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Conference Paper: Rheological properties of some marine muds dredged from China coasts
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TitleRheological properties of some marine muds dredged from China coasts
 
AuthorsZhang, X1
Bai, Y2
Ng, CO1
 
KeywordsBingham plastic
Mud rheology
Power-law model
 
Issue Date2010
 
PublisherInternational Society of Offshore and Polar Engineers.
 
CitationThe 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?]
 
AbstractThis 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).
 
ISSN1098-6189
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorZhang, X
 
dc.contributor.authorBai, Y
 
dc.contributor.authorNg, CO
 
dc.date.accessioned2010-10-31T12:22:17Z
 
dc.date.available2010-10-31T12:22:17Z
 
dc.date.issued2010
 
dc.description.abstractThis 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.naturelink_to_subscribed_fulltext
 
dc.description.otherThe 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.citationThe 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.epage461
 
dc.identifier.hkuros171551
 
dc.identifier.issn1098-6189
 
dc.identifier.openurl
 
dc.identifier.scopuseid_2-s2.0-77956327938
 
dc.identifier.spage455
 
dc.identifier.urihttp://hdl.handle.net/10722/126327
 
dc.identifier.volume2
 
dc.languageeng
 
dc.publisherInternational Society of Offshore and Polar Engineers.
 
dc.publisher.placeUnited States
 
dc.relation.ispartofProceedings of the International Offshore and Polar Engineering Conference
 
dc.relation.referencesReferences in Scopus
 
dc.subjectBingham plastic
 
dc.subjectMud rheology
 
dc.subjectPower-law model
 
dc.titleRheological properties of some marine muds dredged from China coasts
 
dc.typeConference_Paper
 
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Author Affiliations
  1. The University of Hong Kong
  2. Tianjin University