On compression behavior and particle breakage of carbonate silty sands

Tong, CX; Dong, ZL; Sun, Q; Zhang, S; Zheng, JX; Sheng, D

On compression behavior and particle breakage of carbonate silty sands

Tong, CX Dong, ZL Sun, Q Zhang, S Zheng, JX Sheng, D

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Engineering Geology, 2022, 297
Issue Date:: 2022-02-01

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Field	Value	Language
dc.contributor.author	Tong, CX
dc.contributor.author	Dong, ZL
dc.contributor.author	Sun, Q
dc.contributor.author	Zhang, S
dc.contributor.author	Zheng, JX
dc.contributor.author	Sheng, D https://orcid.org/0000-0002-1665-6931
dc.date.accessioned	2023-04-06T01:50:02Z
dc.date.available	2023-04-06T01:50:02Z
dc.date.issued	2022-02-01
dc.identifier.citation	Engineering Geology, 2022, 297
dc.identifier.issn	0013-7952
dc.identifier.issn	1872-6917
dc.identifier.uri	http://hdl.handle.net/10453/169258
dc.description.abstract	Carbonate soils are high in compressibility and low in particle strength, and therefore need special treatment for many geotechnical applications. This paper presents comprehensive one-dimensional compression tests to investigate the compression behavior and particle breakage of carbonate soils with various initial particle size distributions (PSDs) and a wide range of initial void ratios at a high effective vertical stress of 32 MPa. A clear shape transition in terms of the void ratio against effective vertical stress was observed with varying silt fraction and void ratio. The deformation mechanism for the samples with less silt fraction and higher void ratio is mainly dominated by the particle-breakage-induced unlocking effect. Samples with more silt fraction and lower void ratio will experience less particle breakage and their deformation mechanism is mainly attributed to interparticle locking effect. A ‘transitional’ mode of behavior without a unique normal compression line was identified for the samples with silt fraction ranging from 1.6% to 33%. It was also found that carbonate soil samples with both ‘transitional’ and ‘non-transitional’ modes of compression behavior may both experience considerable amount of particle breakage and show different trends in the evolution of particle shape.
dc.language	English
dc.publisher	ELSEVIER
dc.relation.ispartof	Engineering Geology
dc.relation.isbasedon	10.1016/j.enggeo.2021.106492
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 0909 Geomatic Engineering, 0999 Other Engineering
dc.subject.classification	Geological & Geomatics Engineering
dc.title	On compression behavior and particle breakage of carbonate silty sands
dc.type	Journal Article
utslib.citation.volume	297
utslib.for	0905 Civil Engineering
utslib.for	0909 Geomatic Engineering
utslib.for	0999 Other Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2023-04-06T01:50:00Z
pubs.publication-status	Published
pubs.volume	297

Abstract:

Carbonate soils are high in compressibility and low in particle strength, and therefore need special treatment for many geotechnical applications. This paper presents comprehensive one-dimensional compression tests to investigate the compression behavior and particle breakage of carbonate soils with various initial particle size distributions (PSDs) and a wide range of initial void ratios at a high effective vertical stress of 32 MPa. A clear shape transition in terms of the void ratio against effective vertical stress was observed with varying silt fraction and void ratio. The deformation mechanism for the samples with less silt fraction and higher void ratio is mainly dominated by the particle-breakage-induced unlocking effect. Samples with more silt fraction and lower void ratio will experience less particle breakage and their deformation mechanism is mainly attributed to interparticle locking effect. A ‘transitional’ mode of behavior without a unique normal compression line was identified for the samples with silt fraction ranging from 1.6% to 33%. It was also found that carbonate soil samples with both ‘transitional’ and ‘non-transitional’ modes of compression behavior may both experience considerable amount of particle breakage and show different trends in the evolution of particle shape.

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http://hdl.handle.net/10453/169258