Small Strain Behaviour of a Compacted Subgrade Soil

Heitor, A; Indraratna, B; Rujikiatkamjorn, C

Small Strain Behaviour of a Compacted Subgrade Soil

Heitor, A Indraratna, B

Rujikiatkamjorn, C

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Publisher:: ELSEVIER SCIENCE BV
Publication Type:: Journal Article
Citation:: Procedia Engineering, 2016, 143, pp. 260-267
Issue Date:: 2016-01-01

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Field	Value	Language
dc.contributor.author	Heitor, A
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.contributor.author	Rujikiatkamjorn, C https://orcid.org/0000-0001-8625-2839
dc.contributor.editor	Correia, AG
dc.date.accessioned	2022-02-21T03:48:32Z
dc.date.available	2022-02-21T03:48:32Z
dc.date.issued	2016-01-01
dc.identifier.citation	Procedia Engineering, 2016, 143, pp. 260-267
dc.identifier.issn	1877-7058
dc.identifier.issn	1877-7058
dc.identifier.uri	http://hdl.handle.net/10453/154717
dc.description.abstract	The small strain behaviour is a key indicator for assessing the performance of compacted fills. The initial compaction conditions i.e. water content and applied energy, govern compaction effectiveness and, thus, the structure and matric suction of compacted subgrade soil. This paper presents an experimental study of the small strain behaviour of a typical compacted subgrade soil, i.e. silty sand, prepared with different compaction conditions. Specimens were prepared for different compaction states to mimic the typical acceptance criteria of end-product specifications. The small strain modulus (G0) was evaluated using Bender elements, while the post-compaction matric suction was measured using the filter paper method and a tensiometer. The experimental data indicates a strong modulus dependency on water content or suction across the compaction plane but suggests G0 is better described as a function of the degree of saturation (Sr). The laboratory results are also examined in light of common end-product specifications, which show that it may be beneficial to compact the soil slightly dry of optimum moisture content from the modulus point of view.
dc.language	English
dc.publisher	ELSEVIER SCIENCE BV
dc.relation.ispartof	Procedia Engineering
dc.relation.isbasedon	10.1016/j.proeng.2016.06.033
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	09 Engineering
dc.title	Small Strain Behaviour of a Compacted Subgrade Soil
dc.type	Journal Article
utslib.citation.volume	143
utslib.location.activity	Guimaraes, PORTUGAL
utslib.for	09 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	2022-02-21T03:48:31Z
pubs.publication-status	Published
pubs.volume	143

Abstract:

The small strain behaviour is a key indicator for assessing the performance of compacted fills. The initial compaction conditions i.e. water content and applied energy, govern compaction effectiveness and, thus, the structure and matric suction of compacted subgrade soil. This paper presents an experimental study of the small strain behaviour of a typical compacted subgrade soil, i.e. silty sand, prepared with different compaction conditions. Specimens were prepared for different compaction states to mimic the typical acceptance criteria of end-product specifications. The small strain modulus (G0) was evaluated using Bender elements, while the post-compaction matric suction was measured using the filter paper method and a tensiometer. The experimental data indicates a strong modulus dependency on water content or suction across the compaction plane but suggests G0 is better described as a function of the degree of saturation (Sr). The laboratory results are also examined in light of common end-product specifications, which show that it may be beneficial to compact the soil slightly dry of optimum moisture content from the modulus point of view.

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http://hdl.handle.net/10453/154717