Record Details

Evaluation of permeability characteristics of a geosynthetic-reinforced soil through laboratory tests

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Evaluation of permeability characteristics of a geosynthetic-reinforced soil through laboratory tests
 
Creator RAISINGHANI, DV
VISWANADHAM, BVS
 
Subject hydraulic behavior
geotextiles
drainage
marginal soils
reinforced soil
geosynthetics
drainage
permeameter
permeability
 
Description The objective of this paper is to examine the permeability characteristics of geosynthetic layers under confinement with soils having relatively low permeability. For this purpose, a large permeameter was custom designed and a series of permeability tests were carried-out by varying soil type and number of geosynthetic layers. Further, effect of provision of sand cushion and the thickness of sand cushion on permeability characteristics was also examined. Normal stress was increased in intervals of 50 kPa up to 200 kPa. With an increase in normal stress, a decrease in the permeability characteristics of a geosynthetic-reinforced soil was observed. The permeability characteristics were found to improve significantly with the provision of sand cushion and an increase in its thickness. Based on the definition of equivalent coefficient of permeability of stratified soils for parallel flow, an equation for estimating coefficient of permeability of soil-geosynthetic system with and without sand cushion is proposed. Considering the application of geosynthetics in reinforced slopes and walls with low-permeable backfill soils, a suitable geosynthetic with a thin layer of sand cushion is recommended. This in turn can also help in enhancing the pore-water pressure dissipation.
 
Publisher ELSEVIER SCI LTD
 
Date 2011-07-22T02:34:59Z
2011-12-26T12:52:16Z
2011-12-27T05:39:22Z
2011-07-22T02:34:59Z
2011-12-26T12:52:16Z
2011-12-27T05:39:22Z
2010
 
Type Article
 
Identifier GEOTEXTILES AND GEOMEMBRANES, 28(6), 579-588
0266-1144
http://dx.doi.org/10.1016/j.geotexmem.2010.01.001
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6078
http://hdl.handle.net/10054/6078
 
Language en