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internal pressure
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internal pressure

Also known as: neutral stress, pore pressure

Learn about this topic in these articles:

rocks

  • rock size
    In rock: Rock mechanics

    …and internal (pore), due to pressure exerted by pore fluids contained in void space in the rock. Directed applied stress, such as compression, tension, and shear, is studied, as are the effects of increased temperature introduced with depth in the Earth’s crust. The effects of the duration of time and…

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  • rock size
    In rock: Effect of environmental conditions

    (2) Internal pore-fluid pressure reduces the effective stress acting on the sample, thus reducing the strength and ductility. The effective, or net, confining pressure is the external hydrostatic pressure minus the internal pore-fluid pressure. (3) Temperature lowers the strength, enhances ductility, and may enhance recrystallization. (4)…

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