Relevant bibliographies by topics / Geotextiles

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Geotextiles'

Author: Grafiati
Published: 4 June 2021
Last updated: 22 June 2024

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Journal articles on the topic "Geotextiles"

1

Choudhary, Nikita. "Jute Geotextiles as Substitute to Synthetic Geotextiles." Advanced Materials Research 821-822 (September 2013): 85–89. http://dx.doi.org/10.4028/www.scientific.net/amr.821-822.85.

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Jute based geotextile as a substitute to synthetic geotextiles has been reviewed in this study. The importance, advantage and disadvantage of Jute based geotextile have been highlighted. Geotextiles are permeable fabrics which, when used in association with soil, have the ability to separate, filter, reinforce, protect, or drain. The degrading condition of the environment and presence of non-biodegradable residues of geotexties as a pollutant has caught attention of scientific researchers. Ecological sustainability and environment has become one of the prime issues in the modern developmental strategy .Jute fibre has been found to be an alternate and potential geotextile material. Studies have shown that lifespan and engineering properties of jute based geotextiles can be suitably modified to suit its intended use.
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Liu, Weichao, He Li, Yan Yang, Peng Xu, Zhengjie Dai, Guangqing Yang, He Wang, and Zhijie Wang. "Study on Improvement Characteristics of a Novel Geotextile with Stitched Transverse Ribs." Applied Sciences 13, no. 3 (January 24, 2023): 1536. http://dx.doi.org/10.3390/app13031536.

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Geotextile is one of the reinforcement materials adopted in many engineering structures. Conventional geotextiles have a limited reinforcement effect due to the insufficient friction strength between geotextiles and soils. This paper proposes a novel type of geotextile with stitched transverse ribs to improve the reinforcement effect. A series of large-scale direct shear tests have been conducted, and the improvement characteristics between conventional geotextiles, geogrids, and the novel geotextiles have been studied. The results show that the novel stitched transverse rib geotextiles can significantly increase the shear strength compared to conventional geotextiles and geogrids. Moreover, due to the restraint and friction effect of ribs on the soils, the reinforcement effect of the novel geotextile is increased with increasing ribs. Insights from this study can provide a new understanding of the novel stitched transverse ribs geotextile’s reinforcement mechanism in engineering.
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3

Rowe, R. Kerry, Chris J. Caers, and Cliff Chan. "Evaluation of a compacted till liner test pad constructed over a granular subliner contingency layer." Canadian Geotechnical Journal 30, no. 4 (August 1, 1993): 667–89. http://dx.doi.org/10.1139/t93-057.

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The construction and evaluation of a compacted clayey till test pad constructed over a stone layer are described. The evaluation of the clayey liner involved (i) excavation of six test pits through the liner, followed by careful visual inspection for defects in the liner; (ii) sampling of the liner using standard 75 mm diameter Shelby tubes, a 150 mm diameter piston sampler, and block sampling; (iii) triaxial hydraulic conductivity tests on samples of liner material consolidated to a number of stress levels relevant to the proposed design; and (iv) diffusion tests on samples of liner material. Based on the results it is concluded that it was possible to construct a low-permeability liner (hydraulic conductivity less than 1.4 × 10−8 cm/s under expected field stress conditions). Geotextiles from above and below the compacted liner were carefully exhumed and subjected to a series of laboratory tests to examine (i) the effect of construction damage on the geotextile's strength; (ii) the effectiveness of the geotextile to minimize intrusion of the clay liner through the geotextile and into the stone layer(s) under expected field stress conditions; (iii) the effectiveness of the geotextile as a filter for the compacted liner material under high upward gradient conditions; and (iv) the friction angle between the geotextile and clay, and geotextile and stone. The geotextiles exhumed from the test liner showed some evidence of construction damage; however, based on the field observations and subsequent laboratory tests, it is concluded that they performed adequately. Key words : waste disposal, clay liners, geotextiles, field performance, hydraulic conductivity, landfills.
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Palmeira, E. M., R. J. Fannin, and Y. P. Vaid. "A study on the behaviour of soil–geotextile systems in filtration tests." Canadian Geotechnical Journal 33, no. 6 (December 1, 1996): 899–912. http://dx.doi.org/10.1139/t96-120.

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The behaviour of soil–geotextile systems in filtration tests is reported for nonwoven geotextiles under unidirectional flow. A new apparatus was developed to preform filtration tests under an applied vertical stress, and tests were then conducted with different soils and nonwoven geotextiles in order to evaluate the clogging potential and retention capacity of these materials under rather severe combinations of geotextile and soil characteristics. Results show that the geotextiles perfomed well and that observed permeability losses were acceptable even for gradient ratios close to 3. No progressive piping was observed, and it is believed that the retention capacity of the geotextiles may be influenced by their manufacturing process. In general, theoretical predictions for the maximum particle size passing through the geotextile compared well with measurements. Key words: geotextiles, filtration, gradient ratio, permeability, soil retention, clogging.
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5

Wang, Xu, Yonghong Zhang, Liqin Fan, and Jingli Shen. "Salt Drainage Efficiency and Anti-Clogging Effects of Subsurface Pipes Wrapped with Geotextiles." Water 16, no. 10 (May 14, 2024): 1392. http://dx.doi.org/10.3390/w16101392.

