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  2. Critical state soil mechanics - Wikipedia

    en.wikipedia.org/wiki/Critical_state_soil_mechanics

    This behavior, critical state soil mechanics simply assumes as a given. For these reasons, critical-state and elasto-plastic soil mechanics have been subject to charges of scholasticism; the tests to demonstrated its validity are usually "conformation tests" where only simple stress-strain curves are demonstrated to be modeled satisfactorily.

  3. Shear strength (soil) - Wikipedia

    en.wikipedia.org/wiki/Shear_strength_(soil)

    A more advanced understanding of the behaviour of soil undergoing shearing led to the development of the critical state theory of soil mechanics (Roscoe, Schofield & Wroth 1958). In critical state soil mechanics, a distinct shear strength is identified where the soil undergoing shear does so at a constant volume, also called the 'critical state'.

  4. Soil mechanics - Wikipedia

    en.wikipedia.org/wiki/Soil_mechanics

    The steady-state was formally defined [27] by Steve J. Poulos Archived 2020-10-17 at the Wayback Machine an associate professor at the Soil Mechanics Department of Harvard University, who built off a hypothesis that Arthur Casagrande was formulating towards the end of his career. The steady state condition is not the same as the "critical state ...

  5. Andrew N. Schofield - Wikipedia

    en.wikipedia.org/wiki/Andrew_N._Schofield

    Critical state soil mechanics, Cam Clay, Geotechnical centrifuge modelling: Spouse: Margaret Green (m.1961) Awards: US Army Distinguished Civilian Service Award, 1979 20th Rankine Lecture, 1980 Fellow [1] of the Royal Academy of Engineering, [2] 1986 Fellow of the Royal Society, 1992 James Alfred Ewing Gold Medal from the Institution of Civil ...

  6. Geotechnical engineering - Wikipedia

    en.wikipedia.org/wiki/Geotechnical_engineering

    Roscoe, Schofield, and Wroth, with the publication of On the Yielding of Soils in 1958, established the interrelationships between the volume change behavior (dilation, contraction, and consolidation) and shearing behavior with the theory of plasticity using critical state soil mechanics. Critical state soil mechanics is the basis for many ...

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  8. Cohesion (geology) - Wikipedia

    en.wikipedia.org/wiki/Cohesion_(geology)

    When we remould soft soil in a classification test, its strength is [(suction) x (friction)], it remains ductile plastic material with constant "apparent cohesion" while it flows at constant volume, because it is at a constant effective stress, and critical state friction is constant. Critical state soil mechanics analyses the bearing capacity ...

  9. Prisoners of Profit - The Huffington Post

    projects.huffingtonpost.com/prisoners-of-profit?...

    Over the past quarter century, Slattery’s for-profit prison enterprises have run afoul of the Justice Department and authorities in New York, Florida, Maryland, Nevada and Texas for alleged offenses ranging from condoning abuse of inmates to plying politicians with undisclosed gifts while seeking to secure state contracts.