1993 Volume 30 Pages 251-256
No prediction of the rate of resuspended load on mud has ever sufficiently focused on the characteristics that sediment material is small and cohesive. This paper will attempt to introduce this nonincluded factor in the prediction of critical tractive force of mud. The critical tractive force which may be termed as the so-called “theory of electrochemical anchoring force”, is calculated from the condition under which cohesive force obtained from the sum of the van der Waals' attraction between two mud particles, and the force caused by the surface charge of particles. In a region less than tens gm of particle diameter, or lager than 2 of relative water content (W/WL, WL means the liquid limit of water content), the critical tractive force decreases almost exponentially in the value of noncohesive critical shear stress as the water content increases.