Effect of partial saturation on the compressibility of crushable sands

Authors

  • Osses, Rodrigo Departamento Ingeniería de Obras Civiles, Universidad de La Frontera ; Departamento de Ingeniería Estructural y Geotécnica, Pontificia Universidad Católica de Chile
  • Carlos Ovalle Research Institute of Mining and Environment RIME UQAT-Polytechnique, Department of Civil, Geological and Mining Engineering, Polytecnique Montréal
  • Pineda, Jubert Priority Research Centre for Geotechnical Science and Engineering, School of Engineering, The University of Newcastle, CallaghanCampus, Building
  • Pedro, Barrios DICTUC S.A.

DOI:

https://doi.org/10.4067/S0718-28132019000100015%20

Keywords:

particle breakage, creep, unsaturated sand, compressibility

Abstract

An experimental laboratory study of the effect of moisture on compressibility and creep in two crushable sands is presented, by means of oedometric tests in partially saturated samples. The material humidity is controlled by the vapor control technique, in order to cover a wide range of suction from 0 to 340 MPa. The results show that, as the suction decreases (i.e.humidity increases), both compressibility and creep deformations increase, due to the higher amount of particle breakage. This phenomenon has applications in degradation of granular materials under significant changes of humidity, as well as deformations by creep in geotechnical works, such as rockfill dams, railway ballast, among other cases.

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Published

2019-06-01

How to Cite

Osses, R. ., Ovalle, C. ., Pineda, J., & Barrios, P. . (2019). Effect of partial saturation on the compressibility of crushable sands. Obras Y Proyectos, (25), 15–21. https://doi.org/10.4067/S0718-28132019000100015

Issue

No. 25 (2019)

Section

Articles

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