dc.contributor.author |
Asadi, Mohammad Bagher |
|
dc.contributor.author |
Orense, Rolando P |
|
dc.contributor.author |
Asadi, Mohammad Sadeq |
|
dc.contributor.author |
Pender, Michael J |
|
dc.date.accessioned |
2022-02-22T22:20:01Z |
|
dc.date.available |
2022-02-22T22:20:01Z |
|
dc.date.issued |
2022-2-1 |
|
dc.identifier.citation |
Soils and Foundations 62(1):101098 01 Feb 2022 |
|
dc.identifier.issn |
0385-1621 |
|
dc.identifier.uri |
https://hdl.handle.net/2292/58303 |
|
dc.description.abstract |
Natural pumiceous (NP) sands containing pumice particles, a type of volcanic soil, are commonly found in the central part of the North Island in New Zealand. The pumice particles are highly crushable, compressible, lightweight and angular, making engineering assessment of their properties problematic. In this paper, several series of bender element and undrained cyclic triaxial tests were performed on reconstituted and undisturbed NP sands to determine their small-strain shear modulus (Gmax) and cyclic resistance ratio (CRR). Furthermore, similar tests were also conducted on normal hard-grained sands (e.g., Toyoura sand) for the purpose of comparison. The results showed that the NP sands have considerably lower Gmax compared to normal sands, resulting in their higher deformability during the initial stages of the cyclic loading test. The high angularity of NP sands play an important role toward the end of the cyclic loading and contributed to their higher CRR. Next, the ratio of CRR/Gmax for each sample was correlated to a level of strain denoted as cyclic yield strain (εay), which was found to be significantly dependent on the percentages of pumice particles present in the natural soils. On the other hand, the εay was found to be less sensitive to the consolidation stress (σ′c) and the relative density (Dr) of the materials. For example, over different values of σ′c and Dr, NP sands have substantially higher values of cyclic yield strain due to their lower Gmax and higher CRR when compared with those of ordinary sands. |
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dc.language |
en |
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dc.publisher |
Elsevier BV |
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dc.relation.ispartofseries |
Soils and Foundations |
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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. |
|
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
|
dc.rights.uri |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
|
dc.subject |
0503 Soil Sciences |
|
dc.subject |
0905 Civil Engineering |
|
dc.subject |
0999 Other Engineering |
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dc.title |
A unified approach to link small-strain shear modulus and liquefaction resistance of pumiceous sand |
|
dc.type |
Journal Article |
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dc.identifier.doi |
10.1016/j.sandf.2021.101098 |
|
pubs.issue |
1 |
|
pubs.begin-page |
101098 |
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pubs.volume |
62 |
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dc.date.updated |
2022-01-31T20:34:57Z |
|
dc.rights.holder |
Copyright: The Japanese Geotechnical Society |
en |
pubs.publication-status |
Accepted |
|
dc.rights.accessrights |
http://purl.org/eprint/accessRights/OpenAccess |
en |
pubs.subtype |
Journal Article |
|
pubs.elements-id |
880808 |
|
pubs.number |
101098 |
|