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Subsurface drainage pipes covered with filters and geotextiles are the key to preventing clogging and ensuring efficient drainage. To improve the salt discharge efficiency of these subsurface drainage pipes, different layers of geotextiles were set outside the pipes with the aid of uniform gravel filters. This paper reports our findings from laboratory simulation of subsurface drainage pipes and experiments. The study examined the influence of different layers of geotextiles on the drainage efficiency, salt discharge effects of subsurface drainage pipes, and the effect of superimposed geotextiles on the salt drainage efficiency as well as the anti-clogging effect of subsurface drainage pipes. The results are as follows: (1) The geotextile and filter material wrapped around the subsurface pipe facilitated the movement of water towards the subsurface pipe, which could promote the salt discharge of the subsurface pipe. However, in the single leaching experiment, the reduction in soil pH was not significant for different scenarios. (2) The salt removal rate of the geotextile-wrapped subsurface pipes was more than 95%. The salt removal rate of the double-layer geotextile scenario was the highest (96.7%), and the total salt content of soil profiles was 8.3% and 31.3% lower than those of the single-layer and triple-layer geotextile scenarios, respectively. The drainage efficiency of the double-layer geotextile scenario was the highest, and the salt distribution in the 0–60 cm profile was relatively uniform, ranging from 2.3 to 3.0 g∙kg−1. (3) The clogging in the triple-layer geotextile scenario was caused by the geotextile, i.e., a dense filter cake layer formed on the surface of the geotextile. The clogging in the single-layer and double-layer geotextile scenarios was the clogging of the geotextile itself, i.e., soil particles retained in the fiber structure of geotextiles. (4) In the case of the single-layer and double-layer geotextile scenarios, the soil particles failed to completely clog the selected geotextiles, and there were still a large number of pores retained. The double-layer geotextiles integrate filtration, clogging prevention, and drainage promotion to provide the best salt drainage with the subsurface pipe. This study reveals the influence of the filter on soil water salt and salt discharge and provides a theoretical explanation and technical justification for the application of the subsurface pipes salt discharge technology in saline soil ameliorate.
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6

Lassabatère, L., T. Winiarski, and R. Galvez-Cloutier. "Can geotextiles modify the transfer of heavy metals transported by stormwater in infiltration basins?" Water Science and Technology 51, no. 2 (January 1, 2005): 29–36. http://dx.doi.org/10.2166/wst.2005.0029.

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Geotextiles are fibrous materials increasingly employed for the design of infiltration basins. However, their influence on the transfer of contaminants carried by stormwater has not been fully investigated. This study, based on column leaching experiments, aims at showing the effect of geotextiles on the transfer of three heavy metals (Zn, Pb and Cd) in a reactive soil (simulating an infiltration basin at laboratory scale). This effect depends on several factors, such as type of geotextile, hydric conditions (geotextile water content), hydraulic conditions (flow-rates) and the number of geotextiles installed. In all cases, geotextiles influence heavy metal retention by modifying flow and thus regulating contact between these metals and the reactive soil.
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7

Eigenbrod, K. D., J. P. Burak, and J. G. Locker. "Differential shear movements at soil-geotextile interfaces." Canadian Geotechnical Journal 27, no. 4 (August 1, 1990): 520–26. http://dx.doi.org/10.1139/t90-066.

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The shear deformation behaviour along soil–geotextile interfaces has been investigated and is compared with that of the respective soils. Six soils (two sands, two clays, and two peats) in combination with eight different geotextiles (woven and nonwoven) were tested at various conditions in direct shear. It was found that the stiffnesses during shearing for the sand-geotextile interfaces were less than those for the actual sand, by a factor that was largely independent of the normal stress level. The same behaviour was found for the clays and for one of the peats in contact with non-woven geotextiles. For woven geotextile interfaces in contact with the clays and the peats, the load deformation behaviour was generally stiffer than for the actual soils. Key words: geotextiles, differential shear, soil–geotextile interfaces, load transfer during shear.
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8

Du, Chunxue, Chao Xu, Yang Yang, and Jiangfeng Wang. "Filtration Performance of Nonwoven Geotextile Filtering Fine-Grained Soil under Normal Compressive Stresses." Applied Sciences 12, no. 24 (December 9, 2022): 12638. http://dx.doi.org/10.3390/app122412638.

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To avoid serious clogging and loss of drainage capacity, which puts the underground structure at risk of anti-floating failure, the buried drainage filter must be equipped with a nonwoven geotextile layer. In this scenario, nonwoven geotextiles are subjected to normal compressive stress, which can cause changes in geotextile porosity and structure, affecting the filtration behavior of the geotextile filter. In this paper, in order to evaluate the filtration compatibility of the soil–geotextile system, gradient ratio (GR) tests were performed under a hydraulic gradient of 1.0 using a specially designed gradient ratio filtration device capable of applying normal stress. In total four nonwoven geotextiles and two types of soil were used. The results of the gradient ratio filtration tests were discussed in terms of GR values, the permeability of the soil–geotextile system, and the amount of fines retained in geotextiles. It was shown that under a larger normal compressive stress, the GR value would also increase, while the permeability coefficient of the soil–geotextile system decreased. The filtration responses to various soil–geotextile combinations differed under normal compressive stress. A thick nonwoven geotextile with a small filtration opening size exhibited poor filtration performance while benefiting soil retention. Fines retention was influenced by geotextile thickness, soil type, and normal compressive stress magnitude. In addition, for nonwoven geotextiles filter fine-grained soil under normal compressive stress, the test results indicated that anticlogging design criteria should be improved.
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Hsing, Wen Hao, Ching Wen Lou, Ching Wen Lin, Jin Mao Chen, and Jia Horng Lin. "Effects of the Content of High Strength Polyethylene Terephthalate Fiber and Kevlar Fiber on Properties of Geotextiles." Applied Mechanics and Materials 365-366 (August 2013): 1082–85. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.1082.

