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

Lanzo, Giuseppe / Pagliaroli, Alessandro

Abstract 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.

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

Lanzo, Giuseppe / Pagliaroli, Alessandro

Abstract 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.

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

Lanzo, Giuseppe / Pagliaroli, Alessandro

Abstract 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.

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Title:

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

Contributors:

Lanzo, Giuseppe (author) / Pagliaroli, Alessandro (author)

Published in:

Soil Stress-Strain Behavior: Measurement, Modeling and Analysis ; 323-331

Solid Mechanics and Its Applications ; 146

Publication date:

2007-01-01

Size:

9 pages

ISBN:

978-1-4020-6146-2 , 978-1-4020-6145-5

ISSN:

2214-7764 , 0925-0042

DOI:

https://doi.org/10.1007/978-1-4020-6146-2_16

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Void Ratio , Natural Clay , Stiff Clay , Medium Strain , Reconstituted Sample Physics , Soft and Granular Matter, Complex Fluids and Microfluidics , Continuum Mechanics and Mechanics of Materials , Building Materials , Geoengineering, Foundations, Hydraulics , Numerical and Computational Physics

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