A comparison between undrained shear strength of clayey soils acquired by “PMT” and laboratory tests

Cheshomi, A; Bakhtiyari, E; Khabbaz, H

A comparison between undrained shear strength of clayey soils acquired by “PMT” and laboratory tests

Cheshomi, A Bakhtiyari, E Khabbaz, H

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Publisher:: Springer Science and Business Media LLC
Publication Type:: Journal Article
Citation:: Arabian Journal of Geosciences, 2020, 13, (14), pp. 640
Issue Date:: 2020-07-01

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Field	Value	Language
dc.contributor.author	Cheshomi, A
dc.contributor.author	Bakhtiyari, E
dc.contributor.author	Khabbaz, H
dc.date.accessioned	2020-10-14T06:19:21Z
dc.date.available	2020-10-14T06:19:21Z
dc.date.issued	2020-07-01
dc.identifier.citation	Arabian Journal of Geosciences, 2020, 13, (14), pp. 640
dc.identifier.issn	1866-7511
dc.identifier.issn	1866-7538
dc.identifier.uri	http://hdl.handle.net/10453/143243
dc.description.abstract	© 2020, Saudi Society for Geosciences. A pressuremeter test (PMT) is one of the in situ tests, which is used to evaluate deformation and strength parameters of soils for various projects, including subway projects. The limit pressure (PL) and undrained shear strength (Su) are the key parameters that are obtained directly and indirectly from the pressuremeter testing results. This research was carried out using geotechnical information obtained from a subway project in Qom city, Iran. Based on 44 PMT and uniaxial tests on very stiff to hard saturated clayey soils, a linear empirical equation between Su − PL and Su − PL* = (PL − σH) with R2 = 0.68 was proposed and it was found that σH had an insignificant effect on the proposed relationship. The effect of physical properties of soil, including plastic index (PI), liquid limit (LL), and water content (ω), was evaluated, and a multivariate equation was proposed between them. A comparison between the equations obtained in this research and those proposed by other researchers reveals that the empirical relationships between Su and PL are associated with the consistency of soils; the stiffer the soil is, the slope of relationship between Su and PL is less.
dc.language	en
dc.publisher	Springer Science and Business Media LLC
dc.relation.ispartof	Arabian Journal of Geosciences
dc.relation.isbasedon	10.1007/s12517-020-05660-9
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	0403 Geology
dc.title	A comparison between undrained shear strength of clayey soils acquired by “PMT” and laboratory tests
dc.type	Journal Article
utslib.citation.volume	13
utslib.for	0403 Geology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2020-10-14T06:19:15Z
pubs.issue	14
pubs.publication-status	Published
pubs.volume	13
utslib.citation.issue	14

Abstract:

© 2020, Saudi Society for Geosciences. A pressuremeter test (PMT) is one of the in situ tests, which is used to evaluate deformation and strength parameters of soils for various projects, including subway projects. The limit pressure (PL) and undrained shear strength (Su) are the key parameters that are obtained directly and indirectly from the pressuremeter testing results. This research was carried out using geotechnical information obtained from a subway project in Qom city, Iran. Based on 44 PMT and uniaxial tests on very stiff to hard saturated clayey soils, a linear empirical equation between Su − PL and Su − PL* = (PL − σH) with R2 = 0.68 was proposed and it was found that σH had an insignificant effect on the proposed relationship. The effect of physical properties of soil, including plastic index (PI), liquid limit (LL), and water content (ω), was evaluated, and a multivariate equation was proposed between them. A comparison between the equations obtained in this research and those proposed by other researchers reveals that the empirical relationships between Su and PL are associated with the consistency of soils; the stiffer the soil is, the slope of relationship between Su and PL is less.

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http://hdl.handle.net/10453/143243