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Geotextiles have been commonly used globally, making the control of material selection to influence geotextiles properties an important research topic. This study aims to explore the effects of the ratio of high-strength polyethylene terephthalate (HPET) fiber to Kevlar fiber on hybrid geotextiles. At the first stage, HPET and polyethylene terephthalate (PET) fiber are combined to make HPET/PET hybrid geotextile and then tested for porosity and water permeability, determining the optimum HPET/PET ratio. At the second stage, with a content of 60 % PET fibers, HPET fibers and Kevlar fibers are mixed with various ratios to form Kevlar/HPET/PET hybrid geotextiles. The experimental results show that with an increase in the content of HPET fibers, the porosity and water permeability of the Kevlar/HPET/PET hybrid geotextile decrease.
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U.S. Sarma. "Enhancement of Properties of Coir Geotextiles by Natural Rubber Latex Coating." CORD 27, no. 1 (April 1, 2011): 8. http://dx.doi.org/10.37833/cord.v27i1.119.

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Coir geotextiles find application in revegetation of slopes by stabilizing the soil through erosion control. It has been found that the longevity of coir geotextiles although highest among all the natural fibres, it is required to last for at least 5 years so as to sustain the vegetation on the slopes for a long term solution. Normally it is found that coir geotextiles lose their 50% strength in 6 months in contact with soil, therefore it is required to strengthen the coir geotextiles. This work involves the coating of coir geotextiles with natural rubber latex which could enhance the longevity of coir geotextiles in various civil/bio engineering applications. The rubber latex coated coir geotextiles which are eco-friendly have superior mechanical properties and better durability compared to the conventional uncoated coir geotextiles. This paper reports the coating of coir geotextile using natural rubber latex and a comparative study of the physical and mechanical properties of the treated and untreated coir geotextiles.
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Dissertations / Theses on the topic "Geotextiles"

1

El-Jack, Abdelmoneim M. A. "Structure-property relation of nonwoven geotextiles." Thesis, University of Leeds, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414539.

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Andrejack, Theresa Louise Wartman Joseph. "A multi-axial tension test for geotextiles /." Philadelphia, Pa. : Drexel University, 2010. http://hdl.handle.net/1860/3212.

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Karademir, Tanay. "Elevated temperature effects on interface shear behavior." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42764.

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Environmental conditions such as temperature inevitably impact the long term performance, strength and deformation characteristics of most materials in infrastructure applications. The mechanical and durability properties of geosynthetic materials are strongly temperature dependent. The interfaces between geotextiles and geomembranes as well as between granular materials such as sands and geomembranes in landfill applications are subject to temperature changes due to seasonal temperature variations as well as exothermic reactions occurring in the waste body. This can be a critical factor governing the stability of modern waste containment lining systems. Historically, most laboratory geosynthetic interface testing has been performed at room temperature. Information today is emerging that shows how temperatures in the liner systems of landfills can be much higher. An extensive research study was undertaken in an effort to investigate temperature effects on interface shear behavior between (a) NPNW polypropylene geotextiles and both smooth PVC as well as smooth and textured HDPE geomembranes and (b) sands of different angularity and smooth PVC and HDPE geomembranes. A temperature controlled chamber was designed and developed to simulate elevated temperature field conditions and shear displacement-failure mechanisms at these higher temperatures. The physical laboratory testing program consisted of multiple series of interface shear tests between material combinations found in landfill applications under a range of normal stress levels from 10 to 400 kPa and at a range of test temperatures from 20 to 50 °C. Complementary geotextile single filament tensile tests were performed at different temperatures using a dynamic thermo-mechanical analyzer (DMA) to evaluate tensile strength properties of geotextile single filaments at elevated temperatures. The single filament studies are important since the interface strength between geotextiles and geomembranes is controlled by the fabric global matrix properties as well as the micro-scale characteristics of the geotextile and how it interacts with the geomembrane macro-topography. The peak interface strength for sand-geomembrane as well as geotextile-geomembrane interfaces depends on the geomembrane properties such as hardness and micro texture. To this end, the surface hardness of smooth HDPE and PVC geomembrane samples was measured at different temperatures in the temperature controlled chamber to evaluate how temperature changes affect the interface shear behavior and strength of geomembranes in combination with granular materials and/or geotextiles. The focus of this portion of the experimental work was to examine: i) the change in geomembrane hardness with temperature; ii) develop empirical relationships to predict shear strength properties of sand - geomembrane interfaces as a function of temperature; and iii) compare the results of empirically predicted frictional shear strength properties with the results of direct measurements from the interface shear tests performed at different elevated temperatures.
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4

Clapp, Joshua David. "Analysis of Rutting Development in Flexible Pavements with Geogrid-reinforced Base Layers Using 3D Finite Element Analysis." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/ClappJD2007.pdf.

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Rickson, Richmal Jane. "The use of geotextiles for soil erosion control." Thesis, Cranfield University, 2000. http://dspace.lib.cranfield.ac.uk/handle/1826/11325.

