1,943 research outputs found

    Numerical analyses of field vane tests on soft clays

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    This paper focuses on the use of field vane, a popular instrument for determining the undrained shear strength (su) of soft clays. In this regard, suitable corrections must be applied in order to adequately interpret the recorded measurements. Here the role played by some relevant factors (i.e., anisotropy and strain-rate effects) in influencing su values is investigated on the basis of FEM numerical analyses carried out via the adoption of PLAXIS-3D software. The results of the numerical analyses generally fit with information provided by the scientific literature using independent measurements. Moreover, they highlight a relevant effect of anisotropy for low values of the plasticity index of investigated clayey soils. On the contrary, for high values of the plasticity index, anisotropy plays a marginal role while strain rate effects prevail. All these considerations suggest the field vane tests most reliable for clayey soils with high plasticity index, although a correction is needed in order to limit strain rate effects

    Flat dilatometer (DMT). Applications and recent developments

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    Since the original basic paper on the flat dilatometer (Marchetti 1980) a large number of papers, including manuals and standards, have been published. Aims of this paper are: (a) to briefly describe this in situ test; (b) to summarize the essential related content available in the literature; (c) to give an overview of its main applications; (d) to give information on the most recent developments, thereby permitting the unfamiliar reader to gain in a short time a basic knowledge of the DMT

    A Review of Some Updates in the 13th Edition of “Sears and Zemansky’s University Physics with Modern Physics” (Authors: Hugh D. Young and Roger A. Freedman; contributing author, A. Lewis Ford; 2012)

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    Young, H.D.; and Freedman, R.A.; Ford, A.L. (contributing author). 2012. Sears and Zemansky’s University Physics with Modern Physics. 13th ed.Pearson Education, Inc., Addison-Wesley, San Francisco, CA, USA
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