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Effect of randomly distributed geofibers on the piping behaviour of embankments constructed with fly ash as a fill material

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Title Effect of randomly distributed geofibers on the piping behaviour of embankments constructed with fly ash as a fill material
 
Creator DAS, A
JAYASHREE, C
VISWANADHAM, BVS
 
Subject fiber-reinforced sand
polypropylene fiber
expansive soil
clayey soil
coal ash
strength
lime
performance
fly ash
fibers
seepage
hydraulic gradient
fiber reinforcement
piping
 
Description Today, fly ash is being used as a structural fill material in highway and railway embankments, for ash pond bunds, levees, filling low-laying areas etc. Seepage induced failures in the form of piping can weaken and affect the performance of an embankment constructed with fly ash as a structural fill material. This paper presents a study to examine the effect of randomly distributed geofibers on the piping behaviour of fly ash. in this study, a number of experiments were carried out for determining the seepage velocity and piping resistance of fly ash, mixed randomly with flexible polyester fibers having various dosages and lengths. Seepage velocity of flow of water through fly ash is calculated for each case and compared with an unreinforced fly ash. It was observed that fibers reduced the seepage velocity, increased the piping resistance of fly ash and delays the attenuation of piping phenomena considerably. Finally the mechanism by which discrete and randomly distributed fibers restrain piping of fly ash is explained with the fly ash fiber interaction. (C) 2009
 
Publisher ELSEVIER SCI LTD
 
Date 2011-07-22T01:45:49Z
2011-12-26T12:52:15Z
2011-12-27T05:39:20Z
2011-07-22T01:45:49Z
2011-12-26T12:52:15Z
2011-12-27T05:39:20Z
2009
 
Type Article
 
Identifier GEOTEXTILES AND GEOMEMBRANES, 27(5), 341-349
0266-1144
http://dx.doi.org/10.1016/j.geotexmem.2009.02.004
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6065
http://hdl.handle.net/10054/6065
 
Language en