The effect of consolidation and loading stress paths on the static liquefaction of mine tailings

Simple item page
dc.contributor.authorTshabalala, Lourence
dc.date.accessioned2018-01-18T08:32:42Z
dc.date.available2018-01-18T08:32:42Z
dc.date.issued2003
dc.descriptionA dissertation submitted to the Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Master of Science in Engineering.en_ZA
dc.description.abstractThe reliability of using isotropically consolidated specimens in the laboratory determination of liquefaction characteristics of cohesionless sands, as is common practice today, is evaluated. Two series of triaxial tests involved the conventional undrained loading of isotropically and anisotropically consolidated specimens. The third series of tests utilized anisotropically consolidated specimens loaded by following special undrained stress paths. Test results revealed that liquefaction characteristics obtained from isotropically and anisotropically consolidated specimens are different. The effective angles of friction mobilized at peak shear stress and at steady state were greater for anisotropically consolidated specimens. Loading stress path is seen to have no effect on the liquefaction characteristics derived from conventional loading of anisotropically consolidated specimens. The critical stress ratio line is observed to be the line determining the initiation of liquefaction so that any stress path attempting to cross this line, regardless of direction of approach, immediately shows strain-softening behavior leading to liquefaction.en_ZA
dc.description.librarianAC 2018en_ZA
dc.identifier.urihttp://hdl.handle.net/10539/23712
dc.language.isoenen_ZA
dc.subjectMining engineering.en_ZA
dc.subjectTailings dams -- South Africa -- Research.en_ZA
dc.titleThe effect of consolidation and loading stress paths on the static liquefaction of mine tailingsen_ZA
dc.typeThesisen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Tshabalala Lourence 2003.pdf
Size:
21.21 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
ETD Collection