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Geotextiles are used by engineers for a variety of applications, such as filtration, separation, slope stabilisation, drainage and soil erosion control. At present, there is little research on geotextiles for erosion control, despite the increase in their use in the field. There are no guidelines for soil conservationists or field/civil engineers to indicate which product will be most effective for any given site. Studies that do exist tend to be qualitative and descriptive, rather than quantitative and scientific. There is also very limited identification and understanding of the salient physical properties of erosion control geotextiles. The present laboratory experiments aim to contribute objective, scientific data. These experiments evaluate the performance of seven different erosion control geotextiles. The products are selected to be representative of the types of erosion control geotextile currently on the market. The products tested are four natural fibred products, including three woven bionets and one biomat. Three synthetic geomats are also tested: two are buried and one is installed on the soil surface. A bare soil plot is used as the control in all the tests. The experiments are designed to simulate erosion processes at the sub-process level. This is achieved by simulating rainsplash and overland flow, both separately, and in combination. Experimental variables used include rainfall intensity (35 mm/hr, 95 mm/hr and 115 mm/hr), overland flow rate (40 ml/sec) and soil type (sandy loam and clay loam). Runoff volume, infiltration volume and soil loss are collected for each experimental run. From the results of these tests, it is possible to indicate how geotextiles modify incoming rainfall and surface hydrology, and therefore affect rates of soil detachment and transport. The results show that erosion control effectiveness is influenced by the physical characteristics of the geotextiles tested, soil type and rainfall intensity. The products tested have insignificant effect on runoff volumes generated, but soil loss varies considerably for the different treatments. Overall, the natural, woven products Rickson, R.J. 2000 Cranfield UNIVERSITY perform most effectively, reducing soil loss significantly when compared with the bare soil control, for all experimental conditions tested. The buried, synthetic products were not as efficient at controlling soil loss: under some experimental conditions soil loss from these treatments was even greater than that observed for the bare soil control. The results are analysed in terms of the salient properties of the geotextiles, which explain their performance. The salient properties identified were: percentage ground cover provided by the geotextile, water holding capacity, Geotextile Induced Roughness, wet weight of geotextile and ability to increase overland flow depth. The limitations of the laboratory-based research are indicated, such as the problems of extrapolation from small test plots up to field scale applications, and the difficulties of controlling the interactions between the geotextiles and the experimental variables. Implications of the research to the erosion control industry are made. For existing and potential end-users of erosion control geotextiles, the decision to specify these products is not only related to technical performance (as quantified in the laboratory studies), but also to the assessment of erosion risk, costs and compliance criteria. For manufacturers, identification of the salient properties of effective erosion control geotextiles helps in the development and design of improved products. Recommendations for future research include study of the variability in geotextile performance as related to external factors such as soil type, rainfall intensity, slope steepness and slope length. Incorporating the effect of erosion control geotextiles into physically based erosion prediction models such as EUROSEM and WEPP has great potential. Identification and quantification of critical values of the salient properties of erosion control geotextiles has considerable scope. The performance of geotextiles at controlling erosion over longer time periods (greater than one storm event) requires further investigation. Finally, research into the synergistic relationships between geotextiles and vegetation also warrants further research.
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Rickson, R. J. "The use of geotextiles for soil erosion control." Thesis, Cranfield University, 2000. http://dspace.lib.cranfield.ac.uk/handle/1826/11325.

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Geotextiles are used by engineers for a variety of applications, such as filtration, separation, slope stabilisation, drainage and soil erosion control. At present, there is little research on geotextiles for erosion control, despite the increase in their use in the field. There are no guidelines for soil conservationists or field/civil engineers to indicate which product will be most effective for any given site. Studies that do exist tend to be qualitative and descriptive, rather than quantitative and scientific. There is also very limited identification and understanding of the salient physical properties of erosion control geotextiles. The present laboratory experiments aim to contribute objective, scientific data. These experiments evaluate the performance of seven different erosion control geotextiles. The products are selected to be representative of the types of erosion control geotextile currently on the market. The products tested are four natural fibred products, including three woven bionets and one biomat. Three synthetic geomats are also tested: two are buried and one is installed on the soil surface. A bare soil plot is used as the control in all the tests. The experiments are designed to simulate erosion processes at the sub-process level. This is achieved by simulating rainsplash and overland flow, both separately, and in combination. Experimental variables used include rainfall intensity (35 mm/hr, 95 mm/hr and 115 mm/hr), overland flow rate (40 ml/sec) and soil type (sandy loam and clay loam). Runoff volume, infiltration volume and soil loss are collected for each experimental run. From the results of these tests, it is possible to indicate how geotextiles modify incoming rainfall and surface hydrology, and therefore affect rates of soil detachment and transport. The results show that erosion control effectiveness is influenced by the physical characteristics of the geotextiles tested, soil type and rainfall intensity. The products tested have insignificant effect on runoff volumes generated, but soil loss varies considerably for the different treatments. Overall, the natural, woven products Rickson, R.J. 2000 Cranfield UNIVERSITY perform most effectively, reducing soil loss significantly when compared with the bare soil control, for all experimental conditions tested. The buried, synthetic products were not as efficient at controlling soil loss: under some experimental conditions soil loss from these treatments was even greater than that observed for the bare soil control. The results are analysed in terms of the salient properties of the geotextiles, which explain their performance. The salient properties identified were: percentage ground cover provided by the geotextile, water holding capacity, Geotextile Induced Roughness, wet weight of geotextile and ability to increase overland flow depth. The limitations of the laboratory-based research are indicated, such as the problems of extrapolation from small test plots up to field scale applications, and the difficulties of controlling the interactions between the geotextiles and the experimental variables. Implications of the research to the erosion control industry are made. For existing and potential end-users of erosion control geotextiles, the decision to specify these products is not only related to technical performance (as quantified in the laboratory studies), but also to the assessment of erosion risk, costs and compliance criteria. For manufacturers, identification of the salient properties of effective erosion control geotextiles helps in the development and design of improved products. Recommendations for future research include study of the variability in geotextile performance as related to external factors such as soil type, rainfall intensity, slope steepness and slope length. Incorporating the effect of erosion control geotextiles into physically based erosion prediction models such as EUROSEM and WEPP has great potential. Identification and quantification of critical values of the salient properties of erosion control geotextiles has considerable scope. The performance of geotextiles at controlling erosion over longer time periods (greater than one storm event) requires further investigation. Finally, research into the synergistic relationships between geotextiles and vegetation also warrants further research.
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Saab, Lahouaria Maria. "Experimental and numerical investigations of soil reinforced with DSF fabrics." Thesis, University of Manchester, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261965.

