Role of particle angularity on the mechanical behavior of granular mixtures

H. Shin*, J. C. Santamarina

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

137 Scopus citations


Particle shape affects the mechanical behavior of soils, including packing density, stiffness, volume change during shear, and strength. Laboratory experiments conducted to study the mechanical response of sand mixtures made of round and angular grains show an increase in void ratio, small strain shear modulus Gmax (constant fabric), oedometric compressibility CC (fabric changes), and friction angle but a decrease in lateral stress coefficient k0 as the mass fraction of angular particles increases. These results reflect variations in particle mobility and highlight the relative role of contact stiffness versus fabric changes.

Original languageEnglish (US)
Pages (from-to)353-355
Number of pages3
JournalJournal of Geotechnical and Geoenvironmental Engineering
Issue number2
StatePublished - 2013
Externally publishedYes


  • Coefficient of earth pressure at rest
  • Compressibility
  • Mixture
  • Particle shape
  • Shear wave velocity

ASJC Scopus subject areas

  • General Environmental Science
  • Geotechnical Engineering and Engineering Geology


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