Assessment of multidirectional stiffness of a uniformly graded gravel using disk transducers

Troyee Dutta, Masahide Otsubo, Reiko Kuwano, Takeshi Sato

Research output: Contribution to specialist publicationArticleResearch


The utilization of gravelly materials in various geotechnical applications,
necessitates the accurate estimation of small strain stiffness to describe their stability and deformation characteristics. Granular materials are observed to be inherently anisotropic in nature displaying dissimilar stiffness in vertical and horizontal directions during deposition of the particles or during compaction. In the present study, a new design configuration of planar piezoelectric transducers is proposed which can assess nine different stiffnesses to describe the stiffness anisotropy of granular material. It is seen that stiffness measured in horizontal directions are considerably greater than those calculated in the vertical direction.
Original languageEnglish
Number of pages9
Specialist publicationBulletin of ERS
PublisherUniversity of Tokyo Press
Publication statusPublished - 2019
Externally publishedYes

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