Strength and Deformation Characteristics of Calcareous Sands Improved by PFA

Chen, QS; Peng, W; Tao, GL; Nimbalkar, S

Strength and Deformation Characteristics of Calcareous Sands Improved by PFA

Chen, QS Peng, W Tao, GL Nimbalkar, S

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Publisher:: Springer Verlag
Publication Type:: Journal Article
Citation:: KSCE Journal of Civil Engineering, 2021, 25, (1), pp. 60-69
Issue Date:: 2021-01-01

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Field	Value	Language
dc.contributor.author	Chen, QS
dc.contributor.author	Peng, W
dc.contributor.author	Tao, GL
dc.contributor.author	Nimbalkar, S https://orcid.org/0000-0002-1538-3396
dc.date.accessioned	2022-06-09T01:47:19Z
dc.date.available	2022-06-09T01:47:19Z
dc.date.issued	2021-01-01
dc.identifier.citation	KSCE Journal of Civil Engineering, 2021, 25, (1), pp. 60-69
dc.identifier.issn	1226-7988
dc.identifier.issn	1976-3808
dc.identifier.uri	http://hdl.handle.net/10453/158031
dc.description.abstract	© 2020, Korean Society of Civil Engineers. Calcareous sand is widely distributed in the islands of the South China Sea, which could be promisingly used as the construction materials. However, particle breakage commonly occurs in calcareous sands, which may significantly influence their mechanical characteristics. To address these issues, an eco-friendly agent, i.e., polyurethane foam adhesive (PFA) is proposed to improve the engineering properties of calcareous sands, compared to the commonly used alkaline stabilizing agents (e.g., lime, cement). The objective of this work is to examine the effectiveness of using PFA in improving the strength-deformation properties of calcareous sand. A series of laboratory tests including direct shear tests, unconfined compression tests, and oedometer tests were performed on the calcareous sands improved by PFA. In addition, A scanning electron microscope (SEM) was conducted to reveal microstructural analysis of using PFA for calcareous sand. The experimental results provided insights into the shear strength, deformation modulus, as well as the micro-structural characteristics of improved calcareous sands with various PFA contents and particle size distributions.
dc.language	English
dc.publisher	Springer Verlag
dc.relation.ispartof	KSCE Journal of Civil Engineering
dc.relation.isbasedon	10.1007/s12205-020-0458-7
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering
dc.title	Strength and Deformation Characteristics of Calcareous Sands Improved by PFA
dc.type	Journal Article
utslib.citation.volume	25
utslib.for	0905 Civil 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
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access	*
pubs.consider-herdc	true
dc.date.updated	2022-06-09T01:47:04Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	25
utslib.citation.issue	1

Abstract:

© 2020, Korean Society of Civil Engineers. Calcareous sand is widely distributed in the islands of the South China Sea, which could be promisingly used as the construction materials. However, particle breakage commonly occurs in calcareous sands, which may significantly influence their mechanical characteristics. To address these issues, an eco-friendly agent, i.e., polyurethane foam adhesive (PFA) is proposed to improve the engineering properties of calcareous sands, compared to the commonly used alkaline stabilizing agents (e.g., lime, cement). The objective of this work is to examine the effectiveness of using PFA in improving the strength-deformation properties of calcareous sand. A series of laboratory tests including direct shear tests, unconfined compression tests, and oedometer tests were performed on the calcareous sands improved by PFA. In addition, A scanning electron microscope (SEM) was conducted to reveal microstructural analysis of using PFA for calcareous sand. The experimental results provided insights into the shear strength, deformation modulus, as well as the micro-structural characteristics of improved calcareous sands with various PFA contents and particle size distributions.

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http://hdl.handle.net/10453/158031