A review on the influence of degree of saturation on small strain shear modulus of unsaturated soils

Ngoc, TP; Li, D; Fatahi, B; Khabbaz, H

A review on the influence of degree of saturation on small strain shear modulus of unsaturated soils

Ngoc, TP Li, D Fatahi, B

Khabbaz, H

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Publication Type:: Conference Proceeding
Citation:: ICSMGE 2017 - 19th International Conference on Soil Mechanics and Geotechnical Engineering, 2017, 2017-September pp. 1225 - 1228
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Ngoc, TP	en_US
dc.contributor.author	Li, D	en_US
dc.contributor.author	Fatahi, B https://orcid.org/0000-0002-7920-6946	en_US
dc.contributor.author	Khabbaz, H https://orcid.org/0000-0001-6637-4601	en_US
dc.date.issued	2017-01-01	en_US
dc.identifier.citation	ICSMGE 2017 - 19th International Conference on Soil Mechanics and Geotechnical Engineering, 2017, 2017-September pp. 1225 - 1228	en_US
dc.identifier.uri	http://hdl.handle.net/10453/117755
dc.description.abstract	© 2017 19th ICSMGE Secretariat. All rights reserved. Small-strain shear modulus (Gmax) is an important parameter in the analysis and design of structures resting on liquefiable soils, particularly under dynamic loads such as earthquakes. In real condition, soil layers near the ground surface consistently undergo variation of degree of saturation (Sr) due to the change of weather or loading-unloading processes that lead to the variation of Gmax. To date, this area has received limited attention and still encounters difficulties in evaluating the influence of Sr on Gmax as well as capturing the effect of hysteresis on water retention behaviour. This study concentrates on the relationship between Sr and Gmax based on available experimental data in literature. The results of the analysis show that Sr plays an important role in the magnitude of Gmax for both cohesionless and cohesive unsaturated soils, while it has a greater influence on the latter. In order to predict Gmax for cohesive soils within the full range of degree of saturation, apart from the influence of Sr on the contribution of matric suction (ym), the influence of Sr on the contribution of plastic fines, salt concentration and van der Waals attraction should be additionally included.	en_US
dc.relation.ispartof	ICSMGE 2017 - 19th International Conference on Soil Mechanics and Geotechnical Engineering	en_US
dc.title	A review on the influence of degree of saturation on small strain shear modulus of unsaturated soils	en_US
dc.type	Conference Proceeding
utslib.citation.volume	2017-September	en_US
utslib.for	0907 Environmental Engineering	en_US
pubs.embargo.period	Not known	en_US
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	open_access
pubs.publication-status	Published	en_US
pubs.volume	2017-September	en_US

Abstract:

© 2017 19th ICSMGE Secretariat. All rights reserved. Small-strain shear modulus (Gmax) is an important parameter in the analysis and design of structures resting on liquefiable soils, particularly under dynamic loads such as earthquakes. In real condition, soil layers near the ground surface consistently undergo variation of degree of saturation (Sr) due to the change of weather or loading-unloading processes that lead to the variation of Gmax. To date, this area has received limited attention and still encounters difficulties in evaluating the influence of Sr on Gmax as well as capturing the effect of hysteresis on water retention behaviour. This study concentrates on the relationship between Sr and Gmax based on available experimental data in literature. The results of the analysis show that Sr plays an important role in the magnitude of Gmax for both cohesionless and cohesive unsaturated soils, while it has a greater influence on the latter. In order to predict Gmax for cohesive soils within the full range of degree of saturation, apart from the influence of Sr on the contribution of matric suction (ym), the influence of Sr on the contribution of plastic fines, salt concentration and van der Waals attraction should be additionally included.

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http://hdl.handle.net/10453/117755