The prediction of equivalent granular steady state line of loose sand with fines

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dc.contributor.authorRahman, M.M.
dc.contributor.authorLo, S.R.
dc.date.accessioned2009-10-14T21:04:51Z
dc.date.available2009-10-14T21:04:51Z
dc.date.issued2008en
dc.description.abstractVoid ratio has been used as a state variable for predicting the liquefaction behaviour of soils under the Critical State, sometimes also referred to as the Steady State, framework. Recent publications show that void ratio may not be a good parameter for characterizing sand with fines because the Steady State Line (or curve) in the e-log(p') space moves downward with increase in fines content until a threshold value refers to as the threshold fines content “TFC”. Recently, an alternative state variable referred to as equivalent granular void ratio has been proposed to resolve this problem. To calculate this alternative state variable, an additional parameter “b” is needed. This parameter “b” represents the fraction of fines that actively participate in the force structure of the solid skeleton. However, predicting the “b” value is problematic. This paper examines the factors affecting the “b” value based on published work on binary packing. This leads to a simple semi-empirical equation for predicting the “b” value based on fines size and fines content. The proposed equations were evaluated with published data sets. Then, the concept of an equivalent granular steady state line is proposed. This concept was used to predict the location of SSLs for sand with different fines content from either the SSL of clean sand or the SSL of sand with a given fines content. The predictions agree well with experimental results.en
dc.identifier.citationRahman, M.M., Lo, S.R. (2008) The prediction of equivalent granular steady state line of loose sand with fines. Geomechanics and Geoengineering, 3(3), pp. 179-190.en
dc.identifier.doihttps://doi.org/10.1080/17486020802206867
dc.identifier.issn1748-6025
dc.identifier.urihttp://hdl.handle.net/10092/2974
dc.language.isoen
dc.publisherUniversity of Canterbury. Civil and Natural Resources Engineeringen
dc.rights.urihttps://hdl.handle.net/10092/17651en
dc.subjectvoid ratioen
dc.subjectstate variableen
dc.subjectsteady stateen
dc.subjectliquefactionen
dc.subject.marsdenFields of Research::300000 Agricultural, Veterinary and Environmental Sciences::300100 Soil and Water Sciences::300101 Soil physicsen
dc.subject.marsdenFields of Research::290000 Engineering and Technology::290800 Civil Engineering::290805 Geotechnical engineeringen
dc.titleThe prediction of equivalent granular steady state line of loose sand with finesen
dc.typeJournal Article
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