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Jazestani, Jamshid. "The sealing of non-woven geotextiles with cattle slurries." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0004/MQ44190.pdf.

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D'Souza, Jennifer Anne. "The durability of polypropylene tapes for use in geotextiles." Thesis, Open University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236215.

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Tshifularo, Cyrus Alushavhiwi. "Comparative performance of natural and synthetic fibre nonwoven geotextiles." Thesis, Nelson Mandela Metropolitan University, 2017. http://hdl.handle.net/10948/21362.

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The aim of this work was to establish a range of suitable process parameters which can be utilized to produce needlepunched nonwoven fabrics for geotextile applications. Nonwoven fabrics were produced from 100% PP, a blend of 50/50% PP/kenaf and 100% kenaf fibres. The depths of needle penetration of 4, 7 and 10 mm, stroke frequencies of 250, 350 and 450 strokes/min and mass per unit area of 300, 600 and 900 g/m2 were utilized for producing the fabrics, on a Dilo loom. The effect of depth of needle penetration, stroke frequency and mass per unit area on the fabric properties, namely, tensile strength, puncture resistance, pore size, water permeability and transmissivity were analysed. In addition, the effect of chemicals, namely, 10% ammonium hydroxide (NH4OH), 10% sodium chloride (NaCl) and 3% sulphuric acid (H2SO4) solutions on degradation of the fabric was also studied. The results have shown that density, thickness and nominal weight of the needlepunched nonwoven fabrics were related to each other and they were influenced by stroke frequency, depth of needle penetration and feed rate of the needlepunching process. The increase in nominal weight of the fabrics also increases thickness and density of the fabrics. The tensile strength and puncture resistance of the fabrics increased with the increases in stroke frequency, depth of needle penetration and fabric mass per unit area. However, lower tensile strength and puncture resistance were achieved in the fabrics produced at lower stroke frequency, lower depth of needle penetration and lower mass per unit area. Bigger pores were resulted in the fabrics produced at lower stroke frequency, lower depth of needle penetration and lower mass per unit area, however, pore size decreased with increases in stroke frequency, depth of needle penetration and mass per unit area. Water permeability depends on the pore size, properties of the fibres, stroke frequency, depth of needle penetration and mass per unit area. Higher tensile strength and higher puncture resistance were achieved in the needlepunched nonwoven fabrics produced from 100% PP fibres, therefore, they are suitable for some load-bearing geotextile applications, such as reinforcement and separation. However, higher water permeability was achieved in the fabrics produced from 100% kenaf fibres, therefore, they are ideal for geotextile applications where good water permeability is required. Higher values for transmissivity were obtained in the fabrics produced from a blend of 50/50% PP/kenaf fibres, therefore they are suitable for drainage applications. The fabrics produced from a blend of 50/50% PP/kenaf fibres achieved better values of tensile strength, puncture resistance, pore size and water permeability in comparison to that produced from 100% PP and 100% kenaf fibres. However, better tensile strength and puncture resistance were achieved in the fabrics produced from 100% PP fibres and bigger pore size and higher water permeability were achieved in the fabrics produced from 100% kenaf fibres. Therefore, it can be suggested that the nonwoven fabrics produced from a blend of 50/50% PP/kenaf fibres can fulfil almost all requirements of geotextile applications, such as, filtration, separation, reinforcement and drainage. The fabrics produced from 100% PP fibres were not damaged or deteriorated when treated with all the three chemicals due to chemical inertness of polypropylene. However, the fabrics produced from a blend of 50/50% PP/kenaf and 100% kenaf fibres were damaged and deteriorated when treated with H2SO4.
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Books on the topic "Geotextiles"

1

Geotextiles. Glasgow: Blackie, 1987.

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Richard, François. Geotextiles = géotextiles. [Ottawa]: Dept. of the Secretary of State of Canada, 1992.

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S, Miller K., ed. Geotextiles handbook. London: T. Telford, 1988.

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International Union of Testing and Research Laboratories for Materials and Structures., ed. Durability of geotextiles. London: Chapman and Hall, 1988.

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United States. Bureau of Reclamation. Assistant Commissioner--Engineering and Research, ed. Embankment dams: Geotextiles. Denver, Colo: U.S. Department of the Interior, Bureau of Reclamation, Assistant Commissioner, Engineering and Research, 1992.

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6

Horrocks, A. Richard. The durability of geotextiles. Guimaraes: EUROTEX, 1992.

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7

American Society for Testing and Materials. ASTM standards on geotextiles. Philadelphia, PA: ASTM, 1988.

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Jewell, R. A. Soil reinforcement with geotextiles. London: CIRIA and Thomas Telford, 1996.

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Jewell, R. A. Soil reinforcement with geotextiles. London: Construction Industry Research and Information Association, 1996.

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Geopolymers, Exxon Chemical, ed. Geotextiles: Designing for soil reinforcement. Pontypool, Gwent: Exxon Chemical Geopolymers, 1989.

