A new approach for investigating the engineering behavior and mechanical properties of bonded sandy soils

Richard Vall Ngangu Ricardo*, Musaffa Ayşen Lav

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Cemented soils are widely encountered in the world, and with the growth of population, their exploitation becomes a necessity, especially, by building on diverse engineering infrastructures. The stability of those infrastructures is directly related to the nature and the properties of bonding in presence. This paper aims to investigate a new approach in studying the engineering behavior and mechanical properties of bonded sandy soils of different bonding levels, by using artificial soils similar to natural ones. The investigation was performed on four types of artificially bonded materials and one unbonded soil. The experiment was conducted in the laboratory under consolidated undrained isotropic triaxial compression tests subjected to three different levels of confining pressure. A new parameter, bonding index (Bi), was defined to implement the new approach. It is found that thevariation of bonding and confining pressure alters significantly the response of soils. The cohesion intercept, the friction angle, the shear stress, and the brittleness index increase together with Bi, especially at low confiningstress. However, Bi decreases when the confining pressure increases, restraining the role of bonding strength. Soilswith higher Bi are identified to be more brittle. The determination of the confining stress level is found to be relatedto the bonding degree, which is expressed in terms of Bi. The bonding index is assessed as an efficient parameter whereby the bonded soil response can be investigated. Thus, the new approach offers an alternative for studying the engineering behavior of bonded soils.

Original languageEnglish
Pages (from-to)81-91
Number of pages11
JournalInternational Journal of GEOMATE
Volume21
Issue number86
DOIs
Publication statusPublished - Oct 2021

Bibliographical note

Publisher Copyright:
© Int. J. of GEOMATE All rights reserved, including making copies unless permission is obtained from the copyright proprietors.

Keywords

  • Bonded soil
  • Bonding index
  • Brittleness
  • Sand
  • Triaxial test

Fingerprint

Dive into the research topics of 'A new approach for investigating the engineering behavior and mechanical properties of bonded sandy soils'. Together they form a unique fingerprint.

Cite this