Stiffness of Natural and Reconstituted Augusta Clay at Small to Medium Strains

  • Giuseppe Lanzo
  • Alessandro Pagliaroli
Conference paper
Part of the Solid Mechanics and Its Applications book series (SMIA, volume 146)


Cyclic simple shear tests were conducted on undisturbed and reconstituted specimens of high-plasticity Augusta clay. Test results were examined in terms of stiffness characteristics either in the small and medium strain range. It has been found that the small-strain shear modulus of natural soil is always higher than that of the reconstituted material. A normalization procedure was proved useful in interpreting the small-strain test results. At larger strain levels, the normalized shear modulus of natural soil showed a steeper decrease with shear strain amplitude with respect to that detected on the reconstituted material, thus evidencing a more marked non-linear behavior. The influence of soil structure was invoked to explain the observed differences.


Void Ratio Natural Clay Stiff Clay Medium Strain Reconstituted Sample 
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Copyright information

© Springer 2007

Authors and Affiliations

  • Giuseppe Lanzo
    • 1
  • Alessandro Pagliaroli
    • 1
  1. 1.Dipartimento di Ingegneria Strutturale e GeotecnicaUniversità di Roma “La Sapienza”RomeItaly

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