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Book chapters on the topic "Geotextiles"

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Eslamian, Saeid, Majedeh Sayahi, Kaveh Ostad-Ali-Askari, Sayedeh Zahra Hosseini-Teshnizi, Sayed Alireza Zareei, and Niloofar Salemi. "Geotextiles." In Encyclopedia of Earth Sciences Series, 1–3. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-12127-7_140-1.

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Gooch, Jan W. "Geotextiles." In Encyclopedic Dictionary of Polymers, 339. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_5484.

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Eslamian, Saeid, Majedeh Sayahi, Kaveh Ostad-Ali-Askari, Sayedeh Zahra Hosseini-Teshnizi, Sayed Alireza Zareei, and Niloofar Salemi. "Geotextiles." In Encyclopedia of Earth Sciences Series, 409–11. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73568-9_140.

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Vernon, Siobhan, Susan Irwine, Joanna Patton, and Neil Chapman. "Geotextiles." In Landscape Architect's Pocket Book, 192–93. 3rd ed. London: Routledge, 2021. http://dx.doi.org/10.4324/9781003119500-38.

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Sanyal, Tapobrata. "Introducing Geotextiles." In Developments in Geotechnical Engineering, 1–6. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1932-6_1.

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Sprague, C. J., and G. W. Davis. "Polyester Geotextiles." In ACS Symposium Series, 304–19. Washington, DC: American Chemical Society, 1991. http://dx.doi.org/10.1021/bk-1991-0457.ch020.

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Ramzan, Muhammad Babar, Muhammad Salman Naeem, Ateeq ur Rehman, and Ali Raza. "Fibers for Geotextiles." In Fibers for Technical Textiles, 129–49. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49224-3_7.

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Chan, Kwong. "Geotextiles and geomembranes." In Polymer Science and Technology Series, 277–83. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4421-6_39.

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Jeon, Han-Yong. "Polymer Composites as Geotextiles." In Polymer Composites, 435–68. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2012. http://dx.doi.org/10.1002/9783527645213.ch14.

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Sanyal, Tapobrata. "Potentially Important Jute Geotextiles." In Developments in Geotechnical Engineering, 149–61. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1932-6_13.

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Conference papers on the topic "Geotextiles"

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Dengler, Simon Andreas, Michael Luber, Léon Neff, Hartmut Hangen, Bernhard Schmauss, Olaf Ziemann, and Rainer Engelbrecht. "OTDR Strain and Force Sensing by POF on Geotextiles in a Geotechnical Application Test." In Optical Fiber Sensors. Washington, D.C.: Optica Publishing Group, 2023. http://dx.doi.org/10.1364/ofs.2023.w4.91.

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With polymer optical fibers (POF) attached to geotextiles, optical time domain reflectometry (OTDR) can be used to measure strain of the geotextile spatially resolved in soil. We test the technique in a geotechnical application test and thus demonstrate the functionality of the sensor for field use.
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Lin, Chuang, and Xiong Zhang. "Comparisons of Geotextile-Water Characteristic Curves for Wicking and Non-Wicking Geotextiles." In Geo-Congress 2020. Reston, VA: American Society of Civil Engineers, 2020. http://dx.doi.org/10.1061/9780784482797.061.

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Stormont, John C., and Carl E. Morris. "Characterization of Unsaturated Nonwoven Geotextiles." In Geo-Denver 2000. Reston, VA: American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40510(287)10.

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Heibaum, M. "Surface erosion countermeasures incorporating geotextiles." In The 8th International Conference on Scour and Erosion. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315375045-77.

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Liao, K., and S. K. Bhatia. "Dewatering of Natural Sediments Using Geotextile Tubes: Comparative Behaviors of Woven and Non-Woven Geotextiles." In GeoShanghai International Conference 2006. Reston, VA: American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40864(196)34.

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Punukollu, Dhatri, and Jayasree. "Subgrade reinforcementof flexible pavement using geotextiles." In ADVANCES IN SUSTAINABLE CONSTRUCTION MATERIALS. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0144637.

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Bashkova, Galina. "INFORMATION TECHNOLOGIES IN DESIGN OF THE GEOTEXTILES BY FINITE ELEMENT ANALYSIS." In eLSE 2014. Editura Universitatii Nationale de Aparare "Carol I", 2014. http://dx.doi.org/10.12753/2066-026x-14-272.

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The motto of the conference "Let's build the future through learning innovation" is the best way to formulate the proper development strategy for higher education. First of all this motto is valid for engineering higher education. When training specialists, particularly in the period of economic distress, it is necessary to focus on the most promising the so-called "critical technologies" considering technological, economic and environmental components in the aggregate.Production and application of technical textiles and fibre-reinforced composites have a high importance for technological breakthroughs in many industries. In this direction the study was carried out. A technical textile as the most dynamically developing innovative textiles requires new approaches in the designing. Geotextiles as a significant part of technical textiles are different depending on application, soil composition, raw materials used the structure and usage conditions. Developed a theoretical description of the interaction of geotextiles with the soil, the method of its calculation by numerical methods which allows to predict (simulate) the permeability properties with IT. This approach in the design of newly materials will be useful for students and researchers from theoretical, methodological and instrumental perspectives. The research substantiates the use of warp-knitted mesh structures geotextiles from the flax yarn for prevention of surface soil erosion complex relief and slope. The analytical analysis of fluid filtration across textile geomaterial multilayer structure which is laid inside a soil under overlay load is done. The technique has based on finite element method (FEM) makes it possible to forecast of geotextiles permeability properties which are necessary for granulated solids reinforcement. The theoretical analysis of the transport properties of porous structures depending on the degree of contraction by external loads using finite elements method was done. Methods for calculating in MatLab the moisture permeability of multilayer porous materials depending on the contraction degree in relation to geotextiles were developed.
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Bashir, Asad, Abigail R. Clarke-Sather, Tyler M. Poggogiale, and Christopher L. Meehan. "Material Properties of Discarded Textiles for Manufacturing Feedstocks." In ASME 2021 16th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/msec2021-63645.

