Investigation of the coefficient of consolidation of fine-grained soils using combined apparatus


Asadi R., KAYABALI K., BALCI M. C.

BULLETIN OF THE MINERAL RESEARCH AND EXPLORATION, cilt.166, sa.1, ss.71-83, 2021 (ESCI) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 166 Sayı: 1
  • Basım Tarihi: 2021
  • Doi Numarası: 10.19111/bulletinofmre.835936
  • Dergi Adı: BULLETIN OF THE MINERAL RESEARCH AND EXPLORATION
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus, Directory of Open Access Journals, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.71-83
  • Anahtar Kelimeler: Coefficient of Consolidation, Coefficient of Permeability, Oedometer Test, Combined Apparatus
  • Ankara Üniversitesi Adresli: Evet

Özet

The scope of this investigation is to compare the coefficient of consolidation (cv) values defined by the Taylor's Square Root of Time Fitting Method, which is obtained from the conventional oedometer tests, with the cv values calculated by Terzaghi's One Dimensional (1D) Consolidation Theory, which is obtained from the permeability-consolidation tests performed with a combined apparatus specifically designed for this study. In addition, an empirical relation is developed to determine c(v) using the coefficient of permeability (k) and index properties of the soils. The c(v) values obtained from the permeability-consolidation tests using the combined apparatus were found to be larger than the c(v) values defined by the Taylor's method, which is one of the oedometer tests. The findings showed that the difference was more prominent in the soil samples with a high plasticity. It was also found that the c(v) calculated by the Taylor's method exhibited a distribution in a wide range with the increased load depending on the degree of plasticity of the soil. The c(v) obtained from the combined apparatus it decreased with low load values and increased with higher load levels. The c(v) obtained by the proposed empirical relationship showed good agreement with the cv defined by permeability-consolidation relationships.