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Civil - Soil Mechanics -Soil Water And Water Flow

Capillarity pressure

   Posted On :  11.07.2016 08:06 am

The magnitude of the pressure is the same at all height above the free water surface. The capillarity pressure transferred from grain to grain called as inter angular or effective pressure.

Capillarity pressure

 

The magnitude of the pressure is the same at all height above the free water surface. The capillarity pressure transferred from grain to grain called as inter angular or effective pressure.

 

1 Capillary action (or) capillarity:

 

It is the phenomenon of movement of water in the interstices of a soil due to capillary forces. The capillary forces depend upon various factors depend upon various factors such as surface tension of water, pressure in water in relation to atmospheric pressure and thee size and conformation of soil pores.

2 Contact moisture.

 

Water can also be held by surface tension round the point of contact of two particles (spheres) capillary water in this form is known as contact moisture (or) contact capillary water.

 

 

Capillary water

 

The minute pores of soil serve as capillary tubes through which the moisture rise above the ground water table.

 

Capillary water is the soil moisture located within the interstices and voids of capillary size of the soil.

 

Capillary water is held in the interstices of soil due to capillary forces. Capillary action or capillarity is the phenomenon of movement of water in the interstices of a soil due to capillary forces.

 

The capillary forces depend upon various factors such as surface tension of water, pressure in water in relation to atmospheric pressure, and the size and conformation of soil pores.



Tags : Civil - Soil Mechanics -Soil Water And Water Flow
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