Soil structure changes during drained and undrained triaxial shear of a clayey soil

Cetin H., GÖKOĞLU A.

SOILS AND FOUNDATIONS, vol.53, no.5, pp.628-638, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 53 Issue: 5
  • Publication Date: 2013
  • Doi Number: 10.1016/j.sandf.2013.08.002
  • Journal Name: SOILS AND FOUNDATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.628-638
  • Keywords: Triaxial shear test, Soil structure, Soil fabric, Preferred orientation, Seismic, Aseismic, X-RAY CT, PORE ORIENTATIONS, MEERS FAULT, PARTICLE, MICROSTRUCTURE, PERSPECTIVE, SAND
  • Çukurova University Affiliated: Yes

Abstract

Orientations during drained and undrained triaxial shear tests on an artilicially made clayey soil were studied. The results show that the orientation pattern before shearing is nearly random, although there may be some degree of preferred orientation caused by the overburden pressure. Becoming higher towards the failure plane, the degree of preferred orientation sharply increases in both tests as the compression increases until failure. It was discovered that in the consolidated undrained tests, failure occurs at higher levels of strain than previously believed, while in the consolidated drained tests, failure occurs at much lower levels of strain than previously believed.