (2021): 6321. http://dx.doi.org/10.3390/ma14216321.

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Drainage materials are widely used, among other uses, in the construction of landfills. Regulations require a drainage layer in the base and a covering for the landfill. The implementation of a gravel drain requires a lot of material and financial outlays. New geocomposite materials are an alternative, and facilitate construction. The aim of the research was to compare the drainage properties of the Pozidrain 7S250D/NW8 geocomposite and gravel drainage. The model test was performed on a specially prepared test stand. The research was carried out for model #1, in which the gravel drainage was built. Model #2 had a drainage geocomposite built into it. The test results show the values of the volumetric flow rate for geodrains, with a maximum value of 40 dm3·min−1. For the gravel layer, values of up to 140 dm3·min−1 were recorded. Another parameter recorded during the damming of water by the embankment was the speed of water suction by the geosynthetic and gravel drainage; the values were 0.067 and 0.024 m3·s−1, respectively. The efficiency of water drainage through the geocomposite was sufficient. It is possible to use the slopes of the landfill for drainage, which will reduce material and financial outlays.
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2

Vasilyev, Sergey Mikhailovich, Yuri Mikhailovich Kosichenko, and Oleg Andreevich Baev. "New Types of Geo-Composite Materials for Anti-Filtration Systems." Solid State Phenomena 316 (April 2021): 1031–37. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.1031.

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The article discusses the results of studies of new types of geocomposite materials used for anti-filtration and drainage purposes in hydraulic engineering and environmental protection construction. As the main elements, the presented geocomposite materials include various types of synthetic materials – bentonite mats and profiled geomembrane. A distinctive feature of these materials is the inclusion of additional elements of geotextile material or polymer geomembrane in their design, these elements are connected to the main element by thermal bonding. As a result, the combined geocomposite materials acquire new properties: they become more waterproof and durable. At the same time, waterproof materials are used for anti-filtration systems (as screens and coverings for canals, ponds, dams and various types of waste collectors), and previous material are used for drainage systems (as drainage in hydraulic and civil engineering). New types of geocomposite materials have improved properties on water resistance and water permeability (filtration coefficient), durability and strength.
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3

Mankodi, Hireni. "Geocomposite Manufactured from PP Nonwoven/HDPE Geonet." Advanced Materials Research 622-623 (December 2012): 1310–13. http://dx.doi.org/10.4028/www.scientific.net/amr.622-623.1310.

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Geogrids are used as reinforcement materials for soil foundation structure in the geotechnical applications. Also, geogrids have the excellent tensile strength and modulus and therefore, geogrids can show the good reinforcement function within the soil foundation structure that the loads are concentrated. However, geogrids don't have the excellent efficiency to control the migration and loss of fine soil particles to be passed due to the large apertures (opening size).The new concept of reinforced geotextile composites, which can show both functions of reinforcement and separation/drainage and was manufactured by combining nonwoven geotextiiles and geogrid or geonetusing adhesive or thermal bonding process. Geotextile-Geonet Composites compose of geotextile-geonet-geotextilesandwich use for separation and filtration functions. Hence the objective of this study is to manufacture geocomposite for easy installation and better stability of sandwich material in soil condition. This geocomposites are evaluated for its performance.
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4

Szatmári, T., and S. Fischer. "Performance of drainage geocomposites applied as capillary break layers." IOP Conference Series: Materials Science and Engineering 1260, no. 1 (2022): 012029. http://dx.doi.org/10.1088/1757-899x/1260/1/012029.

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Abstract The phenomenon of capillary rise can cause water rise up 2-3m above the high water table within the soil. Due to this effect the shear strength of fine-graded soil is decreased, or it can damage decorative floorings, paved areas, concrete and different manmade structures. Furthermore, in arid regions the ground water is often saline with a high concentration of chloride ions, which can be harmful to vegetation. The traditional methods to solve the above mentioned problems with breaking the capillary rise can be the use of free draining granular soil with very low fines contents, usually with 30 to 50 cm thickness. One of the effective capillary break methods is creating an air void between the soil layers with the help of drainage geocomposites therefore capillary rise of water is prevented. This paper presents the research work of the above described capillary break phenomenon with different types of geocomposite drainage layers in laboratory controlled conditions.
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5

Henry, Karen S., and Robert D. Holtz. "Geocomposite capillary barriers to reduce frost heave in soils." Canadian Geotechnical Journal 38, no. 4 (2001): 678–94. http://dx.doi.org/10.1139/t01-010.

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We investigated the potential for geosynthetic capillary barriers to reduce frost heave in soils by freezing upright, cylindrical soil specimens with horizontal disks of geosynthetics placed in them. During freezing, water was freely available at 25 mm above the base of 150 mm high specimens. The geosynthetics were located 5 mm above the water supply. We measured frost heave and final water content profiles of specimens containing geosynthetic capillary barriers and control specimens. The thermal conditions of the tests were typical of pavements in cold regions. Geotextiles prepared to simulate field conditions (i.e., moistened and containing soil fines) failed to significantly reduce frost heave. However, geocomposites comprising needle-punched polypropylene geotextiles sandwiching a drainage net, prepared in the same way as the moistened geotextiles containing soil fines, reduced frost heave when the soil water suction head in the overlying soil was 1800 mm or more. The geocomposites did not significantly reduce heave when the soil water suction head in the overlying soil was 800 mm or less. This is probably due to water migration between the two layers of soil, through the geotextiles and along the net of the geocomposite.Key words: capillary barrier, frost heave, geosynthetic, geotextile, geocomposite, soil freezing.
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6

Ke, Han, Yunmin Chen, and Delwyn G. Fredlund. "Steady-state drainage in a liquid collection system with two different slopes." Canadian Geotechnical Journal 47, no. 4 (2010): 377–87. http://dx.doi.org/10.1139/t09-090.

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Liquid collection layers are commonly used as part of modern landfills. These collection layers are often composed of two sections with different slopes. Design methods are presently available for limited cases where there is no drain at the connection between the two sections. This paper presents a computational solution based on the Dupuit assumption to calculate the maximum liquid depth and provide the liquid profile for the drainage systems comprising two different slopes. A case study showed that, in most cases, the maximum depth of the downstream section is determined by the total horizontal length of the two sections, the slope of the downstream section, and the inflow rate. The application of a geocomposite in the downstream section can significantly reduce the maximum liquid depth in both the upstream and downstream sections of the drainage system. The application of a geocomposite in the upstream section can only influence the maximum depth in the upstream section of the drainage system. Simplified procedures are proposed that can estimate the maximum depth in the upstream and downstream sections if the drainage layer consists of one material.
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7

Campos, Jéssica C. D., Roberta Passini, and Kaio F. M. do Nascimento. "Thermography and physiology of stress in dairy calves in outdoor holding pens covered with geosynthetics." Revista Brasileira de Engenharia Agrícola e Ambiental 25, no. 11 (2021): 787–93. http://dx.doi.org/10.1590/1807-1929/agriambi.v25n11p787-793.

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ABSTRACT This study aimed to assess the environmental variables, thermal comfort indices and physiological responses of calves in outdoor holding pens shaded with geosynthetics. Twenty crossbred females (Giroland, Jersey and Holstein) in the suckling phase (from birth to 90 days old) with an average initial live weight of 40.6 kg were used. A completely randomized block design was used, in a 4 × 3 factorial scheme with five replicates. The roofing materials (polyethylene mesh, geocomposite drainage layer, nonwoven geotextile and woven geotextile) were the first factor and time periods (8 to 10 a.m., 12 to 2 p.m. and 4 to 6 p.m.) the second factor. The following environmental variables were measured to calculate thermal comfort indices: temperature-humidity index, black globe-humidity index and enthalpy. The physiological variables analyzed were respiratory rate, rectal temperature and skin temperature. Environmental variables and thermal comfort indices did not differ between the different roof types, however, a significant difference (p ≤ 0.01) was observed between the time periods, with 12 to 2 p.m. being the most critical period. The lowest average respiratory rate (60.3 breaths min-1) and rectal temperature (38.9 °C) were recorded for the animals kept under the geocomposite drainage layer roof. There was a significant difference (p ≤ 0.05) for interaction between treatment and time periods for the cannon area. The geosynthetics studied can be used as roofing material for outdoor holding pens, with the geocomposite drainage layer being the most indicated for tropical regions.
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8

ÖZDOĞAN DÖLÇEK, Ayşe. "Laboratory Experiments on Performance Evaluation of Geocomposite Drainage Materials." Sakarya University Journal of Science 26, no. 1 (2022): 38–53. http://dx.doi.org/10.16984/saufenbilder.962783.

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9

Khire, Milind V., and Mazen M. Haydar. "Leachate Recirculation in Bioreactor Landfills Using Geocomposite Drainage Material." Journal of Geotechnical and Geoenvironmental Engineering 133, no. 2 (2007): 166–74. http://dx.doi.org/10.1061/(asce)1090-0241(2007)133:2(166).

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10

Forogo, B. W., G. Stolz, M. Coquery, S. Bonelli, N. Chaouch, and N. Touze. "Innovative geocomposite for dredged sediments depollution." IOP Conference Series: Materials Science and Engineering 1260, no. 1 (2022): 012017. http://dx.doi.org/10.1088/1757-899x/1260/1/012017.

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Abstract In France, sediments from river dredging are considered as waste. Without any special treatment, they must be stored in landfills. The dredged sediments of our area of study (North of France) are polluted with trace metals (antimony and zinc are above the French regulation threshold). The main objective of this study is to develop a new method of active depollution and dewatering treatment in order to enable the reuse of treated sediments. This treatment is carried out through ponds equipped with innovative geocomposite. This innovative geocomposite has two typical passive functions (filtration and drainage). In addition, it is functionalized by an innovative electrokinetic technology to confer it active roles (depollution and dewatering). Electrokinetic consists in applying a difference of electrical potential to a porous medium. We present here the results of a preliminary laboratory study that simulates this new method on a short-term (3 weeks) experiment. The results show that the electrokinetic treatment has an impact on the chemical and physical properties of sediments. The treatment reduces by 50% the concentration of zinc in the leachate after lixiviation.
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