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dc.contributor.author Long, Michael (Michael M.)
dc.date.accessioned 2011-08-25T15:58:14Z
dc.date.available 2011-08-25T15:58:14Z
dc.date.copyright 2003 Thomas Telford Publishing Ltd. en
dc.date.issued 2003-10
dc.identifier.citation Proceedings of the ICE - Geotechnical Engineering en
dc.identifier.issn 1353-2618
dc.identifier.uri http://hdl.handle.net/10197/3095
dc.description.abstract Sample disturbance effects in the laminated facies at the Bothkennar soft clay research site are examined by comparing the results of laboratory tests on specimens obtained from three fixed piston tube samplers. A significant feature of the results is that the sampling process associated with the conventional piston tube used in the UK and Ireland appears to increase the post yield stiffness and the CAUC triaxial undrained strength, reduce the preconsolidation stress, the pore pressure coefficient at failure and induce a strong tendency for dilatant behaviour post peak when compared to tests on specimens from a sampler with a modified (sharper) cutting edge angle. It is reasoned that these findings are caused by material destructuration during the sampling process with the conventional tubes. Increased densification of these specimens caused both by sampling and during anisotropic consolidation may also contribute to these effects. The results are supported by reference to recent analytical work and data for three other soils. It is recommended that the use of these conventional thin walled tubes with a crude cutting edge is abandoned and that some with improved cutting edge geometry replaces them. en
dc.description.sponsorship Other funder en
dc.format.extent 160237 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Institution of Civil Engineers 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.rights This is an electronic version of an article published in Proceedings of the ICE - Geotechnical Engineering, 156 (4): 213-224, available online at: http://dx.doi.org/10.1680/geng.2003.156.4.213. en
dc.subject Soft clays en
dc.subject Silts en
dc.subject Sampling en
dc.subject Disturbance en
dc.subject Compressibility en
dc.subject.lcsh Soils--Sampling en
dc.subject.lcsh Clay--Testing en
dc.subject.lcsh Soil consolidation test en
dc.title Sampling disturbance in soft laminated clay en
dc.title.alternative Sampling disturbance effects in the Bothkennar laminated facies en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.internal.webversions Publisher's version en
dc.internal.webversions http://dx.doi.org/10.1680/geng.2003.156.4.213 en
dc.status Peer reviewed en
dc.identifier.volume 156 en
dc.identifier.issue 4 en
dc.identifier.startpage 213 en
dc.identifier.endpage 224 en
dc.identifier.doi 10.1680/geng.2003.156.4.213
dc.neeo.contributor Long|Michael (Michael M.)|aut| en
dc.description.othersponsorship Enterprise Ireland en
dc.description.othersponsorship British Council en


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