Title:
Geomaterial gradation influences on interface shear behavior

dc.contributor.advisor Frost, J. David
dc.contributor.author Fuggle, Andrew Richard en_US
dc.contributor.committeeMember Burns, Susan
dc.contributor.committeeMember Gokhale, Arun
dc.contributor.committeeMember Lai, James
dc.contributor.committeeMember Santamarina, J. Carlos
dc.contributor.department Civil and Environmental Engineering en_US
dc.date.accessioned 2011-07-06T16:48:59Z
dc.date.available 2011-07-06T16:48:59Z
dc.date.issued 2011-04-04 en_US
dc.description.abstract Particulate materials are ubiquitous in the natural environment and have served throughout human history as one of the basic materials for developing civilizations. In terms of human activity, the handling of particulate materials consumes approximately 10% of all the energy produced on earth. Advances in the study and understanding of particulate materials can thus be expected to have a major impact on society. Geotechnical engineers have a long history of studying particulate materials since the fundamental building blocks of the profession include sands, silts, clays, gravels and ores, all of which are in one form or another particulates. The interface between particulates and other engineered materials is very important in determining the overall behavior of many geotechnical systems. Laboratory experimental studies into interface shear behavior has until now, been largely confined to systems involving uniformly graded sands comprised of a single particle size. This study addresses these potential shortcomings by investigating the behavior of binary particle mixtures in contact with surfaces. The binary nature of the mixtures gives rise to a changing fabric state which in turn can affect the shear strength of the mixture. Accordingly, packing limit states and the shear strength of binary mixtures were investigated across a range of mixtures, varying in particle size ratio and the proportion of fine particles to provide a reference. Binary mixtures in contact with smooth surfaces were investigated from both a global shear response and a contact mechanics perspective. A model was developed that allowed for the prediction of an interface friction coefficient based on fundamental material properties, particle and mixture parameters. Surface roughness changes as a result of shearing were also examined. The interface shear behavior with rough interfaces was examined in the context of the relative roughness between particles and surface features. The interpretation of traditional measures of relative roughness suffer from the need for a definitive average particle size, which is ambiguous in the case of non-uniform mixtures. Measures of an applicable average particle size for binary mixtures were evaluated. en_US
dc.description.degree Ph.D. en_US
dc.identifier.uri http://hdl.handle.net/1853/39602
dc.publisher Georgia Institute of Technology en_US
dc.subject Shear band en_US
dc.subject Interface shear en_US
dc.subject Particle size ratio en_US
dc.subject Void ratio en_US
dc.subject Interface shear strength en_US
dc.subject.lcsh Shear (Mechanics)
dc.subject.lcsh Shear strength of soils
dc.subject.lcsh Shear strength of soils Testing
dc.title Geomaterial gradation influences on interface shear behavior en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Frost, J. David
local.contributor.corporatename School of Civil and Environmental Engineering
local.contributor.corporatename College of Engineering
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relation.isOrgUnitOfPublication 88639fad-d3ae-4867-9e7a-7c9e6d2ecc7c
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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