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Abstract Presently, many textiles are discarded, in a condition that would allow a significant percentage of them to be able to be completely reused or recycled. Recent consumption practices embodied by “fast fashion”, fast purchasing, and fast disposal of out of style clothing has increased the volume of discarded clothing, as the repurposing and/or recycling of discarded textile materials has not increased at a proportional rate. Consequently, discarded clothing may have nearly no wear and tear or extensive use before consumers choose to dispose of these textiles. Increasing the recovery of textiles from municipal solid waste streams involves understanding the material properties that discarded textiles possess. Measuring the material properties available from discarded textiles will allow for understanding whether these textiles can be reused. At the same time as disposal of textiles has increased, geotextile purchase and use has been increasing rapidly. In the current study, tensile strength (break force) and permittivity of discarded clothing samples made of cotton, polyester, and cotton-polyester blends were measured and compared with material properties that are commonly specified for geotextile applications. Average break force values measured for discarded cotton and polyester and average permittivity values measured for 50%/50% cotton-polyester blends and polyester are higher than what is commonly recommended for common geotextile applications. Polyester materials showed promise for drainage and erosion control applications that would be commonly serviced by geotextiles, as polyester samples yielded average break force and permittivity values are above typically recommended geotextile minimum values for these applications.
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Miszkowska, Anna. "FILTRATION AND CLOGGING BEHAVIOUR OF NONWOVEN GEOTEXTILES." In 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/1.2/s02.034.

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Holtz, R. D. "Laboratory and Field Investigations of Separation Geotextiles." In Geo-Chicago 2016. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784480182.007.

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Reports on the topic "Geotextiles"

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Qamhia, Issam, and Erol Tutumluer. Evaluation of Geosynthetics Use in Pavement Foundation Layers and Their Effects on Design Methods. Illinois Center for Transportation, August 2021. http://dx.doi.org/10.36501/0197-9191/21-025.

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This report presents findings of a research effort aimed at reviewing and updating existing Illinois Department of Transportation (IDOT) specifications and manuals regarding the use of geosynthetic materials in pavements. The project consisted of three tasks: evaluate current IDOT practice related to the use of geosynthetics; review research and state of the practice on geosynthetics applications, available products, design methods, and specifications; and propose recommendations for geosynthetic solutions in pavements to modernize IDOT’s practices and manuals. The review of IDOT specifications revealed that geotextiles are the most used geosynthetic product in Illinois, followed by geogrids. Several of IDOT’s manuals have comprehensive guidelines to properly design and construct pavements with geosynthetics, but several knowledge gaps and potential areas for modernization and adoption of new specifications still exist. Based on the review of the available design methods and the most relevant geosynthetic properties and characterization methods linked to field performance, several updates to IDOT’s practice were proposed. Areas of improvement are listed as follows. First, establish proper mechanisms for using geogrids, geocells, and geotextiles in subgrade restraint and base stabilization applications. This includes using shear wave transducers, i.e., bender elements, to quantify local stiffness enhancements and adopting the Giroud and Han design method for subgrade restraint applications. Second, update IDOT’s Subgrade Stability Manual to include property requirements for geogrids, geotextiles, and geocells suitable for subgrade restraint applications. Third, establish proper standards on stabilization, separation, and pumping resistance for geotextiles by incorporating recent research findings on geotextile clogging and permeability criteria. Fourth, promote the use of modern geosynthetic products, such as geotextiles with enhanced lateral drainage, and fifth, elaborate on proper methods for construction/quality control measures for pavements with geosynthetics.
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Karcz, Dean, and R. Holtz. Development of an IDOH Classification System for Geotextiles. West Lafayette, IN: Purdue University, 1988. http://dx.doi.org/10.5703/1288284314153.

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Shoenberger, James E. User's Guide: Geotextiles as Separation Layers in Pavement Structures. Fort Belvoir, VA: Defense Technical Information Center, June 1992. http://dx.doi.org/10.21236/ada264650.

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Christoforidou, Eirini, Antonio Bobet, Tommy Nantung, and Philippe L. Bourdeau. Use of Geosynthetics on Subgrade and on Low and Variable Fill Foundations. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317437.

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There are significant problems during construction to establish an adequate foundation for fills and/or subgrade for pavements when the natural ground has low-bearing soils. Geosynthetics such as geogrids, geotextiles, and/or geocells could provide a less time-consuming, costly alternative for establishing an adequate foundation for the fill and/or subgrade. There is extensive evidence in the literature and on DOTs practices about the suitability of using geotextiles in pavements as separators. Previous studies have also shown that the use of geogrids in flexible pavements as a reinforcing mechanism could decrease the thickness of the base layer and/or increase the life of the pavement. In this study, analyses of selected pavement designs using Pavement ME—while considering geogrid-enhanced base or subgrade resilient modulus values—showed that geogrid-reinforcement, when placed at the interface between subgrade and base, did not produce significant benefits and only a modest increase in pavement life was predicted. In addition, parametric finite element analyses were carried out to investigate the potential benefits of placing a geogrid at the base of a fill over a localized weak foundation zone. The analyses showed that the use of geogrids is beneficial only when: (a) the stiffness of the weak foundation soil is about an order of magnitude smaller than the rest of the foundation soil; and (b) the horizontal extent of the weak foundation soil is at least 30% of the base of the embankment foundation. The largest decrease in differential settlements at the surface of the fill, resulting from geogrid-reinforcement, was less than 20% and, therefore, it is unlikely that the sole use of geogrids would be sufficient to mitigate differential settlements. Based on previous studies, a geocell mattress, which is a three-dimensional geosynthetic filled with different types of materials, could act as a stiff platform at the base of an embankment and bridge over weak zones in the foundation. However, given the limited experience in Indiana on the use of geocells, further research is required to demonstrate that geocells can be effectively used in place of other reinforcement methods.
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Hastings, Rachel, Meghan Quinn, Andrew Bernier, and Craig Rutland. A review of airfield pavement drainage guidance. Engineer Research and Development Center (U.S.), October 2022. http://dx.doi.org/10.21079/11681/45720.

