Conference Paper: Rheological properties of some marine muds dredged from China coasts

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Title	Rheological properties of some marine muds dredged from China coasts
Authors	Zhang, X1 Bai, Y2 Ng, CO1
Keywords	Bingham plastic Mud rheology Power-law model
Issue Date	2010
Publisher	International Society of Offshore and Polar Engineers.
Citation	The 12th International Offshore and Polar Engineering Conference (ISOPE 2010), Beijing, China, 20-25 June 2010. In Proceedings Of The International Offshore And Polar Engineering Conference, 2010, v. 2, p. 455-461 [How to Cite?]
Abstract	This is an experimental study that aims to examine the rheological response of natural muds under steady simple shear, using a controlled-shear-stress system. Natural estuarine muds dredged from Haihe River in Tianjin and Mazhou Island near Shenzhen are tested. Experimental data at low shear rates are obtained and analyzed based on the Bingham and power-law models. The applicability of these two models in different ranges of shear rate is compared. It is found that the Bingham model does not provide a satisfactory description of the shear-thinning behavior of the muds at very low shear rates. The density dependence of the rheological parameters in terms of the Bingham and power-law models is also examined. On relating the rheological behavior to the particle size distribution, it is pointed out that the presence of coarse particles with a mean diameter d > 0.1 mm may lead to dislocation of particles in the internal structure, thereby causing the yield stress and viscosity of the material to decrease. Copyright © 2010 by The International Society of Offshore and Polar Engineers (ISOPE).
ISSN	1098-6189
References	References in Scopus

DC Field	Value
dc.contributor.author	Zhang, X
dc.contributor.author	Bai, Y
dc.contributor.author	Ng, CO
dc.date.accessioned	2010-10-31T12:22:17Z
dc.date.available	2010-10-31T12:22:17Z
dc.date.issued	2010
dc.description.abstract	This is an experimental study that aims to examine the rheological response of natural muds under steady simple shear, using a controlled-shear-stress system. Natural estuarine muds dredged from Haihe River in Tianjin and Mazhou Island near Shenzhen are tested. Experimental data at low shear rates are obtained and analyzed based on the Bingham and power-law models. The applicability of these two models in different ranges of shear rate is compared. It is found that the Bingham model does not provide a satisfactory description of the shear-thinning behavior of the muds at very low shear rates. The density dependence of the rheological parameters in terms of the Bingham and power-law models is also examined. On relating the rheological behavior to the particle size distribution, it is pointed out that the presence of coarse particles with a mean diameter d > 0.1 mm may lead to dislocation of particles in the internal structure, thereby causing the yield stress and viscosity of the material to decrease. Copyright © 2010 by The International Society of Offshore and Polar Engineers (ISOPE).
dc.description.nature	Link_to_subscribed_fulltext
dc.description.other	The 12th International Offshore and Polar Engineering Conference (ISOPE 2010), Beijing, China, 20-25 June 2010. In Proceedings Of The International Offshore And Polar Engineering Conference, 2010, v. 2, p. 455-461
dc.identifier.citation	The 12th International Offshore and Polar Engineering Conference (ISOPE 2010), Beijing, China, 20-25 June 2010. In Proceedings Of The International Offshore And Polar Engineering Conference, 2010, v. 2, p. 455-461 [How to Cite?]
dc.identifier.epage	461
dc.identifier.hkuros	171551
dc.identifier.issn	1098-6189
dc.identifier.openurl
dc.identifier.scopus	eid_2-s2.0-77956327938
dc.identifier.spage	455
dc.identifier.uri	http://hdl.handle.net/10722/126327
dc.identifier.volume	2
dc.language	eng
dc.publisher	International Society of Offshore and Polar Engineers.
dc.publisher.place	United States
dc.relation.ispartof	Proceedings of the International Offshore and Polar Engineering Conference
dc.relation.references	References in Scopus
dc.subject	Bingham plastic
dc.subject	Mud rheology
dc.subject	Power-law model
dc.title	Rheological properties of some marine muds dredged from China coasts
dc.type	Conference_Paper

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Author Affiliations

The University of Hong Kong
Tianjin University

Conference Paper: Rheological properties of some marine muds dredged from China coasts

The HKU Scholars Hub has contact details for these author(s).