A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Geofiber Reinforced Soil Liner for Waste Containment Systems
The objective of this paper is to evaluate the suitability of fiber-reinforced soil as a liner material for waste containment systems. This paper addresses the affect of aspect ratio and dosage of fibers on flexural and permeability characteristics of soil with and without discrete and randomly distributed fibers (DRDF). In addition, in order to verify the Velcro® effect like phenomenon along the Geofiber Reinforced Soil Liner (GRSL) and Geomembrane (GM) interface, a series of modified direct shear tests were conducted. For fibers with aspect ratio up to 45 and fiber content equal to 0.5 %, the coefficient of permeability was found to be about 1 x 10–9 m/s. Beyond 0.5 %, with an increase in fiber content, a gradual increase in the permeability was observed. Analysis and interpretation of modified direct shear tests conducted on soil and geomembrane with two textures (namely, smooth and rough) indicate that interface strength increases with an increase in fiber content and aspect ratio. For fibers with l/b = 45 and fiber content equal to 0.5 %, the strain at crack initiation was observed to be 2.75 %. Contrary to this, for an un-reinforced soil beam it is only 1.54 %. With the help of this study, fiber reinforced soil can be considered as a viable alternative to enhance the soil liner characteristics of waste-containment systems.
Geofiber Reinforced Soil Liner for Waste Containment Systems
The objective of this paper is to evaluate the suitability of fiber-reinforced soil as a liner material for waste containment systems. This paper addresses the affect of aspect ratio and dosage of fibers on flexural and permeability characteristics of soil with and without discrete and randomly distributed fibers (DRDF). In addition, in order to verify the Velcro® effect like phenomenon along the Geofiber Reinforced Soil Liner (GRSL) and Geomembrane (GM) interface, a series of modified direct shear tests were conducted. For fibers with aspect ratio up to 45 and fiber content equal to 0.5 %, the coefficient of permeability was found to be about 1 x 10–9 m/s. Beyond 0.5 %, with an increase in fiber content, a gradual increase in the permeability was observed. Analysis and interpretation of modified direct shear tests conducted on soil and geomembrane with two textures (namely, smooth and rough) indicate that interface strength increases with an increase in fiber content and aspect ratio. For fibers with l/b = 45 and fiber content equal to 0.5 %, the strain at crack initiation was observed to be 2.75 %. Contrary to this, for an un-reinforced soil beam it is only 1.54 %. With the help of this study, fiber reinforced soil can be considered as a viable alternative to enhance the soil liner characteristics of waste-containment systems.
Geofiber Reinforced Soil Liner for Waste Containment Systems
Viswanadham, B. V. S. (author) / Jha, B. K. (author) / Pawar, S. (author) / Kashyap, C. (author)
GeoCongress 2008 ; 2008 ; New Orleans, Louisiana, United States
GeoCongress 2008 ; 56-63
2008-03-07
Conference paper
Electronic Resource
English
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