K0 compression and stress relaxation of pumice sand

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dc.contributor.author Kikkawa, N en
dc.contributor.author Pender, Michael en
dc.contributor.author Orense, R en
dc.contributor.author St George, John en
dc.date.accessioned 2012-02-27T02:32:11Z en
dc.date.issued 2012 en
dc.identifier.citation Journal of Geotechnical and Geoenvironmental Engineering 138(5):625-628 2012 en
dc.identifier.issn 1090-0241 en
dc.identifier.uri http://hdl.handle.net/2292/12103 en
dc.description.abstract Pumice sand particles have a vesicular nature, making them light and crushable. Previous research showed that the in situ relative density of pumice deposits cannot be estimated from conventional CPT testing. Because of this, there is a need for more study of the geotechnical properties of this material. First, to distinguish compression behaviour of loose and dense sand, K0 compression tests were performed on pumice specimens at various strain rates, from 0.33%/min to 1000%/min, until a final compression of about 33% of the original specimen length was achieved. Second, after compression, the maximum displacement was held constant for a period of time during which the relaxation of the axial stress was monitored. After unloading, the particle-size distribution was measured to confirm particle crushing. From these results, the magnitude of stress relaxation of loose sand was found to be slightly larger than that of dense sand. On the other hand, dense sand particles exhibited more crushing during loading, and less tendency for stress relaxation and particle rearrangement when the axial deformation is held fixed en
dc.publisher American Society of Civil Engineers en
dc.relation.ispartofseries Journal of Geotechnical and Geoenvironmental Engineering en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from: http://www.sherpa.ac.uk/romeo/issn/1090-0241/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title K0 compression and stress relaxation of pumice sand en
dc.type Journal Article en
dc.identifier.doi 10.1061/(ASCE)GT.1943-5606.0000629 en
pubs.issue 5 en
pubs.begin-page 625 en
pubs.volume 138 en
dc.rights.holder Copyright: American Society of Civil Engineers en
pubs.end-page 628 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 284078 en
pubs.org-id Engineering en
pubs.org-id Civil and Environmental Eng en
pubs.record-created-at-source-date 2012-01-31 en


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