Cohesion is the ability of like particles within soil to hold onto each other. It is the shear strength or force that binds together like particles in the structure of a soil. And is denoted by C. Cohesion is usually measured using the Kilopascal for Pressure. Note that the value of Cohesion is always positive. Typically, the value of Cohesion lies in the range from 0 to 50.