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  2. Atterberg limits - Wikipedia

    en.wikipedia.org/wiki/Atterberg_limits

    The plasticity index is the size of the range of water contents where the soil exhibits plastic properties. The PI is the difference between the liquid and plastic limits (PI = LL-PL). Soils with a high PI tend to be clay, those with a lower PI tend to be silt, and those with a PI of 0 (non-plastic) tend to have little or no silt or clay.

  3. Soil mechanics - Wikipedia

    en.wikipedia.org/wiki/Soil_mechanics

    The Plasticity Index of a particular soil specimen is defined as the difference between the Liquid Limit and the Plastic Limit of the specimen; it is an indicator of how much water the soil particles in the specimen can absorb, and correlates with many engineering properties like permeability, compressibility, shear strength and others ...

  4. Plastic limit theorems - Wikipedia

    en.wikipedia.org/wiki/Plastic_limit_theorems

    The two plastic limit theorems apply to any elastic-perfectly plastic body or assemblage of bodies. Lower limit theorem: If an equilibrium distribution of stress can be found which balances the applied load and nowhere violates the yield criterion, the body (or bodies) will not fail, or will be just at the point of failure.

  5. Drucker–Prager yield criterion - Wikipedia

    en.wikipedia.org/wiki/Drucker–Prager_yield...

    Figure 1: View of Drucker–Prager yield surface in 3D space of principal stresses for =, =. The Drucker–Prager yield criterion [1] is a pressure-dependent model for determining whether a material has failed or undergone plastic yielding.

  6. Cohesion (geology) - Wikipedia

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

    There can also be apparent cohesion. This is caused by: Negative capillary pressure (which is lost upon wetting) Pore pressure response during undrained loading (which is lost through time) Root cohesion (which may be lost through logging or fire of the contributing plants, or through solution)

  7. The World May Be Negative Sometimes, So Here Are 34 ... - AOL

    www.aol.com/internet-negative-sometimes-34...

    The great French playwright Pierre-Augustin Beaumarchais once wrote: "I hasten to laugh at everything. Otherwise, I would have to cry." Damn right - when everything around is full of negativity ...

  8. Plasticity (physics) - Wikipedia

    en.wikipedia.org/wiki/Plasticity_(physics)

    Plasticity in a crystal of pure metal is primarily caused by two modes of deformation in the crystal lattice: slip and twinning. Slip is a shear deformation which moves the atoms through many interatomic distances relative to their initial positions.

  9. Is It Just Stress...Or Perimenopause? Doctors Explain ... - AOL

    www.aol.com/just-stress-perimenopause-doctors...

    “People have gone to get testing with neurology and when the workups are negative they find out that maybe this is because of the hormonal fluctuations that are seen with perimenopause,” she says.