Geotechnical Engineering and Soil Mechanics

Remarks on the stiffness at small strains of six Italian clays

Michele Jamiolkowski, Renato Lancellotta, Diego Carlo Lo Presti

Feb 11, 2026 | 146 citations

Abstract

Abstract

The paper summarizes the results of a series of in situ and laboratory tests aimed at investigating the small strain shear modulus G0 of six different Italian natural clays. The obtained experimental data were analyzed to assess the influence on G0 of the following factors: soil state intended as a combination of the current void ratio e and the acting effective stress https://www.w3.org/1998/Math/MathML" display="inline"> ϵ ij ≤ ϵ ij et overconsolidation due to unloading and to aging; the plane of polarization with respect to the principal stress directions for seismic body waves. All laboratory tests have been performed on specimens of high quality undisturbed samples that were reconsolidated to the best estimate of the in situ geostatic effective stresses.

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Michele Jamiolkowski

first

Renato Lancellotta

middle

Diego Carlo Lo Presti

last | ORCID 0000-0002-3147-7800

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BibTeX

@article{Jamiolkowski2026Remarks,
  title = {Remarks on the stiffness at small strains of six Italian clays},
  author = {Michele Jamiolkowski and Renato Lancellotta and Diego Carlo Lo Presti},
  year = {2026},
  doi = {10.1201/9781003761426-21},
  url = {https://doi.org/10.1201/9781003761426-21}
}

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