Question

What is cohesion why it develops in soil?

Answer 1

cohesion of soils understand cohesion, in which the pores are not filled with water. Values of effective cohesion grows with decreasing grain.

hope it helps

Answer 2

Answer:

In soils, true cohesion is caused by following:

• Electrostatic forces in stiff overconsolidated clays (which may be lost through weathering)

• Cementing by Fe2O3, CaCO3, NaCl, etc.

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)