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Inadequate drainage conditions may lead to airfield pavement deterioration. A thorough review of existing pavement drainage guidance and literature was necessary to identify key drainage considerations such as surface drainage infrastructure, pavement drainage layer thickness, use of geotextiles, and performance in freeze–thaw climates. Existing airport drainage guidance is provided by the Unified Facilities Criteria (UFC), the Federal Aviation Administration (FAA), and the Tri-Service Pavements Working Group (TSPWG). Pavement drainage guidance is buried within regulations for pavement de-sign and can, at times, be split awkwardly to accommodate pavement guidance that is split between rigid and flexible designs. Most airfield pavement guidance has been adapted from guidance for highway design. Most guidance is also strength based, with little to no attention paid to material erodibility (a potential cause of pavement deterioration). This review also found very little reference to repairing, rather than completely replacing, damaged subsurface drainage layers. Further research is needed to assess the use of geofabrics and moisture in freeze–thaw conditions on drainage layers and surface structures. With further research, the retrofit and repair of existing subpavement systems might become a more economical solution to drainage-caused pavement deterioration issues than complete reconstruction.
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Thembeka Ncube, Ayanda, and Antonio Bobet. Use of Recycled Asphalt. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317316.

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The term Reclaimed Asphalt Pavement (RAP) is used to designate a material obtained from the removal of pavement materials. RAP is used across the US in multiple applications, largely on asphalt pavement layers. RAP can be described as a uniform granular non-plastic material, with a very low percentage of fines. It is formed by aggregate coated with a thin layer of asphalt. It is often used mixed with other granular materials. The addition of RAP to aggregates decreases the maximum dry unit weight of the mixture and decreases the optimum water content. It also increases the Resilient Modulus of the blend but decreases permeability. RAP can be used safely, as it does not pose any environmental concerns. The most important disadvantage of RAP is that it displays significant creep. It seems that this is caused by the presence of the asphaltic layer coating the aggregate. Creep increases with pressure and with temperature and decreases with the degree of compaction. Creep can be mitigated by either blending RAP with aggregate or by stabilization with chemical compounds. Fly ash and cement have shown to decrease, albeit not eliminate, the amount of creep. Mechanical stabilizing agents such as geotextiles may also be used.
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Ahlrich, Randy C. User's Guide: Asphalt Rubber and Geotextile Interlayers. Fort Belvoir, VA: Defense Technical Information Center, August 1992. http://dx.doi.org/10.21236/ada264781.

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Kane, William, J. L. Klosky, Joram Shenhar, Will Shulman, and Stephen Solga. Feasibility Study of the Geotextile Waste Filtration Unit. Fort Belvoir, VA: Defense Technical Information Center, February 2000. http://dx.doi.org/10.21236/ada373530.

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Honegger, Wijewickreme, and Monroy. L52325 Assessment of Geosynthetic Fabrics to Reduce Soil Loads on Buried Pipelines - Phase I and II. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), December 2011. http://dx.doi.org/10.55274/r0010398.

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High soil loads on buried pipelines can lead to unacceptably high pipeline strains developed in response to permanent ground displacement. Common causes of permanent ground displacement are related to slope instability as a result of heavy precipitation or ground subsidence. In addition, several permanent ground displacement hazards are related to earthquakes including surface fault displacement, triggered landslide movement, surface ground settlement related to liquefaction, and lateral spread displacement. Result: Four specific areas of investigation were completed: 1.Performed baseline tests in moist sand to confirm minimal difference in horizontal soil restraint between moist and dry sand. 2.Performed tests to gauge the variation in horizontal load reduction with separation between the pipe and an inclined trench wall lined with two layers of geotextile. 3.Performed tests in compacted 19 mm (0.75 in) minus sand and crushed limestone (referred to locally in British Columbia as road mulch) to attempt to provide larger difference between horizontal forces developed with and without lining a trench wall with geotextile. 4.Performed tests to attempt to confirm oblique horizontal-axial soil restraint behavior reported in small-scale tests and centrifuge tests. Benefit: Rather than undertake further physical testing to better understand how the presence of single or dual layers of geotextile fabric changes the mechanisms by which soil restraint develops for horizontal ground displacement, future efforts should focus on numerical simulation preferably using discrete element methods. Until full-scale test data are available to confirm consistent prediction of oblique horizontal-axial soil restraint, the practice of treating horizontal and axial soil springs independently in the analysis of buried pipeline response to ground displacement, as is the current practice, should be maintained.
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Konoplyanaya, A. E., and N. A. Gruzintseva. The program for the formation of a complete plan for technological control of the production of geotextile materials. OFERNIO, March 2021. http://dx.doi.org/10.12731/ofernio.2021.24771.

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