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A Study of a Variety of Sands in Stress-dilatancy Relationships  

박춘식 (창원대학교 토목공학과)
장정욱 (청주대학교 지구환경시스템공학부)
Publication Information
Journal of the Korean Geotechnical Society / v.18, no.1, 2002 , pp. 41-48 More about this Journal
Abstract
Anisotropy of stiffness, from extremely small strains to post-failure strains, of isotropically consolidated air-pluviated sands in plane strain compression was studied by using the newly developed instrumentation fur small strain measurements, Seven types of sand of world-wide origins were tested, which have been extensively used for research purposes. Stress-strain relationships for a wide range of strain from about 0.0001% to the peak were obtained by measuring axial and lateral strains locally free from the effects of bedding and membrane penetration errors at the specimen boundaries. The result showed that the relationship between the principal stress ratio and the principal strain increment ratio was constant, being rarely affected by the over-consolidation ratio and the confining pressure. Although in the small strain the anisotropy hardly affected the relationship between the principal stress ratio and the principal strain increment ratio, the K value around the peak varied according to the $\delta$ value. In general, Rowe\`s stress-dilatancy equation works fairly well from the small strain to the peak.
Keywords
Anisotropy; Over-consolidation ratio; Plane strain compression; Small strain; Stress-dilatancy relationship;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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