Engineering characterisation of estuarine silts

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Show simple item record Long, Michael (Michael M.) 2011-08-25T15:50:18Z 2011-08-25T15:50:18Z 2007 Geological Society of London en 2007-05
dc.identifier.citation Quarterly Journal of Engineering Geology and Hydrogeology en
dc.description.abstract Guidance is provided for geotechnical engineers designing civil engineering works in silty soils. A detailed characterisation of two estuarine silt sites in Ireland is performed and the soil properties are linked to their geological origin. It was found that these soils are susceptible to densification by conventional and high quality fixed piston tube sampling and care needs to be taken when using laboratory derived design parameters, particularly for consolidation and shear strength properties. One dimensional consolidation and creep of these silts can be modelled successfully by the well known Janbu formulation. Settlement predictions from laboratory derived parameters match reasonably with measured data but tend to underestimate primary consolidation, consistent with a sampling densification effect. Vane data should be used with caution as measured strength values may be high and it seems more reliable parameters can be derived from CPTU tests. Conventional techniques for determining soil strength from triaxial tests in silt are inappropriate due to the dilational nature of the material and more reliable and logical strength estimates can be made from a limiting strain criterion. en
dc.description.sponsorship Not applicable en
dc.format.extent 862680 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Geological Society of London en
dc.relation.requires Architecture, Landscape & Civil Engineering Research Collection en
dc.relation.requires Critical Infrastructure Group Research Collection en
dc.relation.requires Urban Institute Ireland Research Collection en
dc.subject Silt en
dc.subject Compressibility en
dc.subject Cone penetration tests en
dc.subject Embankments en
dc.subject Laboratory studies en
dc.subject.lcsh Silt--Testing en
dc.subject.lcsh Soil consolidation test en
dc.subject.lcsh Embankments en
dc.title Engineering characterisation of estuarine silts en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.internal.webversions en
dc.status Peer reviewed en
dc.identifier.volume 40 en
dc.identifier.issue 2 en
dc.identifier.startpage 147 en
dc.identifier.endpage 161 en
dc.identifier.doi 10.1144/1470-9236/05-061
dc.neeo.contributor Long|Michael (Michael M.)